Fluidex Fluid Couplings

Fluidex Fluid Couplings http://www.ckit.co.za/Secure/Catalogues/Flender/Fludex/Fludex%20...

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FLUDEX Fluid CouplingsPrint

Features and field of applications

FLUDEX couplings are hydrodynamic fluid couplings operating according to the Föttinger principle.Coupling parts on input- and output side are not mechanically connected and thus not subject to wear.Torque is transmitted by the rotating oil fluid of the couplings accelerated by the radial blades. FLUDEXcouplings have the same characteristics as turbines. Torque increases with the second power andpower capacity is proportional to the third power of input speed. During stationary torque transmissionlittle operating slip occurs.

Hydrodynamic torque transmission with the FLUDEX coupling shows the following advantages:

Soft starting without shock loads of machines and conveyor equipment;

Acceleration of great masses without the necessity for over dimensioned motors;

Load relieved and faster motor start as torque is proportional to the second power of motorspeed. Negligible heating-up of motors as the high starting current is only drawn for a shorttime;

Starting of heavily loaded machines by induction motors also with low characteristic motor curve(voltage drop, high voltage motors) by utilising the motor pull-out torque;

Torque limitation for starting conveyor belts; torque adaptation to belt loading by the reservoircoupling;

Overload limitation in case of a drive blockage; (bucket wheel drives, mixer drives) onexceeding maximum torque the torque characteristic drops, no motor stalling;

Torque is transmitted without wear as input - and output side are not mechanically connected; -

Excellent vibration separation and shock - damping; greatest possible extent of torsionalvibration uncoupling in drives subject to vibration (PTO drives, diesel engine drives);

Drive protection against load peaks in frequent starting and reversing operation;

Load compensation in multi-motor drives by ability to slip and variation in filling level; staggeredstarts of motors to reduce starting torques and avoid simultaneous starting current peak powerdemands;

Small operating slip of couplings at nom. load;

Simple adjustment of transmittable torque by varying the fluid level;

Protection for fluid filling in case of overload is possible through electronic and mechanicalthermal control devices;

For underground mining applications, water as operating medium is possible in a modifiedcoupling design.

The excellent qualities of FLUDEX couplings are utilised over a wide field of applications. Among others,they are being used on:

Hoisting equipment, conveyor belts, loading plants, processing equipment, bucket + chain conveyors,bucket wheel drives, breakers, auxiliary drives for mills, roll presses, drum drives, separator drives,fans, blowers, wind machines, mixers, agitators, kneaders, centrifuges, pumps, decanting machines,compressors, generator drives (PTO), marine drives, shredders, extruders, revolving drives, vehicledrives

FLUDEX couplings type FA, FG, FV and FN are available for power ratings up to 1900 kW in 16 wellgraded sizes, which, in combination with BLAURI wedge belt drives, flexible N-EUPEX couplings andbrakes drums, offer a wide variety of installation possibilities.


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Design and operating principle

FLUDEX couplings consist of only a few sturdily built components: the splined hollow- or solid shaft(part 6) on which the impeller (5) is assembled. The outer housing is formed by the cover (2) and theblade wheel housing (1) connected by a bolted flange joint. Outer housing and hollow shaft has doublebearing support and are sealed off to the outside by shaft seals. In order to compensate for thedifferent thermal expansion properties of aluminium housing and outer bearing rings, pre-tensionedO-rings are mounted as torsional safeguard. The housing is provided with two filler plugs (4) withintegral overfilling protection and two fusible safety plugs (3) against overheating. The fusible plugscan be used also as fluid drain plugs and can be utilised as filling level control with the aid of a scalemarking on the housing.

In case of blockage or overload condition of the driven machine the coupling warms up until themelting temperature of the fuse is reached.

The fluid is then discharged and the prime mover isolated from the blocked drive train, preventingpossible destruction of the coupling through overheating or over-pressure. Fluid discharge can beprevented by fitting electronically or mechanically controlled monitoring devices.

FLUDEX couplings can be filled up to max. 80 - 85 % of their volume (limitation by overflowprotection). Excessive fillings result in a strong pressure built-up within the coupling due to theincreased temperature-dependent volume expansion of oil which can lead to destruction (breakingopen) of the coupling before reaching the response temperature of the fusible safety plugs.

Type FA

FLUDEX couplings type FA are suitable for both directions of rotation and can be installed horizontally,inclined or in vertical position. Input- and output sides are optional but preference should be given toinput through hollow shaft and impeller so as to utilise fully the advantages of compensating chamber(7) and working chamber geometry.

FLUDEX couplings operate to the Föttinger principle. When input through the hollow shaft, the impelleracts as a pump and the blade wheel housing as a turbine. The impeller with its radial blades driven bythe motor produces fluid acceleration in outward direction. The flow energy of the fluid is transformedagain into mechanical power through the blade wheel housing on the output side and is transferred tothe driven machine via flexible coupling (9) or a V-belt pulley (10). The rotational fluid flow necessaryfor torque transmission necessitates little operational lag on the turbine side (slip). Power capacity of afluid coupling related to the amount of slip is proportional to the third power of input (impeller) speed,dimension of effective coupling diameter (fifth power), and fluid filling (mass of effective fluid).

As the torque transmission capacity of the coupling is also influenced by the fluid�s viscosity, onlythin-bodied hydraulic oils (VG 22/VG 32) are being used.

When the motor has run up to speed during which the torque capacity increases with the second powerof speed, FLUDEX couplings limit the torque to the driven machine. The amount of torque limitation isadjusted by the coupling�s oil filling. On starting, due to the maximum rotational flow at max. slip, partof the oil filling is forced into the radial internal spaces, filling the compensating chamber (7). Thisreduces the effective oil volume in the working chamber, achieving the desired torque limitation onstarting.

By fitting additional components (throttle plates and dam rings), the torque can be limited to 1.4 - 1.5times the nominal motor torque with corresponding part filling. After run-up to speed, thecompensating chamber empties itself again, the fluid returning to the working chamber withsubsequent reduction of the operating slip.

The following designs and sizes of FLUDEX couplings, type PA, are on offer:

FAK 222 - 342 with flexible N-EUPEX coupling

FAKB 222 - 342with flexible N-EUPEX coupling and brake drum


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FAD 395 - 590with flexible N-EUPEX coupling

FADB 395 - 590with flexible N-EUPEX coupling and brake drum

FAO 222 - 590flange mounting

FAR 222 - 590couplings with BLAURI V-belt pulley

FAHF 222 - 590couplings with bush flange

Type FG and FV

FLUDEX couplings type PG and FV are speciality designed for preferred input through the blade wheelhousing. In type FV with delay chamber the motor drives the coupling housing consisting of bladewheel housing (1) and cover (2) through N-EUPEX coupling (9) and delay chamber (7). The rotationalforce of fluid transfers the torque to impeller (5) and hollow shaft on the output side that is assembledto the gear- or driven machine shaft. In the basic design of type FG, the delay chamber has beenomitted and the flexible coupling is flange-mounted directly to the blade wheel housing. The coupling isfurnished with 2 fusible safety plugs (3) and 2 filler plugs (4) with integral overflow protection.

On starting of the coupling, part of the oil filling is forced into the damning chamber (10) due to thestrong rotational flow and geometry of the working chamber, resulting in torque limitation. In type FVwith delay chamber, this chamber takes part of the fluid filling, corresponding to the filling level of astationary coupling. On starting, the effective fluid quantity within the working chamber (8) is reducedby the amount of fluid in the delay chamber and thus clearly reducing the starting torque. Fluid fromthe delay chamber, located on the input side, is returned, time-controlled, through small holes to theworking chamber, hereby increasing the coupling�s torque even with a blocked output side.

With this replenishing features, a drive can be started with a very reduced starting torque and almostunloaded motor. At the same time increased load torques can be overcome by the torque increase inthe coupling.

The characteristics of the delay chamber coupling can be used advantageously for instance to soft-startempty, part loaded and loaded conveyor belts.

The coupling torque adapts itself to the occurring load torque of the drive and brings about soft startingof masses. Fig. 8.1 on page 8 shows schematically the torque reduction of a coupling with delaychamber, type FV and FN, compared with the basic design coupling PG. By mounting a delay chambercoupling-starting torques can be adjusted to below 1.4 - 1.5 times the nom. motor torque with littleslip.

Type FG couplings are applied for normal starting torque limitation, as starting couplings for thepurpose of separating vibrations and to limit overloads in the event of a drive blockage. FLUDEXcouplings type PG can protect against over loadings in case of blockage to a maximum of 1.5 times theoperating torque at justifiable slip and allowable coupling temperature. However, this overloadapplication requires partial filling with reduced power transmission capacity of the coupling.

The following designs and sizes of FLUDEX couplings, type PG and FV are available:


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FGD 297 - 1020with flexible N-EUPEX-D coupling

FVD 370 - 1020

FGM 370 - 755close design with flexible N-EUPEX-M coupling

FVM 370 - 755

FGO 370 - 1020basic coupling and delay chamber coupling with connecting flange

FVO 370 - 1020

FGDB 370 - 755with flexible N-EUPEX-D coupling and brake drum

FVDB 370 - 755

Type FN

The FLUDEX coupling type FN is a delay chamber coupling in which the delay chamber (7) has beendesigned as hub carrier and is mounted on the motor shaft. The hub carrier is flanged to the housing(1; 2) of the FLUDEX coupling. Output is through impeller (5) and shaft (6) to the torsionally flexibleN-EUPEX coupling (9), which connects to the gear unit or driven machine. Type FNDB is supplied withbrake drum design P or the more compact A design on the output side. The brake drum design Pfacilitates radial disassembly of the hydraulic coupling part without the necessity to move the motor.

FLUDEX couplings type FN are exclusively driven through the housing part. The delay chamber is hereenlarged as compared with type FV enabling softer starting. The great advantage of this coupling lies inthe weight distribution of couplings with brake drums.

The usually stronger motor shaft takes the weight of delay chamber (cast iron design) and hydraulicpart of the coupling, the gear shaft carries the brake drum and the output side of the flexible coupling.At the same time, the principle is retained of delay chamber on the input side with the ability toincrease the torque time controlled. Coupling type FNDB avoids bending vibration-and bearingproblems which can occur on the gear shaft, specially of bevel-helical gear units and at high speeds,when brake drum and coupling are mounted together on the gear shaft.

Fields of application for FN-couplings are the same as for FV-types, offering, however, specialadvantages in the brake drum design because of the weight distribution.

For overload safeguards in case of a drive blockage it is possible not to use the delay chamber functionof the hub carrier.

The following designs and sizes of FLUDEX couplings type FN are available:

FNO 370 - 1020 coupling with journal for connecting couplings

FND 370 - 1020 with flexible N-EUPEX-D coupling

FNDB 370 - 1020 with flexible N-EUPEX-D coupling and brake drum, design P or A

Selection of size

A reliable choice of the most suitable type and determination of the most favourable size is onlypossible if all aspects of the drive, load conditions and ambient influences the FLUDEX fluid coupling willbe exposed to in service, are correspondingly considered.


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Please peruse the following technical data, it will help to eliminate errors and avoid time-consumingqueries when ordering.

1. Application of the FLUDEX fluid coupling

1.1 As starting aid. 1.2 For overload protection. 1.3 To separate vibrations or damp shocks.

2. Description of prime mover

2.1 Type of prime mover. 2.2 Power rating P1 in kW, operating speed n1 in r.p.m.2.3 For electric motors: direct on line or star-delta starting. If star-delta starting, please statecommutation time and required current limitation. Concerning this the customer should providecharacteristic motor curves. 2.4 For internal combustion engines: state speeds and torques when idling and at full load operation,max. permissible drag torque of the coupling at idling speed (starting speed).

3. Description of the driven machine

3.1 Type of driven machine. 3.2 Power rating P2 in kW, operating speed n2 in r.p.m. 3.3 Max. torque T2 in Nm, load torque cycle T2/n2 (characteristic load curve). 3.4 Desired torque limitation by the coupling (starting/stalling).

4. Load conditions of prime mover- and driven machine

4.1 Uniform- or shock loads. 4.2 Moment of inertia J in kgm2 of driven machine. 4.3 No. of starts per hour (working cycles, operating time under load). 4.4 Frequency and duration of peak loads above the design rating (nom. rating). 4.5 For loaded reversing operation in both directions: directional changes per hour. 4.6 For counter-flow braking: no. of braking cycles per hour. 4.7 Forces from power transmission elements acting on output side (other couplings, joint shafts etc.).

5. Ambient conditions

5.1 Ambient air temperature, available for cooling. For ambient air temperatures below -20°C andabove 45°C please refer to office. 5.2 Influence of radiated heat (sun, ovens, combustion engine) and thermal conduction through pipes.Max. temperature influence on coupling in °C. 5.3 In case of lantern mounting: a) open lantern with good ventilation b) partly closed lantern, Less well ventilated c) closed lantern without or only very little air exchange. 5.4 If mounted under protective cover: a) open cover, well ventilated b) partly closed cover, less well ventilated c) closed cover (sound cover) with or without separate ventilation. 5.5 Influence of very dusty or corrosive surroundings. 5.6 Vibrational stress on coupling through prime mover or driven machine.

6. Layout of drive

6.1 Position of input (motor) shaft a) Horizontal b) Inclined, for angles up to 20° please state motor position (motor on top or motor at the bottom). c) Vertical, or for angles > 20° please state motor position (motor on top or motor at the bottom). Forcouplings with delay chamber, the delay chamber and thus the motor must be at the bottom, asotherwise the delay chamber would be ineffective (no torque-limiting effect on starting). 6.2 Drive direction of coupling a) Drive (input) via impeller, favoured drive direction of types PA.. b) Drive (input) via housing (blade wheel housing), favoured drive direction of types FG.., FV.. and FN..

Delay chamber couplings that act as torque increasers by being fed from the delay chamber, alwaysrequire input via the housing (primary delay chamber). 6.3 For belt pulley couplings type FAR which are not mounted on the motor shaft, details of n2 speedmust be given (ratio of primary V-belt drive).


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7. special requirements

Special requirements over and above standard design regarding technical specifications

bore Limits

keys

balance quality

axial fastening of hollow shaft/hub.

8. Determination of coupling type and size

8.1 The coupling size is determined according to the effective power rating of the driven machine fromthe speed depending non, power ratings listed in tables 12.I and 12.II. The size selection is determinedby the desired direction of rotation (impeller/housing), the design and the torque limitation on starting.For specially low overload requirements on starting, delay chamber couplings should be preferred.Regarding couplings with brake drums, weight distribution among motor- and machine shaft must benoted. Here, type FNDB offers itself as a favourable solution of a delay chamber coupling. 8.2 Power ratings listed in tables are, as a rule, based on a max. allowable fluid filling of 80 - 85 %. Incase a very low overload capacity is desired, partial filling becomes necessary specially in couplingswithout delay chamber, whereby listed power ratings cannot be fully utilised and the next size upcoupling may have to be chosen. Refer to office, if necessary. 8.3 Maximum bore diameters of the hollow shaft (part 6) have been assigned to the correspondingshaft diameters of motors at n = 1500 r.p.m. When using larger motors, the fluid coupling may have tobe mounted on the gear shaft (drive via housing) or coupling types with input through housing mayhave to be selected.

9. Thermal check

The temperature of the fluid coupling rises due to slip that occurs subject to transmitted power, speedand oil filling. Nan. power ratings listed in tables 12.1 and 12.11 are based on a design slip of 3 - 5 %(depending on size) and heat generation in the coupling up to 50°C. A thermal check and reference tothe office with detailed technical data will be necessary: a) if ambient temperature exceeds 45°C, b) in case of more than 6 starts/h, c) if large masses have to be accelerated and the starting time exceeds 30 seconds at input n1 < 1770r.p.m. or starting time exceeds 15 seconds at n1 > 1770 r.p.m., d) if good ventilation of the coupling cannot be guaranteed.

Calculation Examples

Example 1

Required: A FLUDEX fluid coupling for a rubber belt conveyor P1 = 45 kW, n1 = 1475 r.p.m., Design rating of conveyor P2 = 42 kW, Max. starting torque 1.5 x TN, Expected starting time 15 s, 5 starts/h. Motor shaft dia. = 60 m6, gear shaft dia. = 55 m6.

Solution: Coupling FVD 370 is chosen according to table 12.II. The delay chamber coupling gives thespecified overload limitation on starting. The hollow shaft with bore 55 H7 is to be mounted on the gearshaft, part 2 of the flexible N-EUPEX coupling on the motor shaft.

Example 2

Required: A FLUDEX fluid coupling for the drive of a bucket wheel excavator with torque limitation of1.6 x TN in case of a blockage, P1 =750kW, n1 = 960 r.p.m., Installation inclined 2° - 50°, Ambient temperature 16 - 42°C, Motor connection via joint shaft, Gear shaft dia. = 140 m6, thermal monitoring.


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Solution: Coupling FGO 887 corresponding to table 12.II with input through housing, includingintermediate flange for joint shaft connection is chosen. The hollow shaft dia. 140 H7 is to be mountedon the gear shaft. For thermal monitoring purposes 125°C the non-contacting EOC system is to beapplied. The thermal check has shown that the 1.6-fold overload Limit will be reached at 3.5 % slipand a temperature rise in the coupling to 55°C.

Example 3

Required: A FLUDEX fluid coupling for a press drive P1 =75kw, n1 = 1480 r.p.m., Design rating of press P2 = 60 kW, Expected starting time 30 s, 15 starts/h, Motor and gear shaft dia. = 75 m6, impeller to be the driving member.

Solution: Since the Impeller is specified as driving member, type FAD is chosen. Although according totable 12.I size 395 is large enough, size 450 must be selected, as size 395 would heat up too muchwith the expected starting time of 30 s and starting frequency of 15/h, additionally, both shaftdiameters are greater than the max. bore 65 H7 of the hollow shaft (part 6) of size 395.

Nominal power ratings

Since a certain amount of experience is required to determine a suitable coupling size, we shall bepleased to submit proposals based on the "Technical Specifications" (page 9).

12.I Speeds and nominal power ratings type FA..

Speedrpm

Coupling Size

222 257 297 342 395 450 516 590

Nominal power ratings PN in kW

600 -- -- 1,2 2,6 5,7 11 19 37

740 -- 1,1 2,3 4,8 10 21 36 69

890 1 2 4 8,7 16 32 60 109

980 1,3 2,8 5,5 11,5 21 41 75 134

1180 2,4 4,8 9 18 36 65 115 200

1350 3,6 7,1 14 27 49 90 154 260

1470 4,4 9,3 18,5 34 61 110 190 320

1600 5,8 12 23 40 74 127 215 360

1770 7,8 16 29 51 87 155 260 435

2000 11 21 37 65 105 190 310 540

2300 15 28 48 82 135 230 395 --

2600 19 35 60 97 165 290 -- --

2950 24 44 70 120 215 370 -- --

3550 33 60 90 145 -- -- -- --

Nominal power ratings for speeds > 3550 rpm upon inquiry

12.II Speeds and nominal power ratings type FG.., FV.., FN..

Speedrpm

Coupling Size

370 425 490 565 655 755 887 1020

Nominal power ratings PN in kW

600 4 7,5 15 28 55 110 240 480

740 7,5 15 30 55 110 210 440 850

890 12 23 45 85 170 330 700 1160

980 16 30 58 110 220 440 810 1380


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1180 26 48 95 180 350 600 1130 1900

1350 38 70 140 255 450 760 1440 --

1470 48 90 180 300 520 870 1660 --

1600 61 115 210 350 600 1010 -- --

1770 85 140 245 420 730 1220 -- --

2000 110 175 300 525 900 -- -- --

2300 140 220 380 660 -- -- -- --

2600 170 280 480 -- -- -- -- --

2950 220 340 -- -- -- -- -- --

3550 290 -- -- -- -- -- -- --

FLUDEX couplings for IEC motors

Three-phase motors with squirrel cage rotor according to DIN 42673/1, issue April 1983.

This arrangement is reliable for normal loadings; the notes on page 10 should be observed regarding temperature rise of the coupling.

Power ratings PM of IEC motors and associated FLUDEX couplings

Three phase motorSize

PMat

3000 rpm kW

FLUDEX coupling

FARSize

BLAURI pulley *FLUDEX coupling FAK F.D

Size

PMat

1500 rpm kW

FLUDEX coupling

FARSize

BLAURI pulley *FLUDEX coupling FAK F.D

Size

PMat

1000 rpm kW

Profile Section

dwmm

No. of grooves

Profile Section

dwmm

No. of grooves

80 0,751,1

222222

SPZSPZ

100100

22

222222

0,550,75

222222

SPZSPZ

100100

22

222222

0,370,55

90 S 1,5 222 SPZ 100 2 222 1,1 222 SPZ 100 2 222 0,75

90 L 2,2 222 SPZ 100 2 222 1,5 222 SPZ 100 2 222 1,1

100 L 3 222 SPZ 100 2 222 2,23

222222

SPZSPZ

100100

22

222222

1,5

112 M 4 222 SPZ 100 2 222 4 257 SPZ 125 4 257 2,2

132 S 5,57,5

257257

SPZSPZ

125125

44

257257

5,5 257 SPZ 125 4 257 3

132 M 7,5 257 SPZ 125 4 257 45,5

160 M 1115

257257

SPZSPZ

125125

44

257297

11 297 SPZ 140 5 297 7,5

160 L 18,5 297 SPZ 140 5 297 15 297 SPZ 140 5 297 11

180 M 22 297 SPZ 140 7 342 18,5 342 SPA 180 5 342

180 L 22 342 SPA 180 5 342 15

200 L 3037

342342

SPASPA

180180

55

342342

30 342 SPA 180 5 342/370 18,522

225 S 37 395 SPB 224 5 395/370

225 M 45 342 SPA 180 5 342 45 395 SPB 224 5 395/370 30

250 M 55 342 SPA 180 7 395/370 55 395 SPB 224 5 395/425 37

280 S 75 395 SPB 224 5 395/370 75 450 SPB 250 8 450/425 45

280 M 90 395 SPB 224 7 395/370 90 450 SPB 250 8 450/425 55

315 S 110 395 SPB 224 7 395/370 110 516 SPB 315 10 516/490 75


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315 M 132 450 SPB 250 8 395/370 132 516 SPB 315 10 516/490 90

* Observe the peripheral speed rating of BLAURI pulleys, when v ≥ 26m/sec., they have to bedynamically balanced

# Always with the corresponding smallest number of grooves (see page 18)

Fitting dimensions of IEC motors

Three phase motor

h a b W1s

d x l DIN

748/1at 3000& 1500

rpm

Three phase motor

h a b w1s

d x l DIN 748/1 at

3000 rpm

1500 rpm

Size mm mm mm mm mm Size mm mm mm mm mm mm

80 80 100 125 50 M8 19 x 40 180 L 180 279 279 121 M12 48 x 110

90 S 90 100 140 56 M8 24 x 50 200 L 200 305 318 133 M16 55 x 110

90 L 90 125 140 56 M8 24 x 50 225 S 225 286 356 149 M16 55 x 110

60 x 140

100 L 100 140 160 64 M10 28 x 60 225 M 225 311 356 149 M16 55 x 110

60 x 140

112 M 112 140 190 70 M10 28 x 60 250 M 250 349 406 168 M20 60 x 140

65 x 140

132 S 132 140 216 89 M10 38 x 80 280 S 280 368 457 190 M20 65 x 140

75 x 140

132 M 132 178 216 89 M10 38 x 80 280 M 280 419 457 190 M20 65 x 140

75 x 140

160 M 160 210 254 108 M12 42 x 110 315 S 315 406 508 216 M24 65 x 140

80 x 170

160 L 160 254 254 108 M12 42 x 110 315 M 315 457 508 216 M24 65 x 140

80 x 170

180 M 180 241 279 121 M12 48 x 110

Finish bored N-EUPEX coupling parts for type FAK

Design: Bore tolerance range to ISO H7, keyway to DIN 6885/1. keyway width tolerances to ISO P9,tapped hole for setscrew in sizes 222 and 257 located opposite to keyway.

Type FAO for flange mounting


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Speeds nmax, dimensions, moments of inertia J and weights

FLUDEX FAO 1)

Size

Speed nmax

da

Bore D

l1l1

maxl3 a

Fitting dimensions Moment of inertia J 2) Weight

2)From To

d1j7

d2 kk s No. of

t z Inner parts

Outer parts

rpm mm mm mm mm mm mm mm mm mm mm mm mm mm kgm2 kgm2 kg

222 3550 263 19 28 40 60 112 2 95 148 128 M8 6 12 3 0,013 0,060 8,2

257 3550 298 22 38 55 80 120 0 110 170 150 M8 6 12 3 0,022 0,11 12,5

297 3550 340 22 42 55 110 150 2 125 195 172 M8 6 12 3 0,049 0,22 16,5

342 3550 400 30 55 65 110 180 2 140 230 205 M10 8 12,5 4 0,097 0,49 27

395 3150 448 38 65 80 140 205 0,5 225 290 265 M12 8 15 4 0,17 0,83 36

450 3000 512 42 75 90 140 233 1 250 310 285 M12 8 15 4 0,36 1,5 52

516 2500 584 65 90 110 170 270 2 315 390 360 M16 8 20 5 0,73 2,5 72

590 2240 662 65 100 120 210 305 2 315 390 360 M16 8 20 5 1,3 4,5 105

1) Replacements for previous sizes 678, 774, 887 and 1020 of type FAO are still available on request. 2) Mass moments of inertia J (including the portions due to the power transmitting oil quantity) andweights (without oil) are valid for couplings with medium sized bores. Axial fixing with retaining screws (part of delivery), suitable for shaft ends to DIN 748 with tappedcentering holes to DIN 332 sheet 2, form DS (seepage 32). Different requirements must be statedwhen ordering.

Type FAK with N-EUPEX coupling Type FAKB with N-EUPEX coupling and brake drum

See Finish bore couplings for couplings available from stock


FLUDEX FAK / FAKB size

Speed nmax

da

Bore

l1l1

maxl2 l3 L4 L5 s d1 d2

Brake drum 2)

D1 D2 D3d3 b

from to from to from to

rpm mm mm mm mm mm mm mm mm mm mm mm mm mm mm mm mm mm mm

222 3550 263 19 28 11 42 11 38 40 60 35 112 97 50 3�4 95 68 200 75

257 3550 298 22 38 14 48 1624

2455

55 80 40 120 100 4275

3�4 110 78 200 75

297 3550 340 22 42 16 55 1624

2455

55 110 50 150 104 4275

3�4 125 90 200 75

342 3550 400 30 55 18 60 1838

3860

65 110 55 180 127 6295

3�4 140 100 250 95

FLUDEXFAK / FAKB size

Moment of inertia J 1) Weight 1) Oilqty. maxInner parts Outer part Part 1 Part 8/10 FAK FAKB

kgm2 kgm2 kgm2 kgm2 kg kg l

222 0,013 0,06 0,0009 0,04 9,1 16 1,65

257 0,022 0,11 0,002 0,044 14 2120,5

2

297 0,049 0,2 0,004 0,05 19 25,525

4,2


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342 0,097 0,46 0,007 0,13 31 4645,5

6,6

1) Mass moments of inertia J (including the portions due to the power transmitting oil quantity) andweights (without oil) are valid for couplings with medium sized bores. 2) Observe peripheral speed of brake drum (dynamic balancing is necessary, when v ~ 26 in/sec.,nodular cast iron material for v ~ 40 in/sec.)

Axial fixing with retaining screws (part of delivery), suitable for shaft ends to DIN 748 with tappedcentering holes to DIN 332 sheet 2, form OS (see page 32). Different requirements must be statedwhen ordering.

Type FAD with N-EUPEX coupling Type FADB with N-EUPEX coupling and brake drum

See Finish bored couplings for couplings available from stock


FLUDEXFAD / FADB

size 1)

Speed nmax

da

Bore

l1l1

maxl2 l3 l4 l5 s d1 d2

Brake drum 3)

D1 D2 D3d3 b

from to from to from to


395 3150 448 38 65 24 85 24 80 80 140 90 204,5 153 118 3�6 225 138 315 118

450 3000 512 42 75 28 95 24 80 90 140 100 232 157 118 3�8 250 155 315 118

516 2500 584 65 90 48100

100120

45 100 110 170 125 268 193 150 3�8 315 165200

400 150

590 2240 662 65 100 60100

100120

50 110 120 210 125 303 232 190 3�8 315 165200

500 190

FLUDEXFAD / FADB size 1)

Moment of inertia J 2) Weight 2) Oilqty. maxInner parts Outer part Part 2/3 Part 3/13 FAD FADB

kgm2 kgm2 kgm2 kgm2 kg kg l

395 0,17 0,83 0,08 0,37 51 67 9,5

450 0,36 1,5 0,13 0,41 72 85 13,4

516 0,73 2,5 0,330,37

1,23 104106

134 22,7

590 1,3 4,5 0,330,37

3,03 136138

195 33

1) Replacements for previous sizes 678, 774, 887 and 1020 of types FAD and FADB are still availableon request.

2) Mass moments of inertia J (including the portions due to the power transmitting oil quantity) andweights (without oil) are valid for couplings with medium sized bores.

3) Observe peripheral speed of brake drum (dynamic balancing is necessary, when v > 26 m/sec.,nodular cast iron material for v > 40 m/sec.)


Type FAR with BLAURI V-belt pulley


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Type FAHF with adaptor

Speeds nmax and dimensions

FLUDEX FAD / FADB

size 1)

Speed nmax

da

Bore Pulley 2) 3)

No. of grooves

d1m6

Adaptor 3)

l1l1

maxl3 a1 a2 b2D1

dwSection

tKeywayb x h x

l4from to

rpm mm mm mm mm mm mm mm mm mm mm mm mm mm mm mm

222 3550 263 19 28 100 SPZ 2 90 2,5 6 x 6 x 22

See below

60 153 2 3 28

257 3550 298 22 42 125 SPZ 4 115 3 8 x 7 x 40

110 185 2 5 52

297 3550 340 22 4248

140 SPZ 57

130 3

8 x 7 x 55

8 x 7 x 70

110 230252

53

4 6488

342 3550 400 30 5560

180 SPA 57

160 3

10 x 8 x 55

10 x 8 x 95

110140

278311

47

5 80110

395 3150 448 38 6575

224 SPB 57

200 3,5

14 x 9 x 80

14 x 9 x 100

140 325363,5

3,54

5 101139 16,5

450 3000 512 42 7580

250 SPB 810

230 4

16 x 10 x 90

16 x 10 x 120

140170

410449

45

5 158196

16,517,5

516 2400 584 65 90100

315 SPB 1012

300 4

18 x 11 x 105

18 x 11 x 135

170210

491527

86

10 196234

20,518,5

590 2240 662 65 100 315 SPC 12 280 4,5 20 x 12 x 165

210 642 5 10 315

2) Associated BLAURI pulleys for speeds of 1500 r.p.m. and 3000 r.p.m., resp., see page 13. 3) Observe peripheral speed of BLAURI pulleys or adaptor (when v > 26 m/sec., they have to bedynamically balanced)

Axial fixing with retaining screws (part of delivery), suitable for shaft ends to DIN 748 with tappedcentering Holes to DIN 332 sheet 2, form OS (see page 32). Different requirements must be statedwhen ordering.

Dimensions, moments of inertia J and weights

FLUDEXFAR /FAHFSize

No. of grooves

Bore D

l1

Moments of inertia J 1) WeightOilqty.maxabove to

FAR FAHFFAR FAHFInner

partsOuter parts

Inner parts

Outer parts

mm mm mm kgm2 kgm2 kgm2 kgm2 kg kg l

222 2

1924

192428

405060

0,013 0,065 0,013 0,065 10,5 10 1,65

257 4 22 38 70 0,023 0,13 0,023 0,13 17 16,5 2


13 of 24 1/17/2007 2:06 PM

297

5242838

24283848

506080

110

0,049 0,23 0,049 0,22 23 22

4,2

7 2428

242848

506080

0,05 0,24 0,05 0,23 25 23,5

3425 38 38

5580

1100,098 0,55 0,098 0,51 43 38

6,6

7 38 3860

80110

0,1 0,57 0,1 0,52 46 40

395

5 3855

385565

80110140

0,17 1 0,17 0,97 58 53

9,5

7 3855

385575

80110140

0,18 1,1 0,18 0,99 69 59

450

8 55 5575

110140

0,37 1,8 0,37 1,7 86 80

13,410 55

68

556880

110140170

0,38 1,9 0,38 1,8 96 86

516

10 75 7590

140170

0,74 3,5 0,74 3,4 135 130

22,712 75

95

7595100

140170210

0,76 3,6 0,76 3,5 140 135

590 12 7595

7595100

140170210

1,4 6,3 1,4 5,6 205 180 33

1) Mass moments of inertia .1 (including the portions due to the power transmitting oil quantity) andweights (without oil) are valid for couplings with medium sized bores.

Dimension l1 referred to BLAURI pulley and bore diameter 0.

Type FGD with N-EUPEX coupling

Type FVD with delay chamber and N-EUPEX coupling


Size

Speednmax

da

Bore

l1l13)

l1max

D3 l5

Bore

l2l2

maxs l3 l4 l6 d1

a 2) G DIN

228/1D1 D2

from to from to


297 3550 340 16 45 50 80 -- 45 80 22 42 55 110 2�4 233 -- 83 125 6

342 3550 400 18 50 55 88 -- 55 88 30 55 65 110 2�4 271 -- 102 140 6

370 3550 420 24 65 70 108 150 72 140 32 75 80 115 2�6 298 341 84 180 10


14 of 24 1/17/2007 2:06 PM

425 3000 470 38 85 90 140 195 88 168 38 80 90 140 2�6 348 403 99 225 9

490 2600 555 32 95 100 158 220 88 186 42 100 110 170 3�8 397 462 105 250 11

565 2300 630 55 105 110 170 250 105 210 48 110 120 170 3�8 430 513 123 280 5 G1 1/2

655 2000 736 65 140 140 210 295 112 250 60 130 130 210 3�8 515 603 145 350 -6 G1 1/2

755 1800 840 70 150 160 230 330 125 270 60 150 170 240 3�8 584 683 176 400 -16 G1 1/2

887 1500 990 80 160 180 260 360 142 310 65 150 180 270 5�10 665 767 179 440 -17 G1 1/2

1020 1250 1125 100 190 210 305 435 142 350 65 150 180 300 5�10 765 895 210 520 -27 G1 1/2

Centres of gravity, moments of inertia J and weight

Size

Type FGD Type FVD

y1 4)

Fy1 4)

Moment of inertia J 1) Weight

1)

Oil qty max

y2 4)

Fy2 4)


1)

Oil qty maxInner

partsOuter parts

Part 2/3

Inner parts

Outer parts

Part 2/3

rpm N kgm2 kgm2 kgm2 kg l mm N kgm2 kgm2 kgm2 kg l

297 84 225 0,049 0,215 0,004 21,8 4,2 -- -- -- -- -- -- --

342 101 365 0,097 0,491 0,007 34,8 6,6 -- -- -- -- -- -- --

370 101 430 0,171 0,664 0,024 44 7,2 110 460 0,171 0,698 0,024 47 8

425 116 600 0,306 1,006 0,08 65 11 128 645 0,306 1,068 0,08 69 12

490 130 920 0,684 2,28 0,13 98 17 144 980 0,684 2,4 0,13 103 18,5

565 139 1250 1,327 3,72 0,2 128 25,5 156 1350 1,327 3,94 0,2 136 28

655 168 2000 2,74 8,89 0,54 205 40 187 2150 2,74 9,35 0,54 215 44

755 193 2800 5,42 16,1 0,9 285 61 213 3030 5,42 16,8 0,9 300 67

887 222 3900 9,88 26,5 1,5 390 98 242 4150 9,88 27,7 1,5 410 107

1020 257 5300 17,5 48 3,2 540 152 283 5690 17,5 50 3,2 570 165

1) Mass moments of inertia J (including the portions due to the power transmitting oil quantity) andweights (without oil) are valid for couplings with medium sized bores 2) Space required for changing flexible elements 3) Max. journal length for radial assembly 4) Weight load at max. oil filling


Type FGM with N-EUPEX coupling

Type FVM with delay chamber and N-EUPEX coupling


Size

Speednmax

da

Bore

l1l1

maxD3 l5

l2max

Bore

l2l2

maxs l3 l4 l6 d1 b1 b2D1 D2

from to from to

rpm mm mm mm mm mm mm mm mm mm mm mm mm mm mm mm mm mm mm mm

370 3550 420 28 70 80 115 72 80 132 32 75 80 115 2�6 274 290 84 180 46 19

425 3000 470 32 85 100 128 88 100 145 38 80 90 140 2�6 310 327 99 225 52 14

490 2600 555 35 90 105 135 88 110 170 42 100 110 170 3�8 350 382 105 250 53 20


15 of 24 1/17/2007 2:06 PM

565 2300 630 38 100 120 155 105 130 200 48 110 120 170 3�8 380 425 123 280 60 22

655 2000 736 42 140 140 180 112 140 220 60 130 130 210 3�8 447 490 145 350 72 27

755 1800 840 48 150 150 190 125 150 235 60 150 170 240 3�8 503 550 176 400 75 39


Size

Type FGD Type FVD

y1 2)

Fy1 2)


1)

Oilqtymax

y2 2)

Fy2 2)


1)

OilqtymaxInner

partsOuter parts

Part 9

Inner parts

Outer parts

Part 9

rpm N kgm2 kgm2 kgm2 kg l mm N kgm2 kgm2 kgm2 kg l

370 101 430 0,171 0,664 0,026 44 7,2 110 460 0,171 0,698 0,026 47 8

425 116 600 0,306 1,006 0,072 65 11 128 645 0,306 1,068 0,072 69 12

490 130 920 0,684 2,28 0,12 98 17 144 980 0,684 2,4 0,12 103 18,5

565 139 1250 1,327 3,72 0,16 128 25,5 156 1350 1,327 3,94 0,16 136 28

655 168 2000 2,74 8,89 0,48 205 40 187 2150 2,74 9,35 0,48 215 44

755 193 2800 5,42 16,1 0,6 285 61 213 3030 5,42 16,8 0,6 300 67

1) Mass moments of inertia J (including the portions due to the power transmitting oil quantity) andweights (without oil) are valid for couplings with medium sized bores 2) Weight load at max. oil filling


Type FGO for flange mounting

Type FVO with delay chamber for flange mounting


Size

Speednmax

da

Bore

l1l1

maxl3 l4 l6

Fitting dimensions

G DIN 228/1

D1 d1j7

z k M No off

t d2 d3from to

rpm mm mm mm mm mm mm mm mm mm mm mm mm mm mm mm

370 3550 420 32 75 80 115 185 225 84 220 3 200 M 10

8 12,5 110 250 G1

425 3000 470 38 80 90 140 205 257 99 274 3 250 M 12

8 15 132 285 G1

490 2600 555 42 100 110 170 236 297 105 314 4 282 M 16

8 20 138 322 G1

565 2300 630 48 110 120 170 254 333 123 344 4 312 M 16

8 20 170 377 G1 1/2

655 2000 736 60 130 130 210 301 384 145 430 5 390 M 20

8 25 180 442 G1 1/2

755 1800 840 60 150 170 240 346 440 176 480 5 440 M 20

10 25 226 492 G1 1/2

887 1500 990 65 150 180 270 396 493 179 520 5 480 M 20

10 25 260 532 G1 1/2


16 of 24 1/17/2007 2:06 PM

1020 1250 1125 65 150 180 300 450 575 210 615 5 568 M 24

10 30 310 630 G1 1/2


Size

Type FGO Type FVO

Moment of inertia J 1)Weight 1) Oil qty max

Moment of inertia J 1)Weight 1) Oil qty max

Inner parts Outer parts Inner parts Outer parts

kgm2 kgm2 kg l kgm2 kgm2 kg l

370 0,171 0,638 33 7,2 0,171 0,672 36 8

425 0,306 0,921 43 11 0,306 0,983 47 12

490 0,684 2,12 67 17 0,684 2,24 72 18,5

565 1,327 3,64 91 25,5 1,327 3,86 99 28

655 2,74 8,19 145 40 2,74 8,65 157 44

755 5,42 15 200 61 5,42 15,7 215 67

887 9,88 24,8 278 98 9,88 26 299 107

1020 17,5 44,4 357 152 17,5 46,4 385 165

1) Mass moments of inertia J (including the portions due to the power transmitting oil quantity) andweights (without oil) are valid for couplings with medium sized bores


Type FGDB/FVDB with N-EUPEX coupling and brake drum


Size

Speednmax

da

Bore Assembly N Brake drumD x B

5)

Assembly F Flange

D1l1

a3) b c f l2 l5 g

h3)

d1j6

e k No.off

M dfrom to


370 3550 420 35 55 140 1727

531 18 315

400118150

122 115137

20 15 230 3 255 8 M12 280

425 3000 470 40 65 140 17 275

31 18 315400

118150

142 115137

20 15 230 3 255 8 M12 280

490 2600 555 50 80 170 177

300

32 22 400500

150190

172 147177

20 15 310 3 335 12 M12 360

565 2300 630 55 90 170 2111

300

36 22 400500

150190

172 147177

24 18 310 3 335 12 M12 360

655 2000 736 60 100 210 190

358

34 24 500630

190236

215 185214

24 18 390 5 425 12 M16 460

755 1800 840 75 120 240 00

4516

45 28 630710

236265

245 206235

30 22 515 5 550 12 M16 585

Centres of gravity, moments of inertia and weights


17 of 24 1/17/2007 2:06 PM

SizeBrake drumD x B

Moment of inertiainner parts

Type FGDB Type FVDB

Assembly F

Assembly N

Assembly F Assembly N Oilqtymax

Assembly F Assembly N Oilqtymaxy f 4) 2) y f 4) 2) y f 4) 2) y f 4) 2)

mm mm kgm2 kgm2 mm N kg mm N kg l mm N kg mm N kg l

370 315400

118150

0,5171,1

0,5331,12

5535

650780

6780

4125

710835

7285

7,2 6443

680810

6982

4932

740870

7588

8

425 315400

118150

0,6541,24

0,6751,26

7556

830950

89102

5943

9101040

97110

11 8767

880990

93106

7054

9551070

101114

12

490 400500

150190

1,733,38

1,833,43

7855

13401565

141164

5638

15001730

158181

17 9170

14051640

146169

6849

15701800

163186

18,5

565 400500

150190

2,44

2,54,1

9372

17001930

170193

7154

18902120

190213

25,5 10987

18052035

180202

8769

19902220

195218

28

655 500630

190236

5,810,4

610,6

11085

28003200

290330

8565

31003500

320360

40 126100

29503350

300340

10080

32503650

330370

44

755 630710

236265

13,819,3

14,520

11595

42004540

415450

8470

47205060

465500

61 130110

44304770

500535

10085

49505290

550585

67

1) Mass moments of inertia J (with oil filling) of outer parts and for part 2/3 see type FGD/FVD, page20 2) total weight without oil filling 3) a = position of brake drum flange, h = length of thread 4) Weight load at max. oil filling 5) Observe peripheral speed rating of brake drum (Dynamic balancing is necessary, when v > 26in/sec., GGG material for v > 40 in/sec.)


Type FNO with journal Type FND with N-EUPEX coupling


SizeSpeednmax

da

Bore

l1l1

maxD3

v2)

c3)

Shaft 6

l3

Bore D4

l5 s l4 l6D1 D1

max2)from to

d2m6

l2 from to


370 3550 420 38 60 80 110 140 72 30 30 60 70 310 24 75 70 2�6 454 380 115

425 3000 470 42 75 100 140 170 88 30 30 70 80 357 28 85 80 2�6 521 437 147

490 2600 555 48 75 110 140 170 88 30 30 70 90 395 38 90 90 2�6 579 485 148

565 2300 630 65 90 120 170 210 105 40 30 90 100 443 48 100 100 3�8 648 543 178

655 2000 736 65 95 135 210 250 112 40 40 100 125 519 60 120 125 3�8 774 644 218

755 1800 840 65 120 150 210 250 142 40 40 110 140 565 65 140 140 3�8 850 705 219

887 1500 990 65 120 170 250 300 142 50 40 120 180 655 80 160 180 5�10 1023 835 259

1020 1250 1125 65 150 190 250 300 170 50 40 140 190 712 90 180 190 5�10 1100 902 259



18 of 24 1/17/2007 2:06 PM

y12)

Fy12)

Moment of inertia J1) Weight

1)y22)

Fy22)

Moment of inertia J1)

Part 1 Weight1)Inner

partsOuter parts

Inner parts

Outer parts

rpm N kgm2 kgm2 kg mm N kgm2 kgm2 kgm2 kg l

370 180 600 0,173 0,790 53 197 665 0,197 0,790 0,023 67 8,2

425 203 840 0,308 1,216 75 224 940 0,348 1,216 0,04 84 12,5

490 220 1200 0,687 2,61 105 242 1320 0,767 2,61 0,07 132 19

565 255 1710 1,339 4,57 151 278 1900 1,469 4,57 0,12 188 29

655 300 2700 2,75 10,2 235 330 3000 3,08 10,2 0,32 298 45

755 320 3780 5,44 18,2 320 352 4200 5,98 18,2 0,55 405 69

887 380 5300 9,95 30,7 440 428 6000 11,4 20,7 1,6 600 110

1020 395 7000 17,6 53 570 450 8000 19,9 53 2,4 770 170

1) Mass moments of inertia J (including the portions due to the power transmitting oil quantity) andweights (without oil) are valid for couplings with medium sized bores 2) Max. bore for extended hub, fixing by set screw. 3) Possible hub shortening 4) Weight Load at max. oil filling


Type FNDB with N-EUPEX coupling and brake drum type P and A


SizeSpeed nmax

da

Bore

l1l1

maxD3

v 2)

c 3)

Brake drumD x B

5)

d1 s l6 l7 l8

Assembly P

D1 D1 max 2)

D2l

from to from to


370 3550 420 38 60 80 110 140 72 30 30 315400

118150

180200

2�6 380390

115 101 2428

8090

118150

425 3000 470 42 75 100 140 170 88 30 30 315400

118150

200 2�6 437 147 106 2428

8090

118150

490 2600 555 48 75 110 140 170 88 30 30 400500

150190

225250

2�63�8

485495

148 131 2838

90100

150190

565 2300 630 65 90 120 170 210 105 40 30 400500

150190

250 3�8 543 178 131 2838

90100

150190

655 2000 736 65 95 135 210 250 112 40 40 500630

190236

315 3�8 644 218 156 3848

100140

190236

755 1800 840 65 120 150 210 250 142 40 40 630710

236265

350 3�8 705 219 170 4855

140140

236265

887 1500 990 65 120 170 250 300 142 50 40 710 265 440 5�10 835 259 217 55 140 265

1020 1250 1125 65 150 190 250 300 170 50 40 710 265 480 5�10 902 259 240 55 140 265



19 of 24 1/17/2007 2:06 PM

Inner parts

Outer parts

Brake drum

Assembly P

Assembly A

Assembly P

Assembly A

mm N kgm2 kgm2 kgm2 kgm2 kg kg mm mm l

370 197 665 0,1970,213

0,79 0,3461,066

0,331,026

88113

85106

315400

118150

8,2

425 224 940 0,348 1,216 0,3731,066

0,3571,026

115135

112128

315400

118150

12,5

490 242 1320 0,7670,817

2,61 1,12,9

1,062,79

170216

163204

400500

150190

19

565 278 1900 1,469 4,57 1,1752,9

1,1352,79

225263

218251

400500

150190

29

655 330 3000 3,08 10,2 3,148,16

3,037,98

365420

353404

500630

190236

45

755 352 4200 5,98 18,2 8,514,6

8,3213,7

520575

504526

630710

236265

69

887 428 6000 11,4 30,7 15,5 14,6 750 700 710 265 110

1020 450 8000 19,9 53 16,5 15,6 915 865 710 265 170

1) Mass moments of inertia 1 (including the portions due to the power transmitting oil quantity) andweights (without oil) are valid for couplings with medium sized bores 2) Max. bore for extended hub, fixing by set screw. 3) Possible hub shortening 4) Weight load at max. oil filling 5) Observe peripheral speed rating of brake drum (Dynamic balancing is necessary, when v > 26m/sec., GGG material for v > 40 m/sec.)


Operating control.

Electronic monitor (EOC system)

The required operational status of the FLUDEX fluid coupling is monitored with the non-contacting andmaintenance-free "Electronic Operating Control" system. In case of overloads and overheating of thecoupling, loss of operating fluid with associated pollution and prolonged down time can be avoided.With drive via the inner part, the output speed/mm. set point value can be monitored in addition to thetemperature.

The EOC system consists of the transmitter, the sensor and the evaluation instrument. The transmitteris screwed into the coupling housing in place of a fusible safety plug (fig. 28.I). The second fusiblesafety plug remains in the coupling for additional safety. The evaluation instrument can also besupplied with inherent safe sensor input for operation in hazardous locations.

When the coupling is rotating, and below the response temperature of 125°C, the transmitter emitspulse signals to the proximity sensor every time it passes. This signal is passed on to the evaluationinstrument. The time between two consecutive pulses is compared in the instrument with the pre-setvalue (speed control function) or if the pulses stop altogether due to exceeding the responsetemperature (temperature control function) the evaluation instrument will de-energise at once theoutput relay. The output relay can trigger a fault signal or drive cut-out (circuit suggestion 26.II). Thecoupling is operational again after having cooled down.

The evaluation instrument is furnished with a starting override that prevents an error message duringthe starting phase of the drive.

The EOC system can be retrofitted in couplings from size 297 - 678 without any rework, as a rule.

Possible connecting voltages (must be stated in order)

220 V ~ (standard)

12, 24, 42, 110 V ~; 24 V = (extra charge)


20 of 24 1/17/2007 2:06 PM

Operating control

Thermal switch equipment (mechanical)

Discharge and loss of hydraulic fluid with pollution of the surroundings in case of overheating of thecoupling can safely be avoided by fitting a thermal switch.

The thermal switch will not operate if the machine side is blocked and the coupling housing isconnected with this side. On a stationary housing the switch pin cannot actuate the switch. At switchpin speeds greater than 50 m/s. the use of a mechanical control instrument is no longer practical sinceimpact of the switch pin at those speeds would inevitably damage the control device. The max.allowable operating speeds for units with thermal switches are listed in table 28.II.

For higher speeds, the EOC-system described on page 26 should be used.

The thermal switch equipment consists of thermal switch and switching circuit elements.

These include a limit switch with make and break contacts and a swiveling cam. Limit switch and camare mounted on a common base plate (Fig. 27.I). This thermal switch is screwed into the housing inplace of a fusible safety plug (Fig. 28.I).

For additional safety, one fusible safety plug with a higher response temperature remains in thecoupling. When the set temperature is exceeded, the switch pin is released from the fusible inset andactuates the switching element. In the tripped condition the switch pin can protrude max. 10 run fromthe fusible inset. The drive can be switched off in this way and/or an optical or acoustic warning signalcan be triggered. Fig. 27.111 shows a proposed circuit.

The following thermal switches are available

Coupling size Thread 1)Response temperature

Thermal switch Fusible safety plug

297 up to 1020 M 18 x 1,5 < 110°C< 140°C

< 140°C< 160°C

28.II Dimensions for operating control equipment

FLUDEXSize

a2)

d2)

l1l2

l3 l4 r Speed max.1)Short pulley Long pulley

mm mm mm mm mm mm mm mm rpm

297 15 305 83 147 169 -- -- 187,5 2500

342 28 356 102 177 210 -- -- 214,5 2240

395 21 407 110,5 214,5 253 -- -- 237,5 2000

450 35 464 126 284 323 -- -- 269,5 1800


21 of 24 1/17/2007 2:06 PM

516 34 537 147 344 380 -- -- 305,5 1600

590 48 602 166 476 -- -- -- 344,5 1450

370 7 370 -- -- -- 84 216 224 2100

425 10 420 -- -- -- 99 253 249 1900

490 21 495 -- -- -- 105 279 291 1650

565 13 560 -- -- -- 123 309 329 1500

655 15 658 -- -- -- 145 374 379 1250

755 24 742 -- -- -- 176 389 429 1100

887 26 881 -- -- -- 179 476 504 1000

1020 33 925 -- -- -- 210 499 577 900

1) Upper speed limit for mechanical thermal control equipment (max. circumferential speed v = 50m/s). No speed limit has to be taken into account for the EOC system. 2) Contour of the coupling in the area of the cover

Examples of special designs

FLUDEX couplings in special design are supplied for various types of application. We show here a fewexamples how special problems can be solved.

For new designs, further developments or other technical coupling problems we are gladly prepared toplace our many years� experience in this particular field at your disposal.

Practical hints for installation

1. Arrangement of the coupling parts

The drive direction (input through housing or impeller) must be given in the order. The preferred drivedirection is indicated on the dimension drawings of individual designs (see technical data 6.2).

2. Bores

If at all possible, select any of the preferred bore sizes, listed on page 14.

Different bores necessitate extra charge and longer deliveries.

3. Safety precautions

The user should provide guards for rotating parts to prevent accidents, taking into account applicablenational and local safety regulations. As a discharge of hydraulic fluid must be expected in the event ofan excessive temperature rise in the coupling (due to a blocked driven machine for example) it isrecommended that the coupling's cover in the area of the rotating fusible safety plugs should bedesigned so as to offer protection against splashing oil without obstructing the air flow around thecoupling.

4. Mounting and dismantling

FLUDEX couplings type FAD, FGD, FVD, FND and FNDB facilitate mounting and dismantling of shafts ormachines without axial displacement, if dimension P resp. a has been observed.


22 of 24 1/17/2007 2:06 PM

5. Permissible shaft misalignments

The permissible angular and parallel offset misalignments for FLUDEX - N - EUPEX couplingcombinations depend on speed and torque. Please consult us, if necessary.

6. Flexible for N-EUPEX Couplings

Reliable transmission of torque and continuing operation is safeguarded only if original N - EUPEXflexibles are used. For types FAD, FGD, FVD, FND and FNDB these flexibles can be replaced withoutmoving the coupled machines, if dimension P resp. a has been observed.

7. Bearings for shaft ends

The shaft extensions to be connected should be bearing supported close to the coupling.

8. Balancing

FLUDEX couplings of size 222 are not balanced. From size 257 up to size 516 of types PA.. all singlecomponents are balanced in one plane to quality grade 0 6.3.

FLUDEX couplings of sizes 370 to 1020 of types PG.., FV.. and FN.. are balanced as a completecoupling with oil filling, in two planes, to quality grade Q 6.3

For reasons of good balance, all couplings whose hollow shaft is mounted on the motor shaft, aresupplied with a second keyway in part 6 at 180�.

The N-EUPEX parts up to size 297 are not balanced. From size 342 up, they are balanced in one planeto Q 16, without keyway.

Balancing to quality class Q 6.3 is only possible on coupling parts with finished bores. The order shouldspecify whether balancing is required with or without keyway cut. Different requirements should bestated in the order (extra charge).

9. Mounting and pull-off aids

Special mounting and pull-off tools are available for FLUDEX couplings. The N-EUPEX parts can bemounted and removed with ordinary commercial extractors.

10. Oil seals and fusible safety plugs

Unless otherwise specified, FLUDEX fluid couplings are furnished with Perbunan seals as standard. Theyare suitable for continuous operating temperatures up to +90�C, while the fusible safety plugs melt at140% (stamped on the plug).

They are also suitable for sites within explosion hazard groups G1 - G3.

For continuous operating temperatures in excess of +90°C, Viton seals and fusible safety plugs for amelting temperature of 160% are required (stamped on plug).

This design is charged for as an extra.

Couplings operating in areas within temperature class 14 can be supplied with fusible safety plugsmelting at a temperature of 110%. Each coupling is furnished with two spare fusible safety plugs.

11. Control equipment

From coupling size 297 up, loss of hydraulic fluid as a result of overloading can be avoided by fittingmonitoring or control equipment (see pages 26 and 27).

12. Oil filling

Couplings are supplied ready for operation but without their oil filling.

Hydraulic oils VG 22/VG 32 should be used only.

The required oil quantity is stamped on the coupling. Do not exceed the max. amounts listed in the"Installation and operating instructions" V 481 and in the dimension drawings.


23 of 24 1/17/2007 2:06 PM

If, for safety reasons, the use of mineral oil is not permitted, clear, low flammable HSD fluids may beused. Perbunan oil seals are not suitable for these HSD fluids and, therefore, couplings to be filled withthis oil must have Viton seals fitted.

In case HSD fluid filling is intended, it should be specified when ordering.

13. Water filling

For mining applications, special design FLUDEX couplings with water as operating fluid are available(extra charge).

14. Installation and commissioning

Please consult the "Installation and operating instructions" V 481 for installation and commissioning ofFLUDEX fluid couplings.

15. Axial fastening

For axial fastening with end plate and screw, the carrying shaft end should be designed with a tappedcentre hole to DIN 332. Different thread sizes must be specified when ordering.

ISO fits, shaft ends, keys and center holes

Cylindrical shaft ends (extract from DIN 748/1, issue January 1970

Diameter mm 24 25 28 30 32 35 38 40 42 45 48 50 55 60 65 70 75 80 85 90 95 100

Tolerance mm k6 m6

Length mm 50 60 80 110 140 170 210

Application of ISO fits for given shaft tolerances

Shaft end tolerancesRecommendedbore tolerances

h6 h8 k6 m6 n6

Diameter in mm

> 25 H7

≤ 50 H7

> 100 H7

≤ 50 H7

> 50 H7

all H7

For heavy duty operating conditions, e.g. reversing under load it is recommended that a tighter fit and hub keyway width to ISO P9 tolerances, a taper key or tangential key connection is connection is

selected

Centre holes


24 of 24 1/17/2007 2:06 PM

above to mm mm mm mm mm mm mm mm mm mm

16 21 M6 5 6,4 9,6 10,5 16 21 5 2,8 0,4

21 24 M8 6,8 8,4 12,2 13,2 19 25 6 3,3 0,4

24 30 M10 8,5 10,5 14,9 16,3 22 30 7,5 3,8 0,6

30 38 M12 10,2 13 18,1 19,8 28 37,5 9,5 4,4 0,7

38 50 M16 14 17 23 25,3 36 45 12 5,2 1

50 85 M20 17,5 21 28,4 31,3 42 53 15 6,4 1,3

85 130 M24 21 25 34,2 38 50 63 18 8 1,6

130 225 M30* 26 31 44 48 60 77 17+1 11 1,9

225 320 M36* 31,5 37 55 60 74 93 22+1 15 2,3

320 500 M42* 37 43 65 71 84 105 26+1 19 2,7

* Not to DIN

KeysDiameter

d

Width b1)

Height h1)

Depth of keyway

in shaft t1

Depth of keyway

in hub d + t2Drive type fastening without taper

action

above tomm mm mm mm

mm mm

8 10 3 3 1,8 d + 1,4

10 12 4 4 2,5 d + 1,8

12 17 5 5 3 d + 2,3

17 22 6 6 3,5 d + 2,8

22 30 8 7 4 d + 3,3

30 38 10 8 5 d + 3,3

38 44 12 8 5 d + 3,3

44 50 14 9 5,5 d + 3,8

50 58 16 10 6 d + 4,3

58 65 18 11 7 d + 4,4

65 75 20 12 7,5 d + 4,9

75 85 22 14 9 d + 5,4

85 95 25 14 9 d + 5,4

95 110 28 16 10 d + 6,4

110 130 32 18 11 d + 7,4

130 157 36 20 12 d + 8,4

157 170 40 22 13 d + 9,4

170 200 45 25 15 d + 10,4

Round head parallel key according toDIN 6885/1, issued August 1968

1) the tolerance band for the hub keywaywidth b for parallel keys is normally ISO JS 9

Documents

Fluidex Fluid Couplings