Structure and Features - IKO International · Table 2 Accuracy of inner and outer rings of inch series BR and BRII d or D Nominal bearing bore dia. or outside dia. mm ∆ dmp Single

D

D1 D2

●Machined Type Caged Needle Roller Bearings

●Machined Type Guide Needle Roller Bearings

■ Structure and FeaturesIKO Machined Type Needle Roller Bearings are bear-ings with a low sectional height and large load ratings. The outer ring has high rigidity and can easily be used even for light alloy housings. These bearings are available in metric series and inch series, both of which have the caged type and the full complement type. It is therefore possible to select a suitable bear-ing for use under various conditions such as heavy loads and high-speed or low-speed rotations. In addi-tion, there are bearings with and without an inner ring. As the type without inner ring uses a shaft as the raceway surface, a compact design is possible.

Structures of Machined Type Needle Roller Bearings

Outer ring

Cage

Needle roller

Outer ring

Cage

Needle roller

Inner ring

Outer ring

Needle roller

Seal

Cage

Outer ring

Mallet-shaped roller

Stop ring

NA49

GTR

RNA49…UU

RNA49

D

D3 D41N=0.102kgf=0.2248lbs.1mm=0.03937inch

■ TypesMachined Type Needle Roller Bearings are available in various types shown in Table 1.

Caged Needle Roller Bearings

This type of bearing combines a collared outer ring with the IKO's unique lightweight rigid cage and nee-dle rollers. During operation, needle rollers are guid-ed precisely by the cage, and an ideal load distribu-tion is obtained.The metric series consists of the NA48 and NA49 series of ISO Standard, NA69 and TAFI series which are based on the international dimension series, and the heavy duty TRI series which is widely used in Japan. The TAFI series has a sectional height as low as that of the shell type and is used for light loads.The inch series or BRI series is based on the specifi-cations of ANSI Standard of USA.

Caged Needle Roller Bearings without Inner Ring As shown in the section "Design of shaft and housing" on page A44, any desired radial clearance can be selected by assembling this type of bearing with a shaft which is heat-treated and finished by grinding.These bearings are free from the effects on dimen-sional accuracy caused by assembling an inner ring,

so that the rotational accuracy is improved. Also, the shaft rigidity can be improved as the shaft diameter can be increased by an amount corresponding to the inner ring thickness.

Caged Needle Roller Bearings with Inner RingThis type of bearing is used when the shaft cannot be heat-treated and finished by grinding. The outer and inner rings are separable and a small relief clearance is provided on both sides of the inner ring raceway to facilitate bearing mounting. In the TRI and BRI series, the width of the inner ring is larger than that of the outer ring.Due to heat expansion during operation or mounting errors, the inner or outer ring may be shifted axially and the whole length of the rollers may not be in con-tact with the raceway. Therefore, attention should be

paid to the allowable axial shift S as shown in the table of dimensions.

Needle Roller Bearings with SealThese bearings are sealed types of the NA49, NA69 and BRI series bearings, in which a seal is installed on one side (type with one seal) or both sides (type with two seals) of the bearing. The seal is made of special synthetic rubber and effectively prevents dust penetration and grease leakage.

Guide Needle Roller Bearings

These bearings are full complement type bearings and use mallet-shaped rollers which are guided accu-rately by the guide rail located at the center of the outer ring raceway and the guide groove of the mallet-shaped roller. This minimizes skewing (tilting of the roller from its rotating axis), which is normally a weak point of full complement bearings, and improves the rotational accuracy. This type of bearing is especially suitable for heavy loads, shock loads and oscillating motions.Bearings with and without inner rings are available. In bearings with an inner ring, the width of the inner ring is larger than that of the outer ring.

Table 1.1 Type of bearing (Standard type)Type

Series

Inch series

Dimension series 49

Dimension series 69

Dimension series 48

For heavy duty

For light duty

RNA 49

RNA 69

RNA 48

TR

TAF

BR

NA 49

NA 69

NA 48

TRI

TAFI

BRI

GTR

− −

GTRI



Without inner ring With inner ring Without inner ring With inner ring

Met

ric s

erie

s■ Identification Number

Model codeSupplemental

codeClassification

symbolDimensions

NA 49 UU

Type of bearing

05 C2 P6

Examples of identification number

Example 1 Example 2

Bore diameter number

Seal symbol (With seals on both sides)

Dimension series

Clearance symbol (C2 clearance)

Accuracy class (Class 6)

Model code Dimensions

BRI 24 16

Type of bearing

37

Bearing bore diameter（24×1／16＝11／2 inches）

Outer ring width（16×1／16＝1 inch）

Bearing outside diameter（37×1／16＝25／16 inches）

■ Accuracy

Table 2 Accuracy of inner and outer rings of inch series BR and BRII

d or D Nominal bearing bore dia.

or outside dia. mm

∆dmpSingle plane mean

bore diameter deviation

∆DmpSingle plane mean outside diameter

deviation

∆Bs（∆Cs）Deviation of a single inner (or outer) ring

width

KiaRadial runout of

assembled bearing inner ring

KeaRadial runout of

assembled bearing outer ring

− 19.05030.16250.80082.550

120.650

19.050 30.16250.80082.550

120.650 184.150

00000−

− 10 − 13 − 13 − 15− 20

−

− − 13 − 13 − 15 − 20 − 25

− 130 − 130 − 130 − 130 − 130 − 130

− 00000

000000

101315202530

−1520253545

unit: μ m

Over Incl. High Low Low LowHigh High Max. Max.

Remark　d for ∆dmp, ∆Bs, ∆Cs and Kia, and D for ∆Dmp and Kea

Table 1.2 Type of bearing (With seal)Type

Series

Inch series

Dimension series 49

Two side seals

One side seal

Two side seals

One side seal

Two side seals

One side seal

Dimension series 69

RNA 49…UU

RNA 49…U

RNA 69…UU

RNA 69…U

BR　　…UU

−

NA 49…UU

NA 49…U

NA 69…UU

NA 69…U

BRI　…UU

−

−

− −− −

−



Without inner ring With inner ring Without inner ring With inner ring

Met

ric s

erie

s

The identification number of Machined Type Needle Roller Bearings consists of a model code, dimen-sions, any supplemental codes and a classification symbol. Examples are shown below.

Machined Type Needle Roller Bearings are manufac-tured based on JIS (See page A31.). The tolerances for the smallest single roller set bore diameter of bear-ings without inner ring are based on Table 14 on page A33. For BR and BRI series, the accuracy is based on Table 2 and the tolerances for the smallest single roller set bore diameter are based on Table 3.

D


■ ClearanceRadial internal clearances of Machined Type Needle Roller Bearings are made to the CN clearance shown in Table 18 on page A37. Radial internal clearances of BRI series are based on Table 4.

■ LubricationBearings with prepacked grease are shown in Table 5. ALVANIA GREASE S2 (Shell Lubricants Japan K.K.) is prepacked as the lubricating grease.In the case of bearings without prepacked grease, perform proper lubrication. Operating them without lubrication will increase the wear of the rolling contact surfaces and shorten their lives.

■ FitThe recommended fits for Machined Type Needle Roller Bearings are shown in Tables 22 to 24 on pages A41 and A42.

Table 3 Tolerances for smallest single roller setbore diameter Fws min of inch series BR

Fw Nominal roller set bore diameter

mm

∆Fws minDeviation of smallest single roller

set bore diameter

− 18.03430.22641.91050.03870.10480.010

18.03430.22641.91050.03870.10480.010

102.108

unit: μ m

Over Incl.

＋ 43＋ 46＋ 48＋ 51＋ 53＋ 58＋ 61

＋ 20＋ 23＋ 25＋ 25＋ 28＋ 28＋ 31

High Low

Table 4 Radial internal clearance of inch series BRI

FwNominal roller set bore diameter

mmRadial internal clearance

− 18.03425.90830.22635.05241.91050.03870.10480.010

100.076

18.03425.90830.22635.05241.91050.03870.10480.010

100.076 102.108

unit: μ m

Over Incl.

33414648505056566368

66768286899299

104 117 127

Min. Max.

■ Oil HoleTable 6.1 shows the number of oil holes of the outer ring and Table 6.2 shows the number of oil holes of the inner ring.When an outer ring with an oil hole is especially required for the type without an oil hole, add "−OH" before the clearance symbol in the identification num-ber. When an outer ring with an oil hole and an oil groove is required for the type without an oil hole, attach "−OG" before the clearance symbol. Example: TAFI 203216− OH C2 P6When an outer ring with multiple oil holes or an inner ring with an oil hole(s) is required, please consult IKO.

■ MountingMounting dimensions for Machined Type Needle Roller Bearings are shown in the table of dimensions.

■ Matched Set BearingsWhen using two or more Machined Type Needle Roller Bearings adjacent to each other on the same shaft, it is necessary to obtain an even load distribu-tion. On request, a set of bearings is available, in which bearings are matched to obtain an even load distribution.

Table 6.2 Number of oil holes of the inner ring

Bearing type

Metric series

Inch series

Metric series



NATRI TAFI

GTRI

With a seal on one sideWith seals on both sidesStandard type

Number of oil holes of the inner ring

00−−−−

00−11−

000120

BRI

Nominal bearing bore diameter d mm

d≦ 76.20076.200＜ d

Remark　The type with an oil hole(s) is provided with an oil groove.

Table 6.1 Number of oil holes of the outer ring

Bearing type

Metric series

Inch series

Metric series



RNA，NATR，TRI

GTR，GTRI

With a seal on one sideWith seals on both sidesStandard type

Number of oil holes of the outer ring

1−−−−−−

1−−−11−

1101121

TAF，TAFI

BR，BRI

Nominal roller set bore diameter Fw mm

　　　 Fw ≦ 26 26 ＜ Fw

Fw ≦ 69.85069.850 ＜ Fw

Remark　The type with an oil hole(s) is provided with an oil groove.

Table 5 Bearings with prepacked grease

Bearing type

Metric series

Inch seriesMetric series

Caged Needle Roller

Bearings


RNA, NATR, TRI TAF, TAFI, TAF/SGBR, BRI

GTR, GTRI

With a seal on one side

With seals on both sides

Standard type

×−−−

−

〇−−〇

−

××××

×

〇：With prepacked grease　×：Without prepacked grease

■ Extended Life Specification Machined Type Needle Roller Bearings

With inner ring Without inner ring

d=10 〜 75mm Fw=14 ～ 85mm

NA 4900 〜 4915 RNA 4900 〜 4915

NA 6901 〜 6915 RNA 6901 〜 6915

TAFI 102216 〜 7510535 TAF 142216 〜 8510535

TRI 153320 〜 7510845 TR 203320 〜 8310845

d Fw

Table 7 Applicable Production Size

Standard heat-treated products Extended life specification products

Model number : NA4904

Load : 10,500 N

Lubrication : Cleaning oil lubricated

Cum

ulat

ive

dam

age

rate

%

Life h

Fig. 1 Life Test ResultRemark　 This table shows the result of life testing under

load conditions at 50% of the basic dynamic rating.The Extended Life Specification with special heat treatment lasted 5 times longer or more in L10 life compared to the standard heat-treated products.

Extended Life Specification Machined Type Needle Roller Bearings are treated with a newly developed special heat treatment that enhances the bearing's surface hardness and toughness, and suppresses the generation and growth of damage on the surface. Significant life extension can be achieved under high load or under the condition of lubrication contaminated with foreign substances.In a life comparison test, as shown in Figure 1, IKO's special heat treated Extended Life Specification products lasted 5 times longer than standard heat-treated products.Extended Life Specification Machined Type Needle Roller Bearings, available according to the "Applicable Production Size" shown in Table 7, are made to order upon request.

D


D

Shaft dia. 5− 15mm

MACHINED TYPE NEEDLE ROLLER BEARINGS

Without Inner Ring

80 00080 00080 000

555

101011

101210

0.20.20.15

2 4203 0802 420

1 9502 6601 950

8.48.49.8

60 00060 00060 000

777

131414

101012

0.150.20.2

2 9603 6004 610

2 6902 9604 050

11.812.412.4

50 00050 00050 000

888

151515

101216

0.150.20.2

3 9605 0607 080

3 4204 6907 220

13.813.413.4

45 00045 00045 000

999

161617

121610

0.20.20.15

5 4907 6804 530

5 3308 2103 650

14.414.415.8

40 00040 00040 000

101010

171719

121611

0.20.20.2

5 8808 2306 180

5 9709 1905 030

15.415.417.4

35 00035 00035 000

121212

191920

121611

0.30.30.3

6 6109 2506 600

7 26011 2006 310

171718

70 00070 000

66

1212

1012

0.150.2

2 7003 440

2 3203 170

10.810.4

30 00030 000

1515

2323

1620

0.30.3

12 30015 600

14 90020 200

2121

30 00030 00030 000

141414

222222

131620

0.30.30.3

9 23011 70014 800

10 10013 70018 600

202020

Shaft dia.

mm

Identification number Mass (Ref.)

g

RNA 49 RNA 69 RNA 48 TAF TR GTR

Boundary dimensions　mm Allowable rotational speed(2)

min-1Fw D C rs min

(1)

RNA49 TAFRNA69（Fw ≦ 35）

Standard mounting dimension

DaMax.mm

Basic dynamic load rating

C

N

Basic static load rating

C0

N

──

RNA 493

───

───

TAF 51010TAF 51012

─

───

───

5 3.4 4.2 4.6

RNA 495──

───

───

─TAF 71410TAF 71412

───

───

7 5.9 6.9 8.3

RNA 496──

───

───

─TAF 81512TAF 81516

───

───

8 7.4 9.112.9

──

RNA 497

───

───

TAF 91612TAF 91616

─

───

───

9 9.813.2 9.3

──

RNA 498

───

───

TAF 101712TAF 101716

─

───

───

1010.714.312.6

──

RNA 499

───

───

TAF 121912TAF 121916

─

───

───

1212.216.313.6

──

──

RNA 494─

─TAF 61212

──

──6 5.3

6.4

──

──

──

TAF 152316TAF 152320

──

──15 22.5

28

RNA 4900──

───

───

─TAF 142216TAF 142220

───

───

1416.52126.5

Notes(1)　　Minimum allowable value of chamfer dimension r 　　 (2)　　Allowable rotational speed applies to oil lubrication. For grease lubrication, a maximum of 60% of this value is allowable.Remarks1.　 TAF series with a roller set bore diameter Fw of 26 mm or less have no oil hole. In others, the outer ring has an oil groove and an

oil hole. 2.　 No grease is prepacked. Perform proper lubrication.

D Fw

C

r

r

Da

D


D



Without Inner Ring

25 00025 00025 00025 000

16161616

24242424

13162022

0.30.30.30.3

22222222

20 00020 00020 00020 000

20202020

28282828

13162023

0.30.30.30.3

26262626

18 00018 00018 00018 000

22222222

30303030

13162023

0.30.30.30.3

28282828

25 00025 000

1717

2525

1620

0.30.3

2323

20 0007 500

2020

3333

2020

0.30.3

3131

19 00019 000

2121

2929

1620

0.30.3

2727

18 0007 000

2222

3434

2525

0.30.3

3232

20 00020 000

1919

2727

1620

0.30.3

2525

20 00020 00020 000

181818

262626

131620

0.30.30.3

242424

Boundary dimensions　mm

Fw D C rs min(1)

GTR

Shaft dia.

mm


g


16

RNA 4901───

───

RNA 6901

────

─TAF 162416TAF 162420

─

────

────

18.1232930

──

──

──

TAF 172516TAF 172520

──

──17 24.5

30.5

RNA 49/14──

───

───

─TAF 182616TAF 182620

───

───

1819.925.532

──

──

──

TAF 192716TAF 192720

──

──19 27

34

20

RNA 4902───

───

RNA 6902

────

─TAF 202816TAF 202820

─

────

────

21.527.535.537

──

──

──

──

TR 203320─

─GTR 203320

──

──

──

TAF 212916TAF 212920

──

──21 29

36

22

RNA 4903───

───

RNA 6903

────

─TAF 223016TAF 223020

─

────

────

23.53037.540.5

──

──

──

──

TR 223425─

─GTR 223425

73.587

RNA49 TAF TRRNA69（Fw ≦ 35）

59.569



9 66012 30015 50017 100

11 10015 10020 40023 000

10 60013 40017 000

12 80017 50023 600

14 00017 700

18 70025 300

10 90013 90017 60019 300

13 80018 80025 40028 800

24 30029 200

26 50037 200

14 40018 200

20 00027 100

12 90016 300

16 30022 000

29 10037 900

36 80057 800

11 70014 90018 90020 800

15 60021 20028 70032 500

Allowable rotational speed(2)

min-1


DaMax.mm


C

N


C0

N

D Fw

C

r

r

DaD Fw

C

r

r

D


D



Without Inner Ring

15 00015 000

14 00014 000

13 0005 000

17 00017 000

2626

2929

3030

2424

3434

3838

4444

3232

1620

2030

2525

1620

0.30.3

0.30.3

0.30.3

0.30.3

3232

3636

4242

3030

16 00016 00016 00016 000

25252525

33333737

16201730

0.30.30.30.3

31313535

14 00014 00014 00014 000

28282828

37373939

20301730

0.30.30.30.3

35353737

13 00013 00013 00013 000

30303030

40404242

20301730

0.30.30.30.3

38384040

16 00016 0006 0006 000

25252525

38383838

20252025

0.30.30.30.3

36363636


Fw D C rs min(1)

Shaft dia.

mm


g


25

──

RNA 4904─

───

RNA 6904

────

TAF 253316TAF 253320

──

────

────

────

────

────

────

TR 253820TR 253825──

──

GTR 253820GTR 253825

28

──

RNA 49/22─

───

RNA 69/22

────

TAF 283720TAF 283730

──

────

────

30

──

RNA 4905─

───

RNA 6905

────

TAF 304020TAF 304030

──

────

────

──

──

──

TAF 243216TAF 243220

──

──24

33.5 42 55.5 95.5

71 89 81.5104

51.5 83.5 56.5 97.5

64.5 97.5 64111

32 40.5

──

──

──

TAF 263416TAF 263420

──

──26 34.5

43.5

──

──

──

TAF 293820TAF 293830

──

──29 57

85

──

──

──

──

TR 304425─

─GTR 304425

115133

GTRRNA49 TAF TRRNA69（Fw ≦ 35）



15 30019 400

22 50030 500

28 90034 80033 30042 400

35 00044 40046 50063 700

16 30020 600

24 90033 800

21 70031 10021 40036 300

37 10058 90028 90056 900

21 60030 900

37 20059 100

25 10036 00023 70042 100

40 10063 90030 70064 300

15 80020 00021 00035 400

23 70032 10025 00048 900

37 90047 000

52 10076 500


DaMax.mm


C

N


C0

N


min-1

D Fw

C

r

r

DaD Fw

C

r

r

D


D



Without Inner Ring

12 00012 00012 00012 000

32323232

42424545

20301730

0.30.30.30.3

25 70036 80024 50041 800

42 20067 20032 70064 800

40404343

11 00011 00011 00011 000

35353535

45454747

20301730

0.30.30.30.3

26 90038 60025 20043 000

46 20073 60034 70069 000

43434545

10 00010 00010 00010 000

40404040

50505252

20302036

0.30.30.60.6

29 40042 30031 20053 500

54 10086 20047 80095 700

48484848

4 50032 45 30 0.3 58 000 101 00043

11 0004 500

3535

4848

3030

0.30.3

47 40061 100

72 300110 000

4646

11 00011 000

3737

4747

2030

0.30.3

28 20040 500

50 10079 800

4545

11 00011 000

3838

4848

2030

0.30.3

28 10040 300

50 20080 000

4646

11 0004 000

3838

5252

3030

0.60.6

50 80064 200

81 100121 000

4848

10 0003 500

4040

5555

2020

0.60.6

37 40044 300

55 70073 600

5151


Fw D C rs min(1)

Shaft dia.

mm


g


32

──

RNA 49/28─

───

RNA 69/28

────

TAF 324220TAF 324230

──

────

────

68102 76.5133

35

──

RNA 4906─

───

RNA 6906

────

TAF 354520TAF 354530

──

────

────

73.5112 72.5125

40

──

RNA 49/32─

───

RNA 69/32

────

TAF 405020TAF 405030

──

────

────

83125 96172

─ ─ ─ ─ ─ GTR 324530 152

──

──

──

──

TR 354830─

─GTR 354830

139163

──

──

──

TAF 374720TAF 374730

──

──37 77.5

117

──

──

──

TAF 384820TAF 384830

──

──

38

79119

──

──

──

──

TR 385230─

─GTR 385230

168195

──

──

──

──

TR 405520─

─GTR 405520

129144

GTRRNA49 TAF TRRNA69（Fw ≦ 35）

RNA69

Notes(1)　　Minimum allowable value of chamfer dimension r 　　 (2)　　Allowable rotational speed applies to oil lubrication. For grease lubrication, a maximum of 60% of this value is allowable.Remarks1.　The outer ring has an oil groove and an oil hole. 2.　 No grease is prepacked. Perform proper lubrication.


min-1


DaMax.mm


C

N


C0

N

D F w

C

r

r

D Fw

C

r

r

DaD Fw

C

r

r

D


D



Without Inner Ring

9 5009 5009 5009 500

42424242

52525555

20302036

0.30.30.60.6

50505151

9 5003 500

4242

5656

3030

0.60.6

5252

8 5008 5008 5003 000

48484848

62626262

22304030

0.60.60.60.6

58585858

9 0003 500

4545

5959

3030

0.60.6

5555

8 5008 500

4747

5757

2030

0.30.3

5555

8 0008 000

5050

6262

2535

0.30.3

6060

9 0009 0009 000

454545

555558

203020

0.30.30.6

535354

8 0008 0003 000

505050

646564

302230

0.60.60.6

606160


Fw D C rs min(1)

Shaft dia.

mm


g


42

──

RNA 4907─

───

RNA 6907

────

TAF 425220TAF 425230

──

────

────

86.5130113200

48RNA 4908───

──

RNA 6908─

────

────

─TR 486230──

───

GTR 486230

──

──

──

──

TR 425630─

─GTR 425630

183210

──

──

──

TAF 435320TAF 435330

──

──43 88.5

133

──

──

──

TAF 506225TAF 506235

──

──

50

159225

─RNA 49/42─

───

───

───

TR 506430──

──

GTR 506430

210174245

──

──

──

──

TR 455930─

─GTR 455930

193225

──

RNA 49/38

───

───

TAF 455520TAF 455530

─

───

───45

92138120

──

──

──

TAF 475720TAF 475730

──

──47 95

144

152205275240

9 5009 500

4343

5353

2030

0.30.3

5151

GTRRNA49 TAF TR RNA69

Notes(1)　　Minimum allowable value of chamfer dimension r 　　 (2)　　Allowable rotational speed applies to oil lubrication. For grease lubrication, a maximum of 60% of this value is allowable.Remarks1.　 The outer ring has an oil groove and an oil hole. 2.　 No grease is prepacked. Perform proper lubrication.

29 90043 00032 00054 900

56 20089 40050 100

100 000

30 50043 800

58 20092 600

43 00058 000

85 300125 000

53 80067 500

90 100133 000

31 00044 60033 600

60 20095 80054 600

55 10070 300

94 800142 000

31 50045 200

62 20099 100

41 60056 30071 30072 700

67 40099 500

135 000154 000

57 70042 50074 600

104 00070 300

158 000


min-1


DaMax.mm


C

N


C0

N

D F w

C

r

r

D Fw

C

r

r

DaD Fw

C

r

r

D


D



Without Inner Ring

7 5007 5007 500

6 5006 5006 500

7 5007 500

555555

606060

5252

686870

727275

6868

253522

253522

2240

0.30.30.6

0.30.30.6

0.60.6

666666

707071

6464

7 0007 000

5858

7272

2240

0.60.6

6868

7 0002 500

5858

7777

4545

11

7272

6 5002 500

6262

8181

3838

11

7676

6 5006 500

6363

8080

2545

11

7575

6 0006 0006 000

656565

787882

253525

0.60.61

747477

6 0006 0006 0006 000

68686868

82828585

25352545

0.60.611

78788080


Fw D C rs min(1)

Shaft dia.

mm


g


─RNA 6909

──

RNA 4909　─

──

──

──52 197

355

─RNA 6910

──

RNA 4910─

──

──

──

58

179320

──

──

──

──

TR 628138─

─GTR 62813862 460

520

─RNA 6911

──

RNA 4911─

──

──

──63 265

475

──

──

──

──

TR 587745─

─GTR 587745

515590

──

RNA 49/48

───

───

TAF 556825TAF 556835

─

───

───

55193255188

──

RNA 49/52

───

───

TAF 607225TAF 607235

─

───

───

60187260205

──

RNA 49/58

───

───

TAF 657825TAF 657835

─

───

───

65225315275

68

──

RNA 4912─

───

RNA 6912

────

TAF 688225TAF 688235

──

────

────

250350285510

RNA49 TAF TR RNA69

Notes(1)　　Minimum allowable value of chamfer dimension r 　　 (2)　　Allowable rotational speed applies to oil lubrication. For grease lubrication, a maximum of 60% of this value is allowable.Remarks1.　 The outer ring has an oil groove and an oil hole. 2.　No grease is prepacked. Perform proper lubrication.

GTR

43 50074 600

73 300147 000

46 20079 200

82 100164 000

49 60067 00058 900

112 000164 000101 000

45 40061 20044 300

94 000138 00076 300

104 000135 000

191 000280 000

47 50064 10047 100

103 000151 00085 100

92 000118 000

166 000241 000

57 60098 700

97 200194 000

54 80072 00060 200

103 000

117 000166 000105 000211 000


min-1


DaMax.mm


C

N


C0

N

D F w

C

r

r

D Fw

C

r

r

DaD Fw

C

r

r

D


D



Without Inner Ring

Shaft dia.

mm


g


──

──

──

──

TR 708945─

─GTR 708945

─RNA 6913

──

RNA 4913─

──

──

──72

──

──

──

TAF 739025TAF 739035

──

──73

──

RNA 49/62

───

───

TAF 708525TAF 708535

─

───

───70

605690

325585

335475

280395320

──

RNA 49/68

───

───

TAF 759225TAF 759235

─

───

───

75345485470

──

──

──

──

TR 8310845─

─GTR 831084583 995

1 090

80

──

RNA 4914─

───

RNA 6914

────

TAF 809525TAF 809535

──

────

────

315445495910

85

─RNA 4915──

───

RNA 6915

────

TAF 8510525─

TAF 8510535─

────

────

435525610960


55 50073 00061 500

120 000171 000109 000

62 700108 000

113 000227 000

76 30086 200

102 000138 000

145 000169 000210 000331 000

114 000147 000

228 000336 000

61 10080 400

127 000181 000

62 10081 70079 900

131 000186 000147 000

59 40078 10083 200

134 000

137 000195 000158 000311 000

146 000190 000

270 000396 000

5 5002 000

5 5005 500

5 5005 500

5 0005 0005 0005 000

4 5004 5004 5004 500

5 5005 5005 500

7070

7373

7272

80808080

85858585

707070

8989

9090

9090

9595

100100

105105105105

858588

4545

2535

2545

25353054

25303554

253525

11

11

11

1111

1111

0.60.61

8484

8585

8585

90909595

100100100100

818183

5 5005 5005 500

757575

929295

253530

111

878790

5 0001 800

8383

108108

4545

11

103103


Fw D C rs min(1)



min-1


DaMax.mm


C

N


C0

N

D F w

C

r

r

D Fw

C

r

r

DaD Fw

C

r

r

D


D



Without Inner Ring

Shaft dia.

mm


g


─RNA 49/82─

───

───

TAF 9511526─

TAF 9511536

───

───95

90

─RNA 4916──

───

RNA 6916

────

TAF 9011025─

TAF 9011035─

────

────

495575690

455550640

1 010

105

─RNA 4918──

───

RNA 6918

────

TAF 10512526─

TAF 10512536─

────

────

545740760

1 360

─RNA 4917──

───

RNA 6917

────

TAF 10012026─

TAF 10012036─

────

────

525705725

1 300

──

──

──

──

TR 9311850─

─GTR 931185093 1 210

1 340

──

──

──

──

TR 10012550─

─GTR 10012550

100

1 2901 440

──

──

──

──

TR 9512045─

─GTR 9512045

1 1201 230



77 30087 300

103 000143 000

150 000175 000217 000351 000

79 70090 000

106 000

159 000186 000231 000

155 000204 000

305 000455 000

82 400110 000110 000173 000

168 000244 000244 000467 000

165 000224 000

329 000509 000

172 000234 000

355 000549 000


Fw D C rs min(1)

90909090

9393

110110110110

118118

25303554

5050

1111

11

105105105105

113113

4 5004 5004 5004 500

4 5001 600

959595

115115115

263036

111

110110110

4 0004 0004 000

9595

120120

4545

1.51.5

112112

4 0001 600

100100100100

120120120120

26353663

11.111.1

115113.5115113.5

4 0004 0004 0004 000

100100

105105105105

125125

125125125125

5050

26353663

1.51.5

11.111.1

117117

120118.5120118.5

4 0001 500

4 0004 0004 0004 000

178 000258 000258 000490 000

84 700113 000113 000178 000


min-1


DaMax.mm


C

N


C0

N

D F w

C

r

r

D Fw

C

r

r

DaD Fw

C

r

r

D


D

106 000116 000134 000182 000

240 000271 000324 000514 000

145 000233 000315 000

329 000414 000614 000

93 200 239 000

152 000 357 000

96 900 259 000

187 000 435 000

183 000245 000

395 000603 000

116 000 340 000

307 000409 000

625 000923 000


Fw D C rs min(1)

110110110110

110110

130130130130

135135

30354063

5050

11.111.1

1.51.5

125123.5125123.5

127127

3 5003 5003 5003 500

3 5001 400

115115115

140153153

405050

1.11.51.5

133.5145145

3 5003 5001 300

120 140 30 1 135 3 500

125 150 40 1.1 143.5 3 000

130 150 30 1 145 3 000

135

140140

145

150150150

155

160

165

170

165

178178

165

180188188

175

190

190

210

45

6060

35

506060

35

50

40

60

1.1

1.51.5

1.1

1.51.51.5

1.1

1.5

1.1

2

158.5

170170

158.5

172180180

168.5

182

183.5

201

3 000

3 0001 100

3 000

2 5002 5001 000

540 000675 000989 000

215 000320 000423 000

363 000

580 000

446 000

712 000

120 000

224 000

168 000

324 000

2 500

2 500

2 500

2 500

GTRRNA49 RNA48TAF TR

RNA69


min-1


DaMax.mm


C

N


C0

N


Without Inner Ring


Shaft dia.

mm


g


110

115

120

125

130

135

140

145

150

155

160

165

170

─RNA 4919────

RNA 4920───

RNA 4922─

RNA 4924───

RNA 4926───

RNA 4928─

RNA 4930

──────────

──

RNA 4826───

RNA 4828─

RNA 4830─

──

───────

───

TR 15018860─────

───

GTR 15018860

────

───

RNA 6919

─────────

─────────

─

─

RNA 4822

RNA 4824

TAF 11013030─

TAF 11013040──────────

────

TR 11013550──

TR 11515350─────

TR 14017860─

─────

GTR 11013550

──

GTR 11515350

─────

GTR 14017860

1 4001 560

1 1902 3502 600

790

1 280

850

1 930

3 3203 730

1 100

2 3603 5403 970

1 170

2 500

1 750

4 090

660770880

1 420


D F w

C

r

r

D Fw

C

r

r

DaD Fw

C

r

r

D


D

474 000

761 000

567 000

810 000

602 000

989 000

726 000

1 020 000

766 000

1 120 000

833 000

1 200 000

173 000

337 000

211 000

347 000

218 000

434 000

249 000

440 000

255 000

518 000

266 000

536 000

1 150 0001 320 000

345 000565 000

1 220 000

1 900 000

1 550 000

2 040 000

1 900 000

2 650 000

2 040 000

354 000

847 000

486 000

877 000

610 000

1 130 000

635 000


Fw D C rs min(1)

175

180

185

190

195

205

210

215

220

225

240

245

200

220

215

230

225

250

240

260

250

280

270

300

40

60

45

60

45

69

50

69

50

80

50

80

1.1

2

1.1

2

1.1

2

1.5

2

1.5

2.1

1.5

2.1

193.5

211

208.5

221

218.5

241

232

251

242

269

262

289

2 500

1 900

1 900

1 900

1 900

1 900

1 800

1 700

1 600

1 600

1 500

1 400

265265

300320

6080

22.1

291309

1 3001 300

285

290

305

310

330

340

350

320

360

350

380

380

420

400

60

100

69

100

80

118

80

2

2.1

2

2.1

2.1

3

2.1

311

349

341

369

369

407

389

1 100

1 100

950

950

900

850

750

RNA49 RNA48


DaMax.mm


min-1


C

N


C0

N


Without Inner Ring


Shaft dia.

mm


g


175

180

185

190

195

205

210

215

220

225

240

245

265

285

290

305

310

330

340

350

─RNA 4932

─RNA 4934

─RNA 4936

─RNA 4938

─RNA 4940

─RNA 4944

─RNA 4948

──

RNA 4848─

──

──

──

─RNA 4952

─RNA 4956

─RNA 4960

─

───────

RNA 4852

─RNA 4856

─RNA 4860

─RNA 4864

───────

───────

───────

────────────

RNA 4832

─RNA 4834

─RNA 4836

─RNA 4838

─RNA 4840

─RNA 4844

─

────────────

────────────

────────────

1 850

4 310

2 700

4 530

2 840

6 250

3 380

6 500

3 520

10 400

3 820

11 200

5 67012 000

6 070

21 200

9 750

22 500

13 200

33 400

14 100


D Fw

C

r

r

Da

D


D


Fw D C rs min(1)

360

370

380

390

400

415

430

450

470

490

440

420

460

440

480

480

520

540

560

600

118

80

118

80

118

100

140

140

140

160

3

2.1

3

2.1

3

2.1

4

4

4

4

427

409

447

429

467

469

504

524

544

584

750

700

700

650

600

600

500

500

500

400

RNA49 RNA48

2 830 000

2 140 000

3 020 000

2 320 000

3 200 000

2 860 000

4 030 000

4 270 000

4 510 000

5 140 000

1 170 000

651 000

1 220 000

680 000

1 260 000

951 000

1 540 000

1 590 000

1 640 000

1 910 000


DaMax.mm


C

N


C0

N


min-1


Without Inner Ring


Shaft dia.

mm


g


360

370

380

390

400

415

430

450

470

490

RNA 4964

─RNA 4968

─RNA 4972

─RNA 4976

RNA 4980

RNA 4984

RNA 4988

──────────

─RNA 4868

─RNA 4872

─RNA 4876

────

──────────

──────────

──────────

35 200

14 800

37 000

15 600

38 700

27 900

56 400

58 800

61 200

86 900


D Fw

C

r

r

Da

D


D


2 9605 0607 080

2 690 4 690 7 220

4 5305 8808 230

3 6505 9709 190

6 180 5 030

6 6109 2506 600

7 26011 2006 310

9 23011 70014 800

10 10013 70018 600

9 66012 30015 50017 100

11 10015 10020 40023 000

3 9605 4907 680

3 4205 3308 210

With Inner Ring

131515

101216

───

0.150.20.2

788

0.50.50.5

6.2 6.6 6.6

6.7 7.7 7.7

60 00050 00050 000

LRT 5710LRT 5812LRT 5816

11.813.413.4

151616

101216

───

0.150.20.2

899

0.50.50.5

7.2 7.6 7.6

7.7 8.7 8.7

50 00045 00045 000

LRT 6810LRT 6912LRT 6916

13.814.414.4

171717

101216

───

0.150.20.2

91010

0.50.50.5

8.2 8.6 8.6

8.7 9.7 9.7

45 00040 00040 000

LRT 7910LRT 71012LRT 71016

15.815.415.4

191920

121611

───

0.30.30.3

121212

0.50.50.5

111111

11.511.511.5

35 00035 00035 000

LRT 91212LRT 91216LRT 91211

171718

222222

131620

───

0.30.30.3

141414

0.50.50.5

121212

131313

30 00030 00030 000

LRT 101413LRT 101416LRT 101420

202020

19 11 ─ 0.2 10 0.5 9.6 9.9 40 000 LRT 8101117.4

24242424

13162022

────

0.30.30.30.3

16161616

0.50.50.50.5

14141414

15151515

25 00025 00025 00025 000

LRT 121613LRT 121616LRT 121620LRT 121622

22222222

Boundary dimensions　mm Standard mounting dimensions　mm

Assembled inner ring

D C B rs min Fw S Min. Max. Da

Max. (1) da(2)

Notes(1)　　Minimum allowable value of chamfer dimension r 　　 (2)　　Allowable axial shift amount of inner ring to outer ring 　　 (3)　　Allowable rotational speed applies to oil lubrication. For grease lubrication, a maximum of 60% of this value is allowable.Remarks1.　 TAFI series with a bore diameter d of 22 mm or less have no oil hole. In others, the outer ring has an oil groove and an oil hole. 2.　No grease is prepacked. Perform proper lubrication.

Shaft dia.

mm


g

NA 49 NA 69 NA 48 TAFI TRI GTRId

NA 495──

───

───

─TAFI 51512TAFI 51516

───

───

7.311.916.7

555

5

NA 496──

───

───

─TAFI 61612TAFI 61616

───

───

9.11317.5

666

　 NA49 TAFI　 NA69（d ≦ 30）

NA 497──

───

───

─TAFI 71712TAFI 71716

───

───

11.214.319.2

777

7

──

NA 499

───

───

TAFI 91912TAFI 91916

─

───

───

16.722.516.7

999

9

NA 4901───

───

NA 6901

────

─TAFI 122416TAFI 122420

─

────

────

26.533.542.544.5

12121212

12

NA 4900──

───

───

─TAFI 102216TAFI 102220

───

243038

101010

10

NA 498 ─ ─ ─ ─ ─ 15 88

6

───


C

N


C0

N


min-1


D F wd

C

r

r

r

r

S

Dada

D


D



43.5 54 39 67

17171717

104117

1717

52 67.5 87152

22222222

With Inner Ring

27272828

16201323

────

0.30.30.30.3

19192020

0.50.50.30.3

17171717

18181919

20 00020 00020 00020 000

LRT 151916LRT 151920LRT 152013LRT 152023

25252626

3333

2020

20.520.5

0.30.3

2020

0.3─

1717

1919

20 0007 500

LRT 152020LRTZ 152020

3131

3434

2525

25.525.5

0.30.3

2222

0.5─

1919

2121

18 0007 000

LRT 172225LRTZ 172225

3232

29293030

16201323

────

0.30.30.30.3

21212222

0.50.50.30.3

19191919

20202121

19 00019 00018 00018 000

LRT 172116LRT 172120LRT 172213LRT 172223

27272828

32323737

16201730

────

0.30.30.30.3

24242525

0.50.50.50.5

22222222

23232424

17 00017 00016 00016 000

LRT 202416LRT 202420LRT 202517LRT 202530

30303535

38383838

20252025

20.525.520.525.5

0.30.30.30.3

25252525

0.30.5──

22222222

24242424

16 00016 0006 0006 000

LRT 202520LRT 202525LRTZ 202520LRTZ 202525

36363636

34343939

16201730

────

0.30.30.30.3

26262828

0.50.510.5

24242424

25252727

15 00015 00014 00014 000

LRT 222616LRT 222620LRT 222817LRT 222830

32323737




Max. (1) da(2)

Shaft dia.

mm


g


──

NA 4902─

───

NA 6902

────

TAFI 152716TAFI 152720

──

────

────

39.5 50 35 61

1515151515

──

──

──

──

TRI 153320─

─GTRI 153320

81 90.5

1515

17

──

NA 4903─

───

NA 6903

────

TAFI 172916TAFI 172920

──

────

────

──

──

──

──

TRI 173425─

─GTRI 173425

──

NA 4904─

───

NA 6904

────

TAFI 203216TAFI 203220

──

────

────

48.5 61 78.5136

20202020

────

────

────

────

TRI 203820TRI 203825

──

──

GTRI 203820GTRI 203825

99124110138

20202020

20

──

NA 49/22─

───

NA 69/22

────

TAFI 223416TAFI 223420

──

────

────

22

Notes(1)　　Minimum allowable value of chamfer dimension r 　　 (2)　　Allowable axial shift amount of inner ring to outer ring 　　 (3)　　Allowable rotational speed applies to oil lubrication. For grease lubrication, a maximum of 60% of this value is allowable.Remarks1.　TAFI series with a bore diameter d of 22 mm or less have no oil hole. In others, the outer ring has an oil groove and an oil hole. 2.　No grease is prepacked. Perform proper lubrication.

TRI　 NA49 TAFI　 NA69（d ≦ 30）

GTRI


C

N


C0

N

16 30020 60021 40036 300

14 00017 70010 90019 300

24 90033 80028 90056 900

18 70025 30013 80028 800

14 40018 20011 70020 800

20 00027 10015 60032 500

29 10037 900

36 80057 800

15 30019 40021 00035 400

22 50030 50025 00048 900

28 90034 80033 30042 400

35 00044 40046 50063 700

24 30029 200

26 50037 200


min-1

D F wd

C

r

r

r

r

S

DadaD

BC

r

r

r

r

Fwd

BC

r

r

r

r

D d Fw

D


D



21 60030 90023 70042 100

37 20059 10030 70064 300

25 70036 80024 50041 800

42 20067 20032 70064 800

58 000 101 000

26 90038 60025 20043 000

46 20073 60034 70069 000

72 300110 000

37 90047 000

52 10076 500

With Inner Ring

38384242

20301730

────

0.30.30.30.3

29293030

0.510.50.5

27272727

28282929

14 00014 00013 00013 000

LRT 252920LRT 252930LRT 253017LRT 253030

36364040

42424545

20301730

────

0.30.30.30.3

32323232

0.5111

30303030

31313131

12 00012 00012 00012 000

LRT 283220LRT 283230LRT 283217LRT 283230

40404343

45454747

20301730

────

0.30.30.30.3

35353535

0.30.50.50.5

32323232

34343434

11 00011 00011 00011 000

LRT 303520LRT 303530LRT 303517LRT 303530

43434545

4444

2525

25.525.5

0.30.3

3030

0.5─

2727

2929

13 0005 000

LRT 253025LRTZ 253025

4242

4848

3030

30.530.5

0.30.3

3535

1─

3232

3434

11 0004 500

LRT 303530-1LRTZ 303530

4646

45 30 30.5 0.3 32 ─ 30 31 4 500 LRTZ 28323043

474752

203020

───

0.30.30.6

373740

0.30.50.5

343436

363639

11 00011 00010 000

LRT 323720LRT 323730LRT 324020

454548

525252

303630

30.5─

30.5

0.60.60.6

384038

0.50.3─

363636

373937

11 00010 0004 000

50 10079 80047 800

47 40061 100

LRT 323830LRT 324036LRTZ 323830

484848




Max. (1) da(2)

Notes(1)　　Minimum allowable value of chamfer dimension r 　　 (2)　　Allowable axial shift amount of inner ring to outer ring 　　 (3)　　Allowable rotational speed applies to oil lubrication. For grease lubrication, a maximum of 60% of this value is allowable.Remarks1.　The outer ring has an oil groove and an oil hole. 2.　No grease is prepacked. Perform proper lubrication.

Shaft dia.

mm


g


──

NA 4905─

───

NA 6905

────

TAFI 253820TAFI 253830

──

────

────

82123 92.5160

2525252525

──

NA 49/28─

───

NA 69/28

────

TAFI 284220TAFI 284230

──

────

────

96.5145101176

28282828

28

──

──

──

──

TRI 254425─

─GTRI 254425

157175

2525

─ ─ ─ ─ ─ GTRI 284530 196 28

──

NA 4906─

───

NA 6906

────

TAFI 304520TAFI 304530

──

────

────

112171106184

3030303030

──

──

──

──

TRI 304830─

─GTRI 304830

199225

3030

──

NA 49/32

───

───

TAFI 324720TAFI 324730

─

───

───

121180165

323232

32───

─NA 69/32─

───

───

TRI 325230──

──

GTRI 325230

245295270

323232

TRI　 NA49 TAFI　 NA69（d ≦ 30）

GTRINA69


C

N


C0

N


min-1

50 80053 50064 200

81 10095 700

121 000

28 20040 50031 200

D F wd

C

r

r

r

r

D F w

C

r

r

r

r

d D

BC

r

r

r

r

Fwd Dada

S

BC

r

r

r

r

D d Fw

D


D



136205

3838

300285520335

45454545

149225

4242

230320

4545

305340

4242

With Inner Ring

Shaft dia.

mm


g


──

NA 4907─

───

NA 6907

────

TAFI 355020TAFI 355030

──

────

────

129192178320

3535353535

──

──

──

TAFI 385320TAFI 385330

──

──38

─NA 4908──

──

NA 6908─

────

────

TRI 405930───

───

GTRI 405930

270245440300

40404040

─NA 4909──

──

NA 6909─

────

────

TRI 456430───

───

GTRI 456430

───

───

───

───

TRI 355630──

─GTRI 355520GTRI 355630

280191310

353535

──

──

──

TAFI 405520TAFI 405530

──

──

143215

4040

40

──

──

──

TAFI 425720TAFI 425730

──

──

42

──

──

──

TAFI 456225TAFI 456235

──

──

45

　 NA49 TAFI NA69


──

──

──

──

TRI 426230─

─GTRI 426230

50505555

20302036

────

0.30.30.60.6

40404242

0.30.50.50.3

37373939

39394141

10 00010 0009 5009 500

LRT 354020LRT 354030LRT 354220LRT 354236

48485151

59626259

30224030

30.5──

30.5

0.60.60.60.6

45484845

10.50.3─

44444444

44.5474744.5

9 0008 5008 5003 500

LRT 404530-1LRT 404822LRT 404840LRTZ 404530

55585855

64686864

30224030

30.5──

30.5

0.60.60.60.6

50525250

10.50.3─

49494949

49.5515149.5

8 0007 5007 5003 000

LRT 455030LRT 455222LRT 455240LRTZ 455030

60646460

565556

302030

30.520.530.5

0.60.60.6

424042

0.5──

393939

4139.541

9 5003 5003 500

LRT 354230LRTZ 354020LRTZ 354230

525152

5353

2030

──

0.30.3

4343

0.30.5

4040

4242

9 5009 500

LRT 384320LRT 384330

5151

5555

2030

──

0.30.3

4545

0.30.5

4242

4444

9 0009 000

LRT 404520LRT 404530

5353

5757

2030

──

0.30.3

4747

0.30.5

4444

4646

8 5008 500

LRT 424720LRT 424730

5555

6262

3030

30.530.5

0.60.6

4848

0.5─

4646

4747

8 5003 000

LRT 424830LRTZ 424830

5858

6262

2535

──

0.30.3

5050

0.51

4747

4949

8 0008 000

LRT 455025LRT 455035

6060




Max. (1) da(2)

TRI GTRI

85 300125 000

104 00073 300

147 000158 000

54 100 86 200 50 100100 000

58 20092 600

60 20095 800

94 80067 400

135 000142 000

62 20099 100

99 500154 000

90 10073 600

133 000

43 00058 000

57 70043 50074 60074 600

29 40042 30032 00054 900

30 50043 800

31 00044 600

55 10041 60071 30070 300

31 50045 200

56 30072 700

53 80044 30067 500


C

N


C0

N


min-1

D F wd

C

r

r

r

r

D Fw

C

r

r

r

r

d D

BC

r

r

r

r

Fwd Dada

S

BC

r

r

r

r

D d Fw

D


D



With Inner Ring

Shaft dia.

mm


g


──

NA 4910─

───

NA 6910

────

TAFI 506825TAFI 506835

──

────

────

270365295530

5050505050

──

NA 4912─

───

NA 6912

────

TAFI 608225TAFI 608235

──

────

────

395560440785

6060606060

──

NA 4914─

───

NA 6914

────

TAFI 709525TAFI 709535

──

────

────

540755765

1 400

70707070

70

──

NA 4911─

───

NA 6911

────

TAFI 557225TAFI 557235

──

────

────

275380410730

5555555555

──

──

──

──

TRI 558138─

─GTRI 558138

650710

5555

──

──

──

──

TRI 608945─

─GTRI 608945

9601 050

6060

NA 4913──

──

NA 6913

───

─TAFI 659035

─

───

───

470710840

656565

65

──

──

──

──

TRI 507745─

─GTRI 507745

755825

5050

　 NA49 TAFI NA69


8181

3838

38.538.5

11

6262

1.5─

6060

60.560.5

6 5002 500

LRT 556238LRTZ 556238

7676

909090

253545

───

111

727372

110.5

707070

70.57170.5

5 5005 5005 500

LRT 657225LRT 657335LRT 657245

858585

68687272

25352240

────

0.30.30.60.6

55555858

0.510.50.3

52525454

54545757

7 5007 5007 0007 000

LRT 505525LRT 505535LRT 505822LRT 505840

66666868

7777

4545

45.545.5

11

5858

2─

5555

5757

7 0002 500

LRT 505845LRTZ 505845

7272

72728080

25352545

────

0.30.311

60606363

0.5110.5

57576060

59596161

6 5006 5006 5006 500

LRT 556025LRT 556035LRT 556325LRT 556345

70707575

82828585

25352545

────

0.60.611

68686868

0.3110.5

64646565

66666666

6 0006 0006 0006 000

LRT 606825LRT 606835LRT 606825-1LRT 606845

78788080

9595

100100

25353054

────

1111

80808080

0.311.51

75757575

78787878

5 0005 0005 0005 000

LRT 708025LRT 708035LRT 708030LRT 708054

90909595

8989

4545

45.545.5

11

7070

2─

6565

6868

5 5002 000

LRT 607045LRTZ 607045

8484




Max. (1) da(2)

TRI GTRI

59 40078 10083 200

134 000

45 40061 20046 20079 200

137 000195 000158 000311 000

94 000138 00082 100

164 000

47 50064 10057 60098 700

103 000151 00097 200

194 000

92 000118 000

166 000241 000

54 80072 00060 200

103 000

117 000166 000105 000211 000

114 000147 000

228 000336 000

62 70080 400

108 000

113 000181 000227 000

104 000135 000

191 000280 000


C

N


C0

N


min-1

D F wd

C

r

r

r

r

D Fw

C

r

r

r

r

d D

BC

r

r

r

r

Fwd Dada

S

BC

r

r

r

r

D d Fw

D


D



With Inner Ring

105105105105

25303554

────

1111

85858585

0.51.51.51

80808080

83 83 83 83

4 5004 5004 5004 500

LRT 758525LRT 758530LRT 758535LRT 758554

100100100100

110110110110

25303554

────

1111

90909090

0.51.51.51

85858585

88 88 88 88

4 5004 5004 5004 500

LRT 809025LRT 809030LRT 809035LRT 809054

105105105105

115115120120

26363563

────

111.11.1

9595

100100

1210.5

909091.591.5

93 93 98 98

4 0004 0004 0004 000

LRT 859526LRT 859536LRT 8510035LRT 8510063

110110113.5113.5

118120118120

50455045

50.545.550.545.5

11.511.5

93959395

32.5──

90939093

91 93.5 91 93.5

4 5004 0001 6001 600

LRT 859350LRT 859545LRTZ 859350LRTZ 859545

113112113112

108108

4545

45.545.5

11

8383

2.5─

8080

81 81

5 0001 800

LRT 758345LRTZ 758345

103103

120120125

263635

───

111.1

100100105

121

959596.5

98 98103

4 0004 0004 000

LRT 9010026LRT 9010036LRT 9010535

115115118.5

125125125

506350

50.5─

50.5

1.51.11.5

100105100

30.5─

9896.598

98.5103 98.5

4 0004 0001 500

LRT 9010050LRT 9010563LRTZ 9010050

117118.5117




Max.(1) da(2)

Shaft dia.

mm


g


─NA 4915──

───

NA 6915

────

TAFI 7510525─

TAFI 7510535─

────

────

675810945

1 480

7575757575

──

NA 4917─

───

NA 6917

────

TAFI 8511526TAFI 8511536

──

────

────

7751 0801 2802 340

85858585

85────

────

────

────

TRI 8511850TRI 8512045

──

──

GTRI 8511850GTRI 8512045

1 6401 6101 7801 720

85858585

─NA 4916──

───

NA 6916

────

TAFI 8011025─

TAFI 8011035─

────

────

710855995

1 560

80808080

80

──

NA 4918

───

───

TAFI 9012026TAFI 9012036

─

───

───

8201 1401 350

909090

90───

─NA 6918─

───

───

TRI 9012550──

──

GTRI 9012550

1 8702 4602 020

909090

──

──

──

──

TRI 7510845─

─GTRI 7510845

1 3401 440

7575


TRI　 NA49 TAFI GTRINA69

172 000178 000234 000

76 30086 200

102 000138 000

355 000490 000549 000

145 000169 000210 000331 000

77 30087 300

103 000143 000

150 000175 000217 000351 000

79 700106 000110 000173 000

159 000231 000244 000467 000

165 000155 000224 000204 000

329 000305 000509 000455 000

82 400110 000113 000

168 000244 000258 000

146 000190 000

270 000396 000


C

N


C0

N


min-1

D F wd

C

r

r

r

r

D Fw

C

r

r

r

r

d D

BC

r

r

r

r

Fwd Dada

S

BC

r

r

r

r

D d Fw

D


D


2 8806 380

150150

With Inner Ring

125125130130

26363563

────

111.11.1

105105110110

1210.5

100100101.5101.5

103103108108

4 0004 0003 5003 500

LRT 9510526LRT 9510536LRT 9511035LRT 9511063

120120123.5123.5

130130

3040

──

11

110110

0.51.5

105105

108108

3 5003 500

LRT 10011030LRT 10011040

125125

135140135

504050

50.5─

50.5

1.51.11.5

110115110

31─

108106.5108

108.5113108.5

3 5003 5001 400

LRT 10011050LRT 10011540LRTZ 10011050

127133.5127

153153

5050

50.550.5

1.51.5

115115

3─

113113

113.5113.5

3 5001 300

LRT 10511550LRTZ 10511550

145145

140150

3040

──

11.1

120125

11

115116.5

118123

3 5003 000

LRT 11012030LRT 11012540

135143.5

150165

3045

──

11.1

130135

12

125126.5

128133

3 0003 000

LRT 12013030LRT 12013545

145158.5

178178

6060

60.560.5

1.51.5

140140

2.5─

133133

138138

3 0001 100

LRT 12514060LRTZ 12514060

170170

165180

3550

──

1.11.5

145150

12.5

136.5138

143148

3 0002 500

LRT 13014535LRT 13015050

158.5172

188188

6060

60.560.5

1.51.5

150150

2.5─

143143

148148

2 5001 000

LRT 13515060LRTZ 13515060

180180

175190

3550

──

1.11.5

155160

12.5

146.5148

153158

2 5002 500

LRT 14015535LRT 14016050

168.5182

190210

4060

──

1.12

165170

1.53

156.5159

163168

2 5002 500

LRT 15016540LRT 15017060

183.5201




Max.(1) da(2)

Shaft dia.

mm


g


──

NA 4919─

───

NA 6919

────

TAFI 9512526TAFI 9512536

──

────

────

8601 1901 4202 580

95959595

95

──

──

──

TAFI 10013030TAFI 10013040

──

──

1 0401 380

100100

100

──

──

──

──

TRI 10515350─

─GTRI 10515350

3 0203 270

105105

105

─NA 4922

──

NA 4822─

──

──

──

1 2002 120

110110

110

─NA 4924

──

NA 4824─

──

──

──

1 3002 960

120120

120

──

──

──

──

TRI 12517860─

─GTRI 12517860

4 7805 180

125125

125

─NA 4926

──

NA 4826─

──

──

──

1 9604 030

130130

130

──

──

──

──

TRI 13518860─

─GTRI 13518860

5 1005 530

135135

135

─NA 4928

──

NA 4828─

──

──

──

2 1004 290

140140

140

─NA 4930

──

NA 4830─

──

──

──150

─NA 4920─

───

───

───

TRI 10013550──

──

GTRI 10013550

2 0401 9602 200

100100100

TRINA49 TAFINA48

GTRINA69


116 000215 000

320 000423 000

120 000224 000

168 000324 000

84 700113 000116 000182 000

340 000540 000

675 000989 000

363 000580 000

446 000712 000

178 000258 000271 000514 000

183 000145 000245 000

395 000329 000603 000

233 000315 000

414 000614 000

93 200152 000

239 000357 000

96 900187 000

259 000435 000

307 000409 000

625 000923 000

106 000134 000

240 000324 000


C

N


C0

N


min-1


D F wd

C

r

r

r

r

D Fw

C

r

r

r

r

d

D

BC

r

r

r

r

Fwd Dada

S

BC

r

r

r

r

D d Fw

D


D


With Inner Ring

200220

4060

──

1.12

175180

1.53

166.5169

173178

2 5001 900

LRT 16017540LRT 16018060

193.5211

215230

4560

──

1.12

185190

1.53

176.5179

183188

1 9001 900

LRT 17018545LRT 17019060

208.5221

225250

4569

──

1.12

195205

1.53

186.5189

193203

1 9001 900

LRT 18019545LRT 18020569

218.5241

240260

5069

──

1.52

210215

1.53

198199

208213

1 8001 700

LRT 19021050LRT 19021569

232251

250280

5080

──

1.52.1

220225

1.54

208211

218223

1 6001 600

LRT 20022050LRT 20022580

242269

270300

5080

──

1.52.1

240245

1.54

228231

238243

1 5001 400

LRT 22024050LRT 22024580

262289

300320

6080

──

22.1

265265

24

249251

262262

1 3001 300

LRT 24026560LRT 24026580

291309

350380

69100

──

22.1

305310

2.54

289291

302307

950 950

LRT 28030569LRT 280310100

341369

320360

60100

──

22.1

285290

24

269271

282287

1 1001 100

LRT 26028560LRT 260290100

311349

380420

80118

──

2.13

330340

2.54

311313

327337

900 850

LRT 30033080LRT 300340118

369407

400440

80118

──

2.13

350360

2.54

331333

347357

750 750

LRT 32035080LRT 320360118

389427

420460

80118

──

2.13

370380

2.54

351353

367377

700 700

LRT 34037080LRT 340380118

409447




Max.(1) da(2)

NA49 NA48

Shaft dia.

mm


g


─NA 4932

──

NA 4832─

──

──

──

3 0506 750

160160

160

─NA 4934

──

NA 4834─

──

──

──

4 1207 110

170170

170

─NA 4936

──

NA 4836─

──

──

──

4 34010 200

180180

180

─NA 4938

──

NA 4838─

──

──

──

5 76010 700

190190

190

─NA 4940

──

NA 4840─

──

──

──

6 04015 400

200200

200

─NA 4944

──

NA 4844─

──

──

──

6 57016 700

220220

220

─NA 4952

──

NA 4852─

──

──

──

11 00031 100

260260

260

─NA 4956

──

NA 4856─

──

──

──

15 80033 100

280280

280

─NA 4960

──

NA 4860─

──

──

──

22 30051 400

300300

300

─NA 4964

──

NA 4864─

──

──

──

23 70054 400

320320

320

─NA 4968

──

NA 4868─

──

──

──

25 00057 300

340340

340

─NA 4948

──

NA 4848─

──

──

──

10 20018 000

240240

240


173 000337 000

211 000347 000

218 000434 000

249 000440 000

255 000518 000

266 000536 000

345 000565 000

354 000847 000

486 000877 000

610 0001 130 000

635 0001 170 000

651 0001 220 000

474 000761 000

567 000810 000

602 000989 000

726 0001 020 000

766 0001 120 000

833 0001 200 000

1 150 0001 320 000

1 220 0001 900 000

1 550 0002 040 000

1 900 0002 650 000

2 040 0002 830 000

2 140 0003 020 000


C

N


C0

N


min-1


D F wd

C

r

r

r

r

Dada

S

D


D


With Inner Ring

440480

80118

──

2.13

390400

2.54

371373

387397

650600

LRT 36039080LRT 360400118

429467

480520

100140

──

2.14

415430

35

391396

412427

600500

LRT 380415100LRT 380430140

469504

540 140 ─ 4 450 5 416 447 500 LRT 400450140524

560 140 ─ 4 470 5 436 467 500 LRT 420470140544

600 160 ─ 4 490 5 456 487 400 LRT 440490160584




Max.(1) da(2)

Shaft dia.

mm


g


─NA 4972

──

NA 4872─

──

──

──

26 40060 200

360360

360

─NA 4976

──

NA 4876─

──

──

──

44 60090 300

380380

380

NA 4980 ─ ─ ─ ─ ─ 94 400 400400

NA 4984 ─ ─ ─ ─ ─ 98 500 420420

NA 4988 ─ ─ ─ ─ ─ 131 000 440440

NA49 NA48


680 0001 260 000

951 0001 540 000

1 590 000

1 640 000

1 910 000

2 320 0003 200 000

2 860 0004 030 000

4 270 000

4 510 000

5 140 000


C

N


C0

N


min-1


D F wd

C

r

r

r

r

Dada

S

D


D


min-1

BR

Notes(1)　　Maximum permissible corner radius of the housing 　　 (2)　　Allowable rotational speed applies to oil lubrication. For grease lubrication, a maximum of 60% of this value is allowable.Remarks1.　The outer ring has an oil groove and an oil hole. 2.　No grease is prepacked. Perform proper lubrication.

Shaft dia.mm

(inch)

Identification number

Mass (Ref.)

g

Standard mounting dimensions　mm

Boundary dimensions　mm(inch)

DaMax.

ras max　

(1)

15.875（5╱8）19.050（3╱4）22.225（7╱8）25.400（1）28.575

（11╱8）31.750

（11╱4）34.925

（13╱8）38.100

（11╱2）41.275

（15╱8）

44.450（13╱4）

47.625（17╱8）

49

56 75

63 84.5

69 92.5

102128

110138

119149

149187

158199

170215250

225

15.875（ 5╱ 8）

19.050（ 3╱ 4）19.050（ 3╱ 4）

22.225（ 7╱ 8）22.225（ 7╱ 8）

25.400（1 ）25.400（1 ）

28.575（1 1╱ 8）28.575（1 1╱ 8）

31.750（1 1╱ 4）31.750（1 1╱ 4）

34.925（1 3╱ 8）34.925（1 3╱ 8）

38.100（1 1╱ 2）38.100（1 1╱ 2）

41.275（1 5╱ 8）41.275（1 5╱ 8）

44.450（1 3╱ 4）44.450（1 3╱ 4）44.450（1 3╱ 4）

47.625（1 7╱ 8）

28.575（1 1╱ 8）

31.750（1 1╱ 4）31.750（1 1╱ 4）

34.925（1 3╱ 8）34.925（1 3╱ 8）

38.100（1 1╱ 2）38.100（1 1╱ 2）

41.275（1 5╱ 8）41.275（1 5╱ 8）

44.450（1 3╱ 4）44.450（1 3╱ 4）

47.625（1 7╱ 8）47.625（1 7╱ 8）

52.388（2 1╱16）52.388（2 1╱16）

55.562（2 3╱16）55.562（2 3╱16）

58.738（2 5╱16）58.738（2 5╱16）60.325（2 3╱ 8）

61.912（2 7╱16）

19.050（ 3╱ 4）

19.050（ 3╱ 4）25.400（1 ）

19.050（ 3╱ 4）25.400（1 ）

19.050（ 3╱ 4）25.400（1 ）

25.400（1 ）31.750（1 1╱ 4）

25.400（1 ）31.750（1 1╱ 4）

25.400（1 ）31.750（1 1╱ 4）

25.400（1 ）31.750（1 1╱ 4）

25.400（1 ）31.750（1 1╱ 4）

25.400（1 ）31.750（1 1╱ 4）31.750（1 1╱ 4）

31.750（1 1╱ 4）

24.5

26.526.5

29.729.7

32.932.9

3636

39.239.2

42.442.4

45.145.1

48.348.3

51.551.553.1

54.7

BR 101812

BR 122012BR 122016

BR 142212BR 142216

BR 162412BR 162416

BR 182616BR 182620

BR 202816BR 202820

BR 223016BR 223020

BR 243316BR 243320

BR 263516BR 263520

BR 283716BR 283720BR 283820

BR 303920

0.6

11

11

11

11

11

11

1.51.5

1.51.5

1.51.51.5

1.5

18 900

21 70027 600

23 00029 100

25 30032 100

34 90043 200

36 00044 600

38 50047 700

43 70054 200

44 80055 600

47 50058 90058 900

60 100

19 700

24 40033 100

27 10036 800

31 90043 300

49 90065 600

53 50070 300

60 00078 900

66 90088 200

70 90093 400

78 200103 000103 000

108 000

25 000

20 00020 000

18 00018 000

16 00016 000

14 00014 000

13 00013 000

11 00011 000

11 00011 000

9 5009 500

9 0009 0009 000

8 500

Fw D C

Without Inner Ring, Inch Series


C

N


C0

N


Shaft dia. 15.875−47.625mm

D Fw

C

Da

ra

D


D


min-1


C

N


C0

N

Notes(1)　　Maximum permissible corner radius of the housing 　　 (2)　　Allowable rotational speed applies to oil lubrication. For grease lubrication, a maximum of 60% of this value is allowable.Remarks1.　 In bearings with a roller set bore diameter Fw of 69.850 mm or less, the outer ring has an oil groove and an oil hole. In others, the

outer ring has an oil groove and two oil holes. 2.　No grease is prepacked. Perform proper lubrication.

Shaft dia. mm

(inch)

Identification

number

Mass (Ref.)

g



DaMax.

ras max　

(1)Fw D C

Without Inner Ring, Inch Series


50.800（2）

190240

50.800（2 ）50.800（2 ）

65.088（2 9╱16）65.088（2 9╱16）

25.400（1 ）31.750（1 1╱ 4）

57.8 57.8

BR 324116BR 324120

1.51.5

57.150（21╱4）

435510

57.150（2 1╱ 4）57.150（2 1╱ 4）

76.200（3 ）76.200（3 ）

38.100（1 1╱ 2）44.450（1 3╱ 4）

69 69

BR 364824BR 364828

1.51.5

63.500（21╱2）

475555

63.500（2 1╱ 2）63.500（2 1╱ 2）

82.550（3 1╱ 4）82.550（3 1╱ 4）

38.100（1 1╱ 2）44.450（1 3╱ 4）

74.3 74.3

BR 405224BR 405228

22

69.850（23╱4）

510600

69.850（2 3╱ 4）69.850（2 3╱ 4）

88.900（3 1╱ 2）88.900（3 1╱ 2）

38.100（1 1╱ 2）44.450（1 3╱ 4）

80.7 80.7

BR 445624BR 445628

22

76.200（3）

555650

76.200（3 ）76.200（3 ）

95.250（3 3╱ 4）95.250（3 3╱ 4）

38.100（1 1╱ 2）44.450（1 3╱ 4）

87 87

BR 486024BR 486028

22

82.550（31╱4）

9901 140

82.550（3 1╱ 4）82.550（3 1╱ 4）

107.950（4 1╱ 4）107.950（4 1╱ 4）

44.450（1 3╱ 4）50.800（2 ）

99.7 99.7

BR 526828BR 526832

22

88.900（31╱2） 1 220 88.900（3

1╱ 2） 114.300（4

1╱ 2） 50.800（2 ） 106.1BR 567232 2

95.250（33╱4） 1 290 95.250（3

3╱ 4） 120.650（4

3╱ 4） 50.800（2 ） 111.4BR 607632 2.5

101.600（4） 1 370 101.600（4 ） 127.000（5 ） 50.800（2 ） 117.8BR 648032 2.5

90 300105 000

98 700114 000

141 000154 000

169 000

94 600110 000

105 000122 000

162 000

176 000

51 00063 200

158 000191 000

189 000228 000

259 000290 000

342 000

174 000210 000

211 000255 000

316 000

368 000

89 400118 000

7 0007 000

5 5005 500

5 0005 000

4 000

6 5006 500

5 5005 500

4 500

4 000

8 0008 000

BR

Shaft dia. 50.800−101.600mm

D Fw

C

Da

ra

D


D

Notes(1)　　Allowable axial shift amount of inner ring to outer ring 　　 (2)　　Maximum permissible corner radius of the shaft or housing 　　 (3)　　Allowable rotational speed applies to oil lubrication. For grease lubrication, a maximum of 60% of this value is allowable.Remarks1.　The inner ring and the outer ring each have an oil groove and an oil hole. 2.　No grease is prepacked. Perform proper lubrication.

Shaft dia. mm

(inch)

Identification

number

Mass (Ref.)

g


d D C B Fw S(1)

With Inner Ring, Inch Series


9.525（3╱8） 67.5 9.525（ 3╱

8） 28.575（1

1╱ 8） 19.050（ 3╱

4） 15.875（ 5╱ 8） 0.319.300BRI 61812

12.700（1╱2）

79.5106

12.700（ 1╱ 2）12.700（ 1╱ 2）

31.750（1 1╱ 4）31.750（1 1╱ 4）

19.050（ 3╱ 4）25.400（1 ）

19.050（ 3╱ 4）19.050（ 3╱ 4）

0.30.5

19.30025.650

BRI 82012BRI 82016

15.875（5╱8）

91122

15.875（ 5╱ 8）15.875（ 5╱ 8）

34.925（1 3╱ 8）34.925（1 3╱ 8）

19.050（ 3╱ 4）25.400（1 ）

22.225（ 7╱ 8）22.225（ 7╱ 8）

0.30.5

19.30025.650

BRI 102212BRI 102216

19.050（3╱4）

102136

19.050（ 3╱ 4）19.050（ 3╱ 4）

38.100（1 1╱ 2）38.100（1 1╱ 2）

19.050（ 3╱ 4）25.400（1 ）

25.400（1 ）25.400（1 ）

0.30.5

19.30025.650

BRI 122412BRI 122416

22.225（7╱8）

152190

22.225（ 7╱ 8）22.225（ 7╱ 8）

41.275（1 5╱ 8）41.275（1 5╱ 8）

25.400（1 ）31.750（1 1╱ 4）

28.575（1 1╱ 8）28.575（1 1╱ 8）

0.50.5

25.65032.000

BRI 142616BRI 142620

25.400（1）

166210

25.400（1 ）25.400（1 ）

44.450（1 3╱ 4）44.450（1 3╱ 4）

25.400（1 ）31.750（1 1╱ 4）

31.750（1 1╱ 4）31.750（1 1╱ 4）

0.50.5

25.65032.000

BRI 162816BRI 162820

28.575（11╱8）

182225

28.575（1 1╱ 8）28.575（1 1╱ 8）

47.625（1 7╱ 8）47.625（1 7╱ 8）

25.400（1 ）31.750（1 1╱ 4）

34.925（1 3╱ 8）34.925（1 3╱ 8）

0.50.5

25.65032.000

BRI 183016BRI 183020

31.750（11╱4）

220275

31.750（1 1╱ 4）31.750（1 1╱ 4）

52.388（2 1╱16）52.388（2 1╱16）

25.400（1 ）31.750（1 1╱ 4）

38.100（1 1╱ 2）38.100（1 1╱ 2）

0.50.5

25.65032.000

BRI 203316BRI 203320

34.925（13╱8）

235295

34.925（1 3╱ 8）34.925（1 3╱ 8）

55.562（2 3╱16）55.562（2 3╱16）

25.400（1 ）31.750（1 1╱ 4）

41.275（1 5╱ 8）41.275（1 5╱ 8）

0.50.5

25.65032.000

BRI 223516BRI 223520

38.100（11╱2）

250315350380

38.100（1 1╱ 2）38.100（1 1╱ 2）38.100（1 1╱ 2）38.100（1 1╱ 2）

58.738（2 5╱16）58.738（2 5╱16）60.325（2 3╱ 8）61.912（2 7╱16）

25.400（1 ）31.750（1 1╱ 4）31.750（1 1╱ 4）31.750（1 1╱ 4）

44.450（1 3╱ 4）44.450（1 3╱ 4）44.450（1 3╱ 4）47.625（1 7╱ 8）

0.50.50.50.5

25.65032.00032.00032.000

BRI 243716BRI 243720BRI 243820BRI 243920

41.275（15╱8）

325410

41.275（1 5╱ 8）41.275（1 5╱ 8）

65.088（2 9╱16）65.088（2 9╱16）

25.400（1 ）31.750（1 1╱ 4）

50.800（2 ）50.800（2 ）

0.50.5

25.65032.000

BRI 264116BRI 264120

Shaft dia. 9.525− 41.275mm


min-1


BRI

(2)


Min. Max.

DaMax.

ras max　

da


C

N


C0

N

14 14.5 24.5 0.6 18 900

21 70027 600

23 00029 100

25 30032 100

34 90043 200

36 00044 600

38 50047 700

43 70054 200

44 80055 600

47 50058 90058 90060 100

51 00063 200

19 700

24 40033 100

27 10036 800

31 90043 300

49 90065 600

53 50070 300

60 00078 900

66 90088 200

70 90093 400

78 200103 000103 000108 000

89 400118 000

25 000 LRB 61012

17.517.5

1818

26.526.5

11

20 00020 000

LRB 81212LRB 81216

2121

21.221.2

29.729.7

11

18 00018 000

LRB 101412LRB 101416

2424

24.424.4

32.932.9

11

16 00016 000

LRB 121612LRB 121616

2727

27.527.5

3636

11

14 00014 000

LRB 141816LRB 141820

30.530.5

30.730.7

39.239.2

11

13 00013 000

LRB 162016LRB 162020

33.533.5

33.933.9

42.442.4

11

11 00011 000

LRB 182216LRB 182220

3737

37.137.1

45.145.1

1.51.5

11 00011 000

LRB 202416LRB 202420

40.240.2

40.240.2

48.348.3

1.51.5

9 5009 500

LRB 222616LRB 222620

43.343.343.343.3

43.443.443.443.4

51.551.553.154.7

1.51.51.51.5

9 0009 0009 0008 500

LRB 242816LRB 242820LRB 242820LRB 243020

4848

4949

57.857.8

1.51.5

8 0008 000

LRB 263216LRB 263220

D d F w

BC

da

ra

ra

Da

S

D


D


Shaft dia. mm

(inch)


Mass (Ref.)

g


d D C B Fw S(1)

With Inner Ring, Inch Series

Notes(1)　　Allowable axial shift amount of inner ring to outer ring 　　 (2)　　Maximum permissible corner radius of the shaft or housing 　　 (3)　　Allowable rotational speed applies to oil lubrication. For grease lubrication, a maximum of 60% of this value is allowable.Remarks1.　 In bearings with a bearing bore diameter, d, of 57.150 mm or less, the outer ring has an oil groove and an oil hole. In bearings with

a bearing bore diameter, d, of 76.200 mm or less, the inner ring has an oil groove and an oil hole. In others, the inner ring and the outer ring each have an oil groove and two oil holes.

2.　No grease is prepacked. Perform proper lubrication.

44.450（13╱4）

735855

44.450（1 3╱ 4）44.450（1 3╱ 4）

76.200（3 ）76.200（3 ）

38.100（1 1╱ 2）44.450（1 3╱ 4）

57.150（2 1╱ 4）57.150（2 1╱ 4）

11

38.35044.700

BRI 284824BRI 284828

50.800（2）

810945

50.800（2 ）50.800（2 ）

82.550（3 1╱ 4）82.550（3 1╱ 4）

38.100（1 1╱ 2）44.450（1 3╱ 4）

63.500（2 1╱ 2）63.500（2 1╱ 2）

11

38.35044.700

BRI 325224BRI 325228

57.150（21╱4）

8851 040

57.150（2 1╱ 4）57.150（2 1╱ 4）

88.900（3 1╱ 2）88.900（3 1╱ 2）

38.100（1 1╱ 2）44.450（1 3╱ 4）

69.850（2 3╱ 4）69.850（2 3╱ 4）

11

38.35044.700

BRI 365624BRI 365628

63.500（21╱2）

9651 130

63.500（2 1╱ 2）63.500（2 1╱ 2）

95.250（3 3╱ 4）95.250（3 3╱ 4）

38.100（1 1╱ 2）44.450（1 3╱ 4）

76.200（3 ）76.200（3 ）

11

38.35044.700

BRI 406024BRI 406028

69.850（23╱4）

1 5201 740

69.850（2 3╱ 4）69.850（2 3╱ 4）

107.950（4 1╱ 4）107.950（4 1╱ 4）

44.450（1 3╱ 4）50.800（2 ）

82.550（3 1╱ 4）82.550（3 1╱ 4）

1.53

44.70051.050

BRI 446828BRI 446832

76.200（3） 1 860 76.200（3 ） 114.300（4 1╱ 2） 50.800（2 ） 88.900（3 1╱ 2） 351.050BRI 487232

82.550（31╱4） 1 980 82.550（3 1╱ 4） 120.650（4 3╱ 4） 50.800（2 ） 95.250（3 3╱ 4） 351.050BRI 527632

88.900（31╱2） 2 120 88.900（3 1╱ 2） 127.000（5 ） 50.800（2 ） 101.600（4 ） 351.050BRI 568032

Shaft dia. 44.450−88.900mm


C

N


C0

N


BRI

(2)


Min. Max.

DaMax.

ras max　

da

52.552.5

5555

69 69

1.51.5

90 300105 000

94 600 110 000

98 700114 000

105 000122 000

141 000154 000

162 000

169 000

176 000

158 000191 000

174 000210 000

189 000228 000

211 000255 000

259 000290 000

316 000

342 000

368 000

7 0007 000

LRB 283624LRB 283628

5858

6161

74.3 74.3

22

6 5006 500

LRB 324024LRB 324028

6565

6767

80.7 80.7

22

5 5005 500

LRB 364424LRB 364428

7171

7373

87 87

22

5 5005 500

LRB 404824LRB 404828

7777

7979

99.7 99.7

22

5 0005 000

LRB 445228LRB 445232

83.5 86 106.1 2 4 500 LRB 485632

91 93 111.4 2.5 4 000 LRB 526032

97 99 117.8 2.5 4 000 LRB 566432


min-1

D d F w

BC

da

ra

ra

Da

S

D


D


With Seal, Without Inner Ring



Da

Max. mm


min-1


C

N


C0

N

Notes(1)　　Minimum allowable value of chamfer dimension r 　　 (2)　　Allowable rotational speed applies to grease lubrication.Remarks1.　The outer ring has an oil groove and an oil hole. 2.　 Bearings are provided with prepacked grease. Bearings with a seal on one side are not provided with prepacked grease. Perform

proper lubrication for use.

g D C rs minFw(1)

Shaft dia.

mm


g

With two seals With one seal With one sealWith two seals

14

16

18

20

22

25

28

30

32

35

40

42

45

RNA 4900UU

RNA 4901UU─

RNA 49/14UU

RNA 4902UU─

RNA 4903UU─

RNA 4904UU─

RNA 49/22UU─

RNA 4905UU─

RNA 49/28UU─

RNA 4906UU─

RNA 49/32UU─

RNA 4907UU─

RNA 49/38UU

──

RNA 6901UU

──

RNA 6902UU

─ RNA 6903UU

─ RNA 6904UU

─ RNA 69/22UU

─ RNA 6905UU

─ RNA 69/28UU

─ RNA 6906UU

─ RNA 69/32UU

─ RNA 6907UU

─

RNA 4900U

RNA 4901U─

RNA 49/14U

RNA 4902U─

RNA 4903U─

RNA 4904U─

RNA 49/22U─

RNA 4905U─

RNA 49/28U─

RNA 4906U─

RNA 49/32U─

RNA 4907U─

RNA 49/38U

──

RNA 6901U

──

RNA 6902U

─ RNA 6903U

─ RNA 6904U

─ RNA 69/22U

─ RNA 6905U

─ RNA 69/28U

─ RNA 6906U

─ RNA 69/32U

─ RNA 6907U

─

16.3 14

1616

18

2222

2020

2525

2828

3030

3232

3535

4040

45

4242

22

2424

26

3030

2828

3737

3939

4242

4545

4747

5252

58

5555

13

1322

13

1323

1323

1730

1730

1730

1730

1730

2036

20

2036

0.3

0.30.3

0.3

0.30.3

0.30.3

0.30.3

0.30.3

0.30.3

0.30.3

0.30.3

0.60.6

0.6

0.60.6

20

2222

24

2828

2626

3535

3737

4040

4343

4545

4848

54

5151

8 080

8 47015 500

9 260

10 30019 800

9 57018 500

18 00033 000

18 30033 800

20 30039 200

21 00038 900

21 50040 100

29 40050 300

31 600

30 10051 600

8 490

9 32020 400

10 800

13 10030 600

11 60027 100

20 50044 600

23 70052 000

25 10058 700

26 80059 100

28 40063 000

44 20088 300

50 400

46 30092 600

14 000

12 00012 000

11 000

8 5008 500

9 5009 500

7 5007 500

7 0007 000

6 5006 500

6 0006 000

5 5005 500

5 0005 000

4 000

4 5004 500

17.9 30

19.7

21.5 37.5

23 40.5

54.5 95.5

55.5 97.5

63 111

75.5 133

71 125

94.5 170

112 200

119

Boundary dimensionsmm

D C rs minFw(1)

RNA49 … UURNA69 … UU(Fw ≦ 35)

RNA49 … URNA69 … U(Fw ≦ 35)

RNA69 … UU RNA69 … U

D Fw

C

r

r

D Fw

C

r

r

D Fw

C

r

r

D Fw

C

r

r

Da

D


D






Shaft dia.

mm


g


48

50

52

55

58

60

63

65

68

70

72

75

80

85

RNA 4908UU─

─ RNA 6908UU

─ RNA 6908U

──

RNA 6909U

──

RNA 6910U

──

RNA 6911U

──

RNA 6912U

──

RNA 6913U

──

RNA 6914U

─ RNA 6915U

─−

RNA 6909UU

──

RNA 6910UU

──

RNA 6911UU

──

RNA 6912UU

──

RNA 6913UU

─ RNA 6914UU

─ RNA 6915UU

─

RNA 49/42UU

RNA 4909UU─

RNA 49/48UU

RNA 4910UU─

RNA 49/52UU

RNA 4911UU─

RNA 49/58UU

RNA 4912UU─

RNA 49/62UU

RNA 4913UU─

RNA 49/68UU

RNA 4914UU─

RNA 4915UU─

RNA 4908U─

RNA 49/42U

RNA 4909U─

RNA 49/48U

RNA 4910U─

RNA 49/52U

RNA 4911U─

RNA 49/58U

RNA 4912U─

RNA 49/62U

RNA 4913U─

RNA 49/68U

RNA 4914U─

RNA 4915U─

4848

50

5252

5858

55

60

6363

65

6868

70

7272

8080

8585

75

6262

65

6868

7272

70

75

8080

82

8585

88

9090

100100

105105

95

2240

22

2240

2240

22

22

2545

25

2545

25

2545

3054

3054

30

0.6 0.6

0.6

0.6 0.6

0.6 0.6

0.6

0.6

1 1

1

1 1

1

1 1

1 1

1 1

1

5858

61

6464

6868

66

71

7575

77

8080

83

8585

9595

100100

90

37 20063 700

38 000

38 90066 600

41 30070 800

39 600

42 100

52 20089 400

53 400

54 50093 400

55 700

56 80097 400

76 900124 000

79 600128 000

73 900

58 400117 000

60 900

63 400127 000

71 100142 000

66 100

73 600

85 700171 000

89 200

92 800186 000

96 300

99 800200 000

143 000281 000

153 000299 000

133 000

4 0004 000

4 000

3 5003 500

3 5003 500

3 500

3 000

3 0003 000

3 000

3 0003 000

2 500

2 5002 500

2 5002 500

2 0002 000

2 500

150270

173

197355

187

177320

200

265470

275

285505

320

325580

465

495910

520960



min-1D C rs minFw

(1)

RNA49 … UU RNA49 … U RNA69 … UU RNA69 … U


Da

Max. mm


C

N


C0

N

D Fw

C

r

r

D Fw

C

r

r

D Fw

C

r

r

D Fw

C

r

r

Da

D


D






Shaft dia.

mm


g


90

95

100

105

110

115

125

135

150

160

RNA 4916UU─

─ RNA 6916UU

─ RNA 6916U

──

RNA 6917U

─ RNA 6918U

─ RNA 6919U

─────

──

RNA 6917UU

─ RNA 6918UU

─ RNA 6919UU

─────

RNA 49/82UU

RNA 4917UU─

RNA 4918UU─

RNA 4919UU─

RNA 4920UU

RNA 4922UU

RNA 4924UU

RNA 4926UU

RNA 4928UU

RNA 4916U─

RNA 49/82U

RNA 4917U─

RNA 4918U─

RNA 4919U─

RNA 4920U

RNA 4922U

RNA 4924U

RNA 4926U

RNA 4928U

9090

95

100100

110110

105105

115

125

135

150

160

110110

115

120120

130130

125125

140

150

165

180

190

3054

30

3563

3563

3563

40

40

45

50

50

1 1

1

1.1 1.1

1.1 1.1

1.1 1.1

1.1

1.1

1.1

1.5

1.5

5451 010

570

6951 300

7301 360

7601 420

1 280

1 200

1 940

2 360

2 510


D C rs minFw(1)

RNA49 … UU

105 105

110

113.5 113.5

123.5 123.5

118.5 118.5

133.5

143.5

158.5

172

182

80 700132 000

83 200

103 000168 000

109 000177 000

106 000172 000

134 000

140 000

178 000

206 000

214 000

158 000317 000

168 000

225 000448 000

250 000493 000

238 000471 000

297 000

322 000

410 000

511 000

549 000

2 0002 000

2 000

1 9001 900

1 7001 700

1 8001 800

1 700

1 500

1 400

1 300

1 200


min-1

RNA49 … U RNA69 … UU RNA69 … U


Da

Max. mm


C

N


C0

N

D Fw

C

r

r

D Fw

C

r

r

D Fw

C

r

r

D Fw

C

r

r

Da

D


D




With Seal, With Inner Ring


Shaft dia.

mm


g


10

12

15

17

20

22

25

28

30

32

35

40

NA 4900UU ─ ──

NA 6901U

─NA 6902U

─NA 6903U

─NA 6904U

─NA 69/22U

─NA 6905U

─NA 69/28U

─NA 6906U

─NA 69/32U

─NA 6907U

─NA 6908U

─NA 6901UU

─NA 6902UU

─NA 6903UU

─NA 6904UU

─NA 69/22UU

─NA 6905UU

─NA 69/28UU

─NA 6906UU

─NA 69/32UU

─NA 6907UU

─NA 6908UU

NA 4901UU─

NA 4902UU─

NA 4903UU─

NA 4904UU─

NA 49/22UU─

NA 4905UU─

NA 49/28UU─

NA 4906UU─

NA 49/32UU─

NA 4907UU─

NA 4908UU─

NA 4900U

NA 4901U─

NA 4902U─

NA 4903U─

NA 4904U─

NA 49/22U─

NA 4905U─

NA 49/28U─

NA 4906U─

NA 49/32U─

NA 4907U─

NA 4908U─

10

1212

1515

2020

1717

2222

2525

2828

3030

3232

3535

4040

22

2424

2828

3737

3030

3939

4242

4545

4747

5252

5555

6262

13

1322

1323

1730

1323

1730

1730

1730

1730

2036

2036

2240

14

1423

1424

1831

1424

1831

1831

1831

1831

2137

2137

2341

24.5

27.5 45.5

36 62.5

39.5 68.5

78.5 137

92.5 162

87.5 153

101 177

106 185

167 300

179 320

245 440


D C Bd

NA49 … UUNA69 … UU(d ≦ 30)

12

1414

1717

2222

1919

2424

2727

3030

3232

3636

3939

4444

13

1515

1919

2424

2121

2727

2929

3131

3434

3939

4141

4747

20

2222

2626

3535

2828

3737

4040

4343

4545

4848

5151

5858

8 080

8 47015 500

9 57018 500

18 00033 000

10 30019 800

18 30033 800

20 30039 200

21 00038 900

21 50040 100

29 40050 300

30 10051 600

37 20063 700

14 000

12 00012 000

9 5009 500

7 5007 500

8 5008 500

7 0007 000

6 5006 500

6 0006 000

5 5005 500

5 0005 000

4 5004 500

4 0004 000


min-1

0.3

0.30.3

0.30.3

0.30.3

0.30.3

0.30.3

0.30.3

0.30.3

0.30.3

0.60.6

0.60.6

0.60.6

Fw

14

1616

2020

2525

2222

2828

3030

3232

3535

4040

4242

4848

rs min(1)


LRTZ 101414

LRTZ 121614LRTZ 121623

LRTZ 152014LRTZ 152024

LRTZ 172214LRTZ 172224

LRTZ 202518LRTZ 202531

LRTZ 222818LRTZ 222831

LRTZ 253018LRTZ 253031

LRTZ 283218LRTZ 283231

LRTZ 303518LRTZ 303531

LRTZ 324021LRTZ 324037

LRTZ 354221LRTZ 354237

LRTZ 404823LRTZ 404841


Min. Max.

DaMax.

da

NA49 … UNA69 … U(d ≦ 30)

NA69 … UU NA69 … U


C

N


C0

N

8 490

9 32020 400

11 60027 100

13 10030 600

20 50044 600

23 70052 000

25 10058 700

26 80059 100

28 40063 000

44 20088 300

46 30092 600

58 400117 000

D d Fw

CB

r

r

r

r

D Fwd

BC

r

r

r

r

D Fwd

BC

r

r

r

r

BC

r

r

r

r

D d Fw da Da

D


D






Shaft dia.

mm


g


45

50

55

60

65

70

75

80

85

90

95

100

110

NA 4909UU─

─NA 6909UU

─NA 6909U

─NA 6910U

─NA 6911U

─NA 6912U

─NA 6913U

─NA 6914U

─NA 6915U

─NA 6916U

─NA 6917U

─NA 6918U

─NA 6919U

──

─NA 6910UU

─NA 6911UU

─NA 6912UU

─NA 6913UU

─NA 6914UU

─NA 6915UU

─NA 6916UU

─NA 6917UU

─NA 6918UU

─NA 6919UU

──

NA 4910UU─

NA 4911UU─

NA 4912UU─

NA 4913UU─

NA 4914UU─

NA 4915UU─

NA 4916UU─

NA 4917UU─

NA 4918UU─

NA 4919UU─

NA 4920UU

NA 4922UU

NA 4909U─

NA 4910U─

NA 4911U─

NA 4912U─

NA 4913U─

NA 4914U─

NA 4915U─

NA 4916U─

NA 4917U─

NA 4918U─

NA 4919U─

NA 4920U

NA 4922U

4545

5050

5555

6565

6060

7070

7575

8080

8585

9090

9595

100

110

6868

7272

8080

9090

8585

100100

105105

110110

120120

125125

130130

140

150

2240

2240

2545

2545

2545

3054

3054

3054

3563

3563

3563

40

40

2341

2341

2646

2646

2646

3155

3155

3155

3664

3664

3664

41

41

49 49

54 54

60 60

70 70

65 65

75 75

80 80

85 85

91.5 91.5

96.5 96.5

101.5 101.5

106.5

116.5

51 51

57 57

61 61

70.5 70.5

66 66

78 78

83 83

88 88

98 98

103 103

108 108

113

123

64 64

68 68

75 75

85 85

80 80

95 95

100 100

105 105

113.5 113.5

118.5 118.5

123.5 123.5

133.5

143.5

38 900 66 600

41 30070 800

52 20089 400

56 80097 400

54 50093 400

76 900124 000

79 600128 000

80 700132 000

103 000168 000

106 000172 000

109 000177 000

134 000

140 000

63 400127 000

71 100142 000

85 700171 000

99 800200 000

92 800186 000

143 000281 000

153 000299 000

158 000317 000

225 000448 000

238 000471 000

250 000493 000

297 000

322 000

3 5003 500

3 5003 500

3 0003 000

2 5002 500

3 0003 000

2 5002 500

2 0002 000

2 0002 000

1 9001 900

1 8001 800

1 7001 700

1 700

1 500

290520

295530

415730

445785

475845

8151 480

7701 400

8601 570

1 3002 360

1 3602 480

1 4202 600

1 980

2 150



min-1D C Bd

0.6 0.6

0.6 0.6

1 1

1 1

1 1

1 1

1 1

1 1

1.1 1.1

1.1 1.1

1.1 1.1

1.1

1.1

Fw

5252

5858

6363

7272

6868

8080

8585

9090

100100

105105

110110

115

125

rs min(1)


LRTZ 455223LRTZ 455241

LRTZ 505823LRTZ 505841

LRTZ 556326LRTZ 556346

LRTZ 606826LRTZ 606846

LRTZ 657226LRTZ 657246

LRTZ 708031LRTZ 708055

LRTZ 758531LRTZ 758555

LRTZ 809031LRTZ 809055

LRTZ 8510036LRTZ 8510064

LRTZ 9010536LRTZ 9010564

LRTZ 9511036LRTZ 9511064

LRTZ 10011541

LRTZ 11012541


Min. Max.

DaMax.

da

NA49 … UU NA49 … U NA69 … UU NA69 … U


C

N


C0

N

D d Fw

CB

r

r

r

r

D Fwd

BC

r

r

r

r

D Fwd

BC

r

r

r

r

da Da

BC

r

r

r

r

D d Fw

D


D





Shaft dia.

mm


g


120

130

140

NA 4924UU ─ ───

──

NA 4926UU

NA 4928UU

NA 4924U

NA 4926U

NA 4928U

120

130

140

165

180

190

45

50

50

46

51

51

126.5

138

148

133

148

158

158.5

172

182

178 000

206 000

214 000

410 000

511 000

549 000

1 400

1 300

1 200

2 990

4 080

4 340



min-1D C Bd

1.1

1.5

1.5

Fw

135

150

160

rs min(1)


LRTZ 12013546

LRTZ 13015051

LRTZ 14016051


Min. Max.

DaMax.

da

NA49 … UU NA49 … U


C

N


C0

N


D Fwd

BC

r

r

r

r

da DaD d Fw

CB

r

r

r

r

D


D


With Seal, Without Inner Ring, Inch Series

Shaft dia. 15.875−50.800mm

Notes(1)　　Maximum permissible corner radius of the housing 　　 (2)　　Allowable rotational speed applies to grease lubrication.Remarks1.　The outer ring has an oil groove and an oil hole. 2.　 Bearings are provided with prepacked grease. 3.　 If one side sealed type are needed, please contact IKO.

54


min-1

Shaft dia.mm

(inch)


With two seals

Mass (Ref.)

g



DaMax.

ras max(1)

Fw D C

15.875（5╱8）19.050（3╱4）22.225（7╱8）25.400（1）28.575

（11╱8）31.750

（11╱4）34.925

（13╱8）38.100

（11╱2）41.275

（15╱8）44.450

（13╱4）47.625

（17╱8）50.800（2）

68

76

83

115

124

134

168

179

193

202

216

15.875（ 5╱ 8）

19.050（ 3╱ 4）

22.225（ 7╱ 8）

25.400（1 ）

28.575（1 1╱ 8）

31.750（1 1╱ 4）

34.925（1 3╱ 8）

38.100（1 1╱ 2）

41.275（1 5╱ 8）

44.450（1 3╱ 4）

47.625（1 7╱ 8）

50.800（2 ）

28.575（1 1╱ 8）

31.750（1 1╱ 4）

34.925（1 3╱ 8）

38.100（1 1╱ 2）

41.275（1 5╱ 8）

44.450（1 3╱ 4）

47.625（1 7╱ 8）

52.388（2 1╱16）

55.562（2 3╱16）

58.738（2 5╱16）

61.912（2 7╱16）

65.088（2 9╱16）

25.400（1 ）

25.400（1 ）

25.400（1 ）

25.400（1 ）

31.750（1 1╱ 4）

31.750（1 1╱ 4）

31.750（1 1╱ 4）

31.750（1 1╱ 4）

31.750（1 1╱ 4）

31.750（1 1╱ 4）

31.750（1 1╱ 4）

31.750（1 1╱ 4）

24.5

26.5

29.7

32.9

36.0

39.2

42.4

45.1

48.3

51.5

54.7

57.8

BR 101816 UU

BR 122016 UU

BR 142216 UU

BR 162416 UU

BR 182620 UU

BR 202820 UU

BR 223020 UU

BR 243320 UU

BR 263520 UU

BR 283720 UU

BR 303920 UU

BR 324120 UU

0.6

1.0

1.0

1.0

1.0

1.0

1.0

1.5

1.5

1.5

1.5

1.5

18 300

20 700

21 600

23 600

34 900

36 000

38 500

43 700

44 800

47 500

48 500

51 000

20 000

24 400

26 900

31 300

49 900

53 500

60 000

66 900

70 900

78 200

82 100

89 400 4 000

12 000

10 000

9 000

8 000

7 000

6 500

5 500

5 500

4 500

4 500

4 000


C

N


C0

N

BR … UU

C

D Fw Da

ra

D


D


With Seal, Without Inner Ring, Inch Series

Shaft dia. 57.150−95.250mm

Notes(1)　　Maximum permissible corner radius of the housing 　　 (2)　　Allowable rotational speed applies to grease lubrication.Remarks1.　The outer ring has an oil groove and an oil hole. 2.　 Bearings are provided with prepacked grease. 3.　If one side sealed type are needed, please contact IKO.

459


min-1

Shaft dia.mm

(inch)


With two seals

Mass (Ref.)

g



DaMax.

ras max(1)

Fw D C

57.150（21╱4）63.500

（21╱2）69.850

（23╱4）76.200（3）82.550

（31╱4）88.900

（31╱2）95.250

（33╱4）

499

540

585

891

1 098

1 161

57.150（2 1╱ 4）

63.500（2 1╱ 2）

69.850（2 3╱ 4）

76.200（3 ）

82.550（3 1╱ 4）

88.900（3 1╱ 2）

95.250（3 3╱ 4）

76.200（3 ）

82.550（3 1╱ 4）

88.900（3 1╱ 2）

95.250（3 3╱ 4）

107.950（4 1╱ 4）

114.300（4 1╱ 2）

120.650（4 3╱ 4）

44.450（1 3╱ 4）

44.450（1 3╱ 4）

44.450（1 3╱ 4）

44.450（1 3╱ 4）

44.450（1 3╱ 4）

50.800（2 ）

50.800（2 ）

69.0

74.3

80.7

87.0

99.7

106.1

111.4

BR 364828 UU

BR 405228 UU

BR 445628 UU

BR 486028 UU

BR 526828 UU

BR 567232 UU

BR 607632 UU

1.5

2.0

2.0

2.0

2.0

2.0

2.5

90 300

94 600

98 700

105 000

109 000

142 000

148 000

158 000

174 000

189 000

211 000

227 000

265 000

287 000

3 500

3 000

2 500

2 500

2 500

2 000

2 000


C

N


C0

N

BR … UU

C

D Fw Da

ra

D


D


With Seal, With Inner Ring, Inch Series

Shaft dia. 9.525− 44.450mm


min-1


(1)

Min. Max.

DaMax.

ras maxda


C

N


C0

N

Notes(1)　　Maximum permissible corner radius of the shaft or housing 　　 (2)　　Allowable rotational speed applies to grease lubrication.Remarks1.　The inner ring and the outer ring each have an oil groove and an oil hole. 2.　 Bearings are provided with prepacked grease. 3.　If one side sealed type are needed, please contact IKO.

Shaft dia.mm

(inch)


g


d D C B Fw

9.525（3╱8）12.700（1╱2）15.875（5╱8）19.050（3╱4）22.225（7╱8）25.400（1）28.575

（11╱8）31.750

（11╱4）34.925

（13╱8）38.100

（11╱2）41.275

（15╱8）44.450

（13╱4）

BRI 61816 UU

BRI 82016 UU

BRI 102216 UU

BRI 122416 UU

BRI 142620 UU

BRI 162820 UU

BRI 183020 UU

BRI 203320 UU

BRI 223520 UU

BRI 243720 UUBRI 243920 UU

BRI 264120 UU

BRI 284828 UU

79

99

113.5

127

177

196

211

254

275

293362

386

804

9.525（ 3╱ 8） 28.575（1 1╱ 8）

12.700（ 1╱ 2） 31.750（1 1╱ 4）

15.875（ 5╱ 8） 34.925（1 3╱ 8）

19.050（ 3╱ 4） 38.100（1 1╱ 2）

22.225（ 7╱ 8） 41.275（1 5╱ 8）

25.400（1 ） 44.450（1 3╱ 4）

28.575（1 1 ╱ 8） 47.625（1 7╱ 8）

31.750（1 1╱ 4） 52.388（2 1╱16）

34.925（1 3╱ 8） 55.562（2 3╱16）

38.100（1 1╱ 2）38.100（1 1╱ 2）

58.738（2 5╱16）61.912（2 7╱16）

41.275（1 5╱ 8） 65.088（2 9╱16）

44.450（1 3╱4） 76.200（3 ）

25.400（1 ）

25.400（1 ）

25.400（1 ）

25.400（1 ）

31.750（1 1╱ 4）

31.750（1 1╱ 4）

31.750（1 1╱ 4）

31.750（1 1╱ 4）

31.750（1 1╱ 4）

31.750（1 1╱ 4）31.750（1 1╱ 4）

31.750（1 1╱ 4）

44.450（1 3╱ 4）

25.650

25.650

25.650

25.650

32.000

32.000

32.000

32.000

32.000

32.00032.000

32.000

44.700

15.875（ 5╱ 8）

19.050（ 3╱ 4）

22.225（ 7╱ 8）

25.400（1 ）

28.575（1 1╱ 8）

31.750（1 1╱ 4）

34.925（1 3╱ 8）

38.100（1 1╱ 2）

41.275（1 5╱ 8）

44.450（1 3╱ 4）47.625（1 7╱ 8）

50.800（2 ）

57.150（2 1╱ 4）

With two seals

14

17.5

21

24

27

30.5

33.5

37

40.2

43.343.3

48

52.5

14.5

18

21.2

24.4

27.5

30.7

33.9

37.1

40.2

43.445

49

55

24.5

26.5

29.7

32.9

36.0

39.2

42.4

45.1

48.3

51.554.7

57.8

69.0

0.6

0.6

0.6

0.6

0.6

0.6

0.6

0.6

0.6

0.61

1

1.5

18 300

20 700

21 600

23 600

34 900

36 000

38 500

43 700

44 800

47 50048 500

51 000

90 300

20 000

24 400

26 900

31 300

49 900

53 500

60 000

66 900

70 900

78 20082 100

89 400

158 000

12 000

10 000

9 000

8 000

7 000

6 500

5 500

5 500

4 500

4 5004 000

4 000

3 500

LRBZ 61016 B

LRBZ 81216 B

LRBZ 101416 B

LRBZ 121616 B

LRBZ 141820 B

LRBZ 162020 B

LRBZ 182220 B

LRBZ 202420 B

LRBZ 222620 B

LRBZ 242820 BLRBZ 243020 B

LRBZ 263220 B

LRBZ 283628 B

BRI … UU


BC

D d Fw Da

ra

ra

da

D


D


With Seal, With Inner Ring, Inch Series

Shaft dia. 50.800−82.550mm


min-1


(1)

Standard mounting dimensionsmm

Min. Max.

DaMax.

ras maxda


C

N


C0

N

Notes(1)　　Maximum permissible corner radius of the shaft or housing 　　 (2)　　Allowable rotational speed applies to grease lubrication.Remarks1.　The inner ring and the outer ring each have an oil groove and an oil hole. 2.　 Bearings are provided with prepacked grease. 3.　If one side sealed type are needed, please contact IKO.

Shaft dia.mm

(inch)


g


d D C B Fw

50.800（2）57.150

（21╱4）63.500

（21╱2）69.850

（23╱4）76.200（3）82.550

（31╱4）

BRI 325228 UU

BRI 365628 UU

BRI 406028 UU

BRI 446828 UU

BRI 487232 UU

BRI 527632 UU

889

980

1 065

1 421

1 738

1 851

50.800（2 ） 82.550（3 1╱ 4）

57.150（2 1╱ 4） 88.900（3 1╱ 2）

63.500（2 1╱ 2） 95.250（3 3╱ 4）

69.850（2 3╱ 4） 107.950（4 1╱ 4）

76.200（3 ） 114.300（4 1╱ 2）

82.550（3 1╱ 4） 120.650（4 3╱ 4）

44.450（1 3╱ 4）

44.450（1 3╱ 4）

44.450（1 3╱ 4）

44.450（1 3╱ 4）

50.800（2 ）

50.800（2 ）

44.700

44.700

44.700

44.700

51.050

51.050

63.500（2 1╱ 2）

69.850（2 3╱ 4）

76.200（3 ）

82.550（3 1╱ 4）

88.900（3 1╱ 2）

95.250（3 3╱ 4）

With two seals

58

65

71

77

83.5

91

61

67

73

79

86

93

74.3

80.7

87.0

99.7

106.1

111.4

1.5

1.5

1.5

1.5

1.5

1.5

94 600

98 700

105 000

109 000

142 000

148 000

174 000

189 000

211 000

227 000

265 000

287 000

3 000

2 500

2 500

2 500

2 000

2 000

LRBZ 324028 B

LRBZ 364428 B

LRBZ 404828 B

LRBZ 445228 B

LRBZ 485632 B

LRBZ 526032 B

BRI … UU

BC

D d Fw Da

ra

ra

da

D

D75 D76

■ Structure and featuresC-Lube Machined Type Needle Roller Bearing is a bearing that is lubricated with a newly developed thermosetting solid-type lubricant. A large amount of lubricating oil and fine particles of ultra high molecular weight polyolefin resin are solidified by heat treatment to fill the inner space of the bearing. As the bearing rotates, the lubricating oil oozes out onto the raceway in proper quantities, maintaining the lubrication performance for a long period of time.C-Lube Machined Type Needle Roller Bearings are bearings with a low sectional height and large load ratings. The outer ring has high rigidity and can easily be used even for light alloy housings.

■ FitThe recommended fits for C-Lube Machined Type Needle Roller Bearings are shown in Tables 21 to 23 on pages A41 and A42.

■ Allowable Rotational SpeedThe allowable rotational speed of C-Lube Machined Type Needle Roller Bearing is affected by mounting and operating conditions. The reference dmn value (1) is 20,000.

Note(1)　dmn value = {(Bore diameter of bearing [mm] + Outside diameter of bearing [mm])/2} x rotational speed [min-1]

■ AccuracyC-Lube Machined Type Needle Roller Bearings are manufactured based on JIS (See page A31.). The tolerances for the smallest single roller set bore diam-eter of bearings without inner ring are based on Table 14 on page A33.

■ TypeC-Lube Machined Type Needle Roller Bearing is available in type shown in Table 1.

■ Identification numberThe identification number of C-Lube Machined Type Needle Roller Bearing consists of model code, dimen-sions and classification symbol. Example is shown below.

■ Mounting

■ Precaution for Use

■ LubricationAs the internal space of C-Lube Machined Type Needle Roller Bearing is filled with thermosetting solid-type lubricant C-Lube, regreasing is not possible due to the structure.

■ Oil holeTable 2 shows the number of oil holes on the outer ring.

TAF 12 1219 P6 /SGModel code Dimensions Model code

Type of bearing

（12mm）

（19mm）

Accuracy class (Class 6)

Bearing width

Nominal outside diameter

Example of identification number

Classification symbol

Roller set bore diameter（12mm）

TAF…/SG(1)

Structure of C-Lube Machined Type Needle Roller Bearing

Cage

Needle roller

Outer ring

Table 2 Number of oil holes of outer ring

Nominal roller set bore diameterFwmm

Number of hole holes of outer ring

Fw≦26 26＜Fw

0

1Remark　 If there is oil hole on the outer ring, care must be

exercised not to let oil holes within the load range.

Table 1 Type of bearing

Type

Series

Metric series For light duty TAF･･･/SG

Needle bearing with cage

Without inner ring

1 Mounting dimensions for C-Lube Machined Type Needle Roller Bearings are shown in the table of dimensions.

2 When mounting, pay special attention to avoid locating the oil hole within the loading zone. This may lead to a short bearing life.

1 Do not wash C-Lube Machined Type Needle Roller Bearing with organic solvent and/or white kerosene, which have the ability of removing fat nor leave them in contact with the above agents.

2 To ensure normal rotation of the C-Lube Machined Type Needle Roller Bearing, apply a load of 1% or over of the dynamic load rating at use.

3 The operating temperature range is -15〜+80˚C. For continuous operation, the recommended oper-ating temperature is +60˚C or less.

4 When using two or more C-Lube Machined Type Needle Roller Bearings adjacent to each other on the same shaft, it is necessary to obtain an even load distribution. On request, a set of bearings is available, in which bearings are matched to obtain an even load distribution.

Further, C-Lube Machined Type Needle Roller Bearing for food machinery is also available. If need-ed, please contact IKO.

Note(1)　 Thermosetting solid-type lubricant fills inner space of the bearing.

D


D

Shaft dia. 10−45mm

C-LUBE MACHINED TYPE NEEDLE ROLLER BEARINGS

Without Inner Ring

Shaft dia.


Fw D C rs min(1)

TAF … /SGFw＞26

TAF … /SGFw≦26


Da

Max.mm


C

N


C0

N

TAF 101712/SGTAF 101716/SG

TAF 121912/SGTAF 121916/SG

TAF 142216/SGTAF 142220/SG

TAF 152316/SGTAF 152320/SG

TAF 162416/SGTAF 162420/SG

TAF 182616/SGTAF 182620/SG

TAF 192716/SGTAF 192720/SG

TAF 202816/SGTAF 202820/SG

TAF 212916/SGTAF 212920/SG

TAF 223016/SGTAF 223020/SG

TAF 243216/SGTAF 243220/SG

TAF 253316/SGTAF 253320/SG

1114.7

12.516.8

2227.5

23.529

2430

26.533

2835.5

28.537

3037.5

3139

3342

3543.5

10

12

14

15

16

18

19

21

22

24

25

20

Note(1)　　 Minimum allowable value of chamfer dimension r.Remarks1.　 Models with a nominal roller set bore diameter Fw of 26mm or less are provided without oil holes. other models are provided with

one oil hole and oil groove. 2.　This bearing can not be re-lubricated as thermosetting solid-type lubricant C-Lube fills inner space of the bearing.

Mass (Ref.)

g


1010

1212

1414

1515

1616

1818

1919

2020

2121

2222

2424

2525

1717

1919

2222

2323

2424

2626

2727

2828

2929

3030

3232

3333

1216

1216

1620

1620

1620

1620

1620

1620

1620

1620

1620

1620

0.20.2

0.30.3

0.30.3

0.30.3

0.30.3

0.30.3

0.30.3

0.30.3

0.30.3

0.30.3

0.30.3

0.30.3

15.415.4

1717

2020

2121

2222

2424

2525

2626

2727

2828

3030

3131

5 8808 230

6 6109 250

11 70014 800

12 30015 600

12 30015 500

13 40017 000

14 00017 700

13 90017 600

14 40018 200

14 90018 900

15 30019 400

15 80020 000

5 9709 190

7 26011 200

13 70018 600

14 90020 200

15 10020 400

17 50023 600

18 70025 300

18 80025 400

20 00027 100

21 20028 700

22 50030 500

23 70032 100

Shaft dia.


Fw D C rs min(1)


Da

Max.mm


C

N


C0

N

TAF 293820/SGTAF 293830/SG

TAF 304020/SGTAF 304030/SG

TAF 354520/SGTAF 354530/SG

TAF 405020/SGTAF 405030/SG

TAF 455520/SGTAF 455530/SG

59 88

67101

76.5116.5

86130

95.5144

29

30

35

40

45

Mass (Ref.)

g


2929

3030

3535

4040

4545

3838

4040

4545

5050

5555

2030

2030

2030

2030

2030

0.30.3

0.30.3

0.30.3

0.30.3

0.30.3

3636

3838

4343

4848

5353

21 60030 900

25 10036 000

26 90038 600

29 40042 300

31 00044 600

37 20059 100

40 10063 900

46 20073 600

54 10086 200

60 20095 800

C

r

r

D Fw

C

r

r

D Fw Da

Documents

Structure and Features - IKO International · Table 2 Accuracy of inner and outer rings of inch series BR and BRII d or D Nominal bearing bore dia. or outside dia. mm ∆ dmp Single