Answers for industry.

siemens.com/hydrodynamiccouplings

The perfect connection for a perfect performanceThe FLUDEX ARPEX combination for a soft starting torque now comes in a standardized series

2

Produced entirely in house, the tried and tested combi- nation is now available in six versionsAs the world’s largest manufacturer of gear units and couplings, the connection between fluid and pin couplings of all designs has been a matter of course for Siemens for decades. Our customers have also successfully combined FLUDEX® fluid couplings and ARPEX® torsionally rigid all-steel couplings for many years. We have now created our own standardized range comprising six versions of this tried and tested combination.

We will gladly offer individual consultations to help you benefit from our experience and inter- disciplinary expertise in almost all sectors of industry and primary production. Siemens offers you outstanding value for money from the drive technology specialist plus consistent quality and maximum availability from a highly flexible solution.

3

Flexible coupling synthesis from a single source

For years, FLUDEX ARPEX coupling combinations have enjoyed outstanding success as starting aids and for the acceleration of large masses. They optimally limit the starting and maximum torque in the drive train. Their hydrodynamic functional principle enables machines to start up softly without jolting, so you do not need an oversized motor.

The entire FLUDEX ARPEX series is produced in house and is based on two standardized coupling ranges that enjoy an excellent reputation worldwide.

By combining the two types of coupling, outstanding shock damping and vibration isolation properties are twinned with the ability to minimize reaction forces and compensate for large shaft misalignments. The coupling combination also provides optimum overload protection.

FLUDEX ARPEX combinations are the perfect solutions for applications with high temperature requirements. They can be used in a greater temperature range than elasto-meric flexible couplings and are practically wear-resistant and maintenance-free as well as radially mountable. This eliminates any need to change the position of the motor and/or gear unit. These couplings offer you maximum flexibility.

Why choose the FLUDEX ARPEX series?

•All coupling parts come from a single source

•Independent advice from experienced drive experts and a comprehensive range of couplings

•Outstanding value for money

•Quick availability of the coupling combination worldwide

Key features of the FLUDEX ARPEX series:

•Motor assistance during start-up

•Soft, jolt-free starting of machines

•More even distribution of coupling masses on the shafts to be connected

•Excellent torsional vibration isolation and shock damping

•Overload protection

•Suitable for use across a large temperature range

•Compensation of radial, axial and angular shaft misalignments

•Radially removable

•Practically wear-resistant and maintenance-free

•Reduction of reaction forces

4

Selecting the FLUDEX size

The FLUDEX size is determined based on the output to be transmitted in comparison with the rated outputs listed in the tables over the page. No operational or additional safety factors need be taken into consideration.

The rated outputs specified in the tables generally pre-suppose the coupling’s maximum permissible fill level (80% to 85%) and, due to operating slip, lead to an increase in the coupling temperature of approximately 50° C relative to the ambient (cooling air) temperature. With lower outputs, the increase in the coupling tempera-ture will be proportionally lower. If an absolute tempera-ture (ambient temperature + coupling temperature increase) of > 85° C is to be expected for the coupling’s continuous operation, the coupling must be fitted with FPM seals and 160° C fusible safety plugs.

Standard safety features

•EOC system

•Thermal switching equipment (mechanical)

•ATEX 95

Typical uses:

•Belt conveyors

•Chain conveyors

•Bucket conveyors

•Shredders

•Crushers

•Mixers

•Mills

•Roller presses

•Paddle wheel drives

•Fans

•Compressors

•Centrifuges

•Pumps

Combined to form a special standardized series: the FLUDEX fluid coupling and the ARPEX torsionally rigid all-steel coupling.

5

Speed in rpm

Size600 740 890 980 1,180 1,350 1,470 1,600 1,770 2,000 2,300 2,600 2,950 3,550

Rated output PN in kW

4 7.5 12 16 26 38 48 61 85 110 140 170 220 290 370

7.5 15 23 30 48 70 90 115 140 175 220 280 340 – 425

15 30 45 58 95 140 180 210 245 300 380 480 – – 490

28 55 85 110 180 255 300 350 420 525 660 – – – 565

55 110 170 220 350 450 520 600 730 900 – – – – 655

110 210 330 440 600 760 870 1,010 1,220 – – – – – 755

240 440 700 810 1,130 1,440 1,660 – – – – – – – 887

480 880 1,400 1,600 2,000 2,350 2,500 – – – – – – – 887D*

* Size 887D = double-suction design.

FG… series Type

•Without delay chamber• Starting aid for standard motors• For overload limitation in the event

of drive blockage•With torsional vibration isolation

FGAA With coupling hub on both sides

FGAB With brake drum

FGAS SB With brake disk as stopping brake

FGAS HB With brake disk as blocking brake

FN… series Type

•With large delay chamber• Starting aid, also suitable for motors with

highly unfavorable torque characteristics•Very soft starting of empty and full conveying

equipment

FNAA With coupling hub on both sides

FNAB With brake drum

FNAS SB With brake disk as stopping brake

FNAS HB With brake disk as blocking brake

Performance characteristics of the FLUDEX ARPEX FG… and FN… series

Selecting the FLUDEX type

FLUDEX couplings are designed with radial unset blades and are therefore suitable for rotation in both directions and reversing operation.

6

NL1 S1

L1 L3LG

L2

S2 NL2

⌀DA

⌀D1

⌀ND1⌀D ⌀DBS

⌀ND2

⌀D2

Type: FGAAFLUDEX coupling ARPEX coupling Weight

**

Size

Maximum speed Dimensions in mm

Size

DIN 6885 keywaysDimensions in mm m

nKmax min–1

DA L3 L1 L2 LG D D1/2max. ND1/2 NL1/2 S1 kg

370 3,600 420 192 116 165 473 S06-175 195* 80 110 80 15 58

425 3,000 470 207 117 175 499 S06-195 215* 90 120 80 15 73

490 2,600 555 243 180 246 669 C08-225 225 120 147 140 16 122

565 2,300 630 261 180 256 697 C08-225 225 120 147 140 16 151

655 2,000 736 296 202 302 800 C08-255 255 140 172 160 17 222

755 1,800 840 341 210 324 875 C08-270 270 150 182 170 14 288

887 1,500 990 393 251 393 1,037 C08-325 325 170 214 195 20 531

887D 1,500 990 640 276 447 1,363 C08-355 355 185 235 215 22 831

* Version with protective sleeve.** Coupling weight with maximum hub bores without oil filling.

Three features safeguard the reliability of couplings in the FLUDEX ARPEX series. Thanks to the electronic operating control (EOC) system, the couplings’ operating status can be monitored without contact or maintenance. Meanwhile, a thermal operating control function and fusible safety plugs in the coupling housing provide additional protection against overheating and excess pressure.

Basic coupling without delay chamber

Drive Output

7

NL1

L1 L3LG

L2

L4

BBT A

⌀DA

⌀D1

⌀ND1⌀D

⌀DBT

⌀ND2

⌀D2

S1

FLUDEX coupling ARPEX coupling Weight**

Size

Maximum speed Dimensions in mm

Size

DIN 6885 keywaysDimensions in mm m

nKmax min–1

DA L3 L1 L2 LG D D1max. ND1 NL1 D2

max. ND2 S1Brake drum

A kgDBT BBT

370 2,400 420 192 116 272 580 S06-175 195* 80 110 80 80 128 15 315 118 50 79

1,900 420 192 116 309 617 S06-175 195* 80 110 80 90 160 15 400 150 50 106

425 2,400 470 207 117 271 595 S06-195 215* 90 120 80 80 128 15 315 118 50 95

1,900 470 207 117 308 632 S06-195 215* 90 120 80 90 160 15 400 150 50 121

490 1,900 555 243 180 326 749 C08-225 225 120 147 140 90 160 16 400 150 80 169

1,800 555 243 180 370 793 C08-225 225 120 147 140 100 175 16 500 190 110 207

565 1,900 630 261 180 326 767 C08-225 225 120 147 140 90 160 16 400 150 80 198

1,800 630 261 180 370 811 C08-225 225 120 147 140 100 175 16 500 190 110 236

655 1,800 736 296 202 376 874 C08-255 255 140 172 160 100 175 17 500 190 110 305

1,500 736 296 202 422 920 C08-255 255 140 172 160 140 224 17 630 236 100 367

755 1,500 840 341 210 423 974 C08-270 270 150 182 170 140 224 14 630 236 100 432

887 1,300 990 393 251 496 1,140 C08-325 325 170 214 195 160 265 20 710 265 – 732

* Version with protective sleeve.** Coupling weight with maximum hub bores without oil filling. L4 indicates the shaft insertion depth.A indicates a potential hub extension on the brake drum.

Type: FGAB Basic coupling without delay chamber, with brake drum

Drive Output

8

NL1 S1

L1 L3LG

L2

BBS

NL2

A

⌀DA

⌀D3

⌀D1

⌀ND1⌀D

⌀DBS

⌀ND2

⌀D2

FLUDEX coupling ARPEX coupling Weight**

Size Type

Maxi-mum speed

Dimensions in mm

Size

DIN 6885 keywaysDimensions in mm m

nKmax min–1

DA L3 L1 L2 LG D D1/2 max.

ND 1/2 NL1 NL2 S1

Brake diskD3 A kg

DBS BBS

370 SB*** 2,100 420 192 116 342 650 S06-175 195* 80 110 80 215 15 450 30 222 185 96

HB*** 3,200 420 192 116 258 566 S06-175 195* 80 110 80 131 15 355 16 222 115 71

425 SB 1,900 470 207 117 359 683 S06-195 215* 90 120 80 215 15 500 30 250 185 121

HB 3,000 470 207 117 275 599 S06-195 215* 90 120 80 131 15 355 16 250 115 87

490 SB 1,800 555 243 180 374 797 C08-225 225 120 147 140 215 16 560 30 235 185 180

HB 2,600 555 243 180 299 722 C08-225 225 120 147 140 140 16 400 16 235 124 138

565 SB 1,800 630 261 180 396 837 C08-225 225 120 147 140 215 16 630 30 235 185 224

HB 2,300 630 261 180 321 762 C08-225 225 120 147 140 140 16 450 16 235 124 171

655 SB 1,800 736 296 202 418 916 C08-255 255 140 172 160 215 17 630 30 265 185 294

HB 2,000 736 296 202 363 861 C08-255 255 140 172 160 160 17 500 16 265 144 247

755 SB 1,500 840 341 210 437 988 C08-270 270 150 182 170 215 14 710 30 280 185 379

HB 1,800 840 341 210 402 953 C08-270 270 150 182 170 180 14 630 20 280 160 337

887 SB 1,200 990 393 251 483 1,127 C08-325 325 170 214 195 215 20 800 30 335 185 594

HB 1,500 990 393 251 463 1,107 C08-325 325 170 214 195 195 20 710 20 335 175 601

* Version with protective sleeve.** Coupling weight with maximum hub bores without oil filling. *** SB = stopping brake version/HB = blocking brake version. D3 is the minimum permissible inner diameter of the brake shoes.

Type: FGAS Basic coupling without delay chamber, with brake disk

Drive Output

9

NL1 S1

L1 L3LG

L2

S1 NL2

⌀DA

⌀D1⌀N

D1

⌀D ⌀DBS

⌀ND2

⌀D2

FLUDEX coupling ARPEX coupling Weight**

Size Maximum speed Dimensions in mm

Size

DIN 6885 keywaysDimensions in mm m

nKmax min–1

DA L3 L1 L2 LG D D1/2 max. ND1/2 NL1 S1 kg

370 3,600 420 280 174 165 619 S06-175 195* 80 110 80 15 73

425 3,000 470 327 174 175 676 S06-195 215* 90 120 80 15 97

490 2,600 555 365 259 246 870 C08-225 225 120 147 140 16 161

565 2,300 630 413 259 256 928 C08-225 225 120 147 140 16 196

655 2,000 736 465 282 302 1,049 C08-255 255 140 172 160 17 288

755 1,800 840 517 299 324 1,140 C08-270 270 150 182 170 14 373

887 1,500 990 635 341 393 1,369 C08-325 325 170 214 195 20 666

887D 1,500 990 869 370 447 1,686 C08-355 355 185 235 215 22 984

* Version with protective sleeve.** Coupling weight with maximum hub bores without oil filling.

Type: FNAA Version with large delay chamber

Drive Output

10

NL1 S1

L1 L3LG

L2

BBT

L4

A

⌀DA

⌀D1⌀N

D1

⌀D

⌀DBT

⌀ND2

⌀D2

FLUDEX coupling ARPEX coupling Weight**

Size

Maximum speed Dimensions in mm

Size

DIN 6885 keywaysDimensions in mm m

nKmax min–1

DA L3 L1 L2 LG D D1 max. ND1 NL1 D2

max. ND2 S1Brake drum

A kgDBT BBT

370 2,400 420 280 174 272 726 S06-175 195* 80 110 80 80 128 15 315 118 50 94

1,900 420 280 174 309 763 S06-175 195* 80 110 80 90 160 15 400 150 50 121

425 2,400 470 327 174 271 772 S06-195 215* 90 120 80 80 128 15 315 118 50 118

1,900 470 327 174 308 809 S06-195 215* 90 120 80 90 160 15 400 150 50 145

490 1,900 555 365 259 326 950 C08-225 225 120 147 140 90 160 16 400 150 80 208

1,800 555 365 259 370 994 C08-225 225 120 147 140 100 175 16 500 190 110 246

565 1,900 630 413 259 326 998 C08-225 225 120 147 140 90 160 16 400 150 80 243

1,800 630 413 259 370 1,042 C08-225 225 120 147 140 100 175 16 500 190 110 281

655 1,800 736 465 282 376 1,123 C08-255 255 140 172 160 100 175 17 500 190 110 371

1,500 736 465 282 422 1,169 C08-255 255 140 172 160 140 224 17 630 236 100 433

755 1,500 840 517 299 423 1,239 C08-270 270 150 182 170 140 224 14 630 236 100 518

887 1,300 990 635 341 496 1,472 C08-325 325 170 214 195 160 265 20 710 265 – 867

* Version with protective sleeve. ** Coupling weight with maximum hub bores without oil filling. L4 indicates the shaft insertion depth. A indicates a potential hub extension on the brake drum.

Type: FNAB Version with large delay chamber and brake drum

Drive Output

11

NL1 S1

L1 L3LG

L2

BBS A

NL2

⌀DA

⌀D3

⌀D1

⌀ND1⌀D

⌀DBS

⌀ND2

⌀D2

FLUDEX coupling ARPEX coupling Weight**

Size Type

Maxi-mum speed

Dimensions in mm

Size

DIN 6885 keywaysDimensions in mm m

nKmax min–1

DA L3 L1 L2 LG D D1/2 max.

ND 1/2 NL1 NL2 S1

Brake diskD3 A kg

DBS BBS

370 SB*** 2,100 420 280 174 342 796 S06-175 195* 80 110 80 215 15 450 30 222 185 112

HB*** 3,200 420 280 174 258 712 S06-175 195* 80 110 80 131 15 355 16 222 115 86

425 SB 1,900 470 327 174 359 860 S06-195 215* 90 120 80 215 15 500 30 250 185 144

HB 3,000 470 327 174 275 776 S06-195 215* 90 120 80 131 15 355 16 250 115 110

490 SB 1,800 555 365 259 374 998 C08-225 225 120 147 140 215 16 560 30 235 185 219

HB 2,600 555 365 259 299 923 C08-225 225 120 147 140 140 16 400 16 235 124 178

565 SB 1,800 630 413 259 396 1,068 C08-225 225 120 147 140 215 16 630 30 235 185 269

HB 2,300 630 413 259 321 993 C08-225 225 120 147 140 140 16 450 16 235 124 216

655 SB 1,800 736 465 282 418 1,165 C08-255 255 140 172 160 215 17 630 30 265 185 360

HB 2,000 736 465 282 363 1,110 C08-255 255 140 172 160 160 17 500 16 265 144 313

755 SB 1,500 840 517 299 437 1,253 C08-270 270 150 182 170 215 14 710 30 280 185 465

HB 1,800 840 517 299 402 1,218 C08-270 270 150 182 170 180 14 630 20 280 160 423

887 SB 1,200 990 635 341 483 1,459 C08-325 325 170 214 195 215 20 800 30 335 185 719

HB 1,500 990 635 341 463 1,439 C08-325 325 170 214 195 195 20 710 20 335 175 736

* Version with protective sleeve. ** Coupling weight with maximum hub bores without oil filling. *** SB = stopping brake version/HB = blocking brake version. D3 is the minimum permissible inner diameter of the brake shoes.

Type: FNAS Version with large delay chamber and brake disk

Drive Output

Further information about gear units: www.siemens.com/gearunits

Siemens partners near you: www.siemens.com/drives-contact

This brochure provides general descriptions and perfor-mance specifications which may not apply in particular cases or could change as a result of product developments.The desired performance specifications shall only be binding if they have been expressly agreed upon during contract conclusion.

All product descriptions may contain trademarks or product names of Siemens AG or other supplier companies. The use of these by third parties for their own purposes may infringe upon the owner’s rights.

Siemens AG Industry Sector Mechanical Drives Alfred-Flender-Straße 77 46395 BOCHOLT GERMANY

Subject to change 0213 Order no.: E20001-A360-P900-X-7600 DISPO 27904 GD.MD.ST.CPLX.52.3.01 WS 0213 1.5Printed in Germany© Siemens AG 2013