1 of 12 | © Rolltorq | 2020-01 Rev. 2 | rolltorq-bms

Catalogue Pages

Hydraulic Orbital Motors BMS, BMSS, BMSW Series

Technical Data

Catalogue Number Displace-ment

Maximum Power

Maximum Pressure

Drop

Maximum Inlet

Pressure

Maximum Torque

Maximum Speed

Maximum Flow

cm3 kW MPa MPa Nm 1/min dm3/min

BMS*80 80.5 16 20.5 23.0 226 805 65

BMS*100 100.5 18 20.5 23.0 282 745 75

BMS*125 126.3 18 20.5 23.0 355 590 75

BMS*160 160.8 18 20.5 23.0 451 465 75

BMS*200 200.9 18 20.5 23.0 564 370 75

BMS*250 252.6 18 20.0 23.0 684 295 75

BMS*315 321.5 17 20.0 23.0 870 230 75

BMS*400 401.9 11 15.5 23.0 813 185 75

BMS*500 476.5 9 12.0 23.0 728 155 75

* Wheel models BMSW, and short models BMSS are included.

BMS motor

Description

Orbital hydraulic motors of BMS series are dedicated to continuous work. Distribu-tion valve is of disc type, driven separately by a short cardan shaft. This reduces inter-nal hydraulic loses by separation of output shaft loads from hydraulic oil distribution. The tapered roller bearings on output shaft enable for absorbing static and dynamic radial loads, that can be significantly higher than is spool valve models. Gearwheel is equipped with rollers.

Features

• Displacement: 80.5 - 476.5 cm3/rev;• Rotational speed range: 5 - 805 rpm;• Maximum inlet pressure: 23 MPa;• Maximum power: 9 - 18 kW.

Advantages

• Low pressure start;• Reinforced shaft seal;• High startup torque and ability to withstand significant back pressures;• The ability to transfer axial and radial loads;• Compact size and easy installation.

2 of 12 | © Rolltorq | 2020-01 Rev. 2 | rolltorq-bms

Performance Data

BMS80Pressure [MPa]

Max cont.

Max int.

3.5 7 10.5 14 17.5 20.5 22.5

Flow

[l/m

in]

15 35181

75177

114170

150165

187158

220151

239141

30 35363

75355

115346

152340

190330

222322

240310

40 33485

75479

115464

155453

193444

226437

240415

50 30610

73602

113594

153580

190565

223556

237530

60 28735

70724

110714

150698

188680

220670

235642

Max cont. 65 27801

68790

108775

148760

186742

215727

233704

Max int. 80 23988

66975

104955

140938

176915

205897

213870

35181

Torque: 35 [Nm]Rotational speed: 181 [1/min]

Coding

1 2 3 4 5 6 7

BMS 80 E4 B D B

1 Type BMS disc valve type orbital motor

2 Variantomit

SW

standardshort version (plug-in model)wheel version

3 Displacement

80100125160200250315400500

80,5 cm3

100,5 cm3

126,3 cm3

160,8 cm3

200,9 cm3

252,6 cm3

321,5 cm3

401,9 cm3

476,5 cm3

4 Flange

E2E4E6

omit

oval flange 2 mounting holes ø 13.5, pilot ø 82.5square flange 4 mounting holes ø 13.5, pilot ø 82.5oval flange 4 mounting holes ø 13.5, pilot ø 82.5BMSS, BMSW only standard flanges according to respective drawings

5 Shaft

ABCDEGHK

T1omit

ø 25 cylindrical shaft, pallalel key 8x7x32, for BMS onlyø 32 cylindrical shaft, pallalel key 10x8x45, for BMS onlyø 32 cylindrical shaft, pallalel key 10x8x45 for BMSW onlyø 25.4 cylindrical shaft, pallalel key 6.35x6.35x32ø 25.3 splined shaft, pallalel key 8x7x32ø 31.75 cylindrical shaft, pallalel key 7.96x7.96x32ø 34.85 splined shaft, 6-34.85x28.15x8.64ø 35 tapered shaft, 1:10, pallalel key 6x6x30, for BMSW onlyø 35 tapered shaft, 1:10, pallalel key 6x6x30, for BMS onlyBMSS only standard shaft according to respective drawing

6 Ports Domit

A,B ports G 1/2” (15 deep), Drain port G 1/4” (12 deep)BMSS, BMSW only standard ports: A,B ports G 1/2” (15 deep), Drain port G 1/4” (12 deep)

7 Paint Bomit

black paintno painting

Preferred versions are bolded

Rev. 2 | rolltorq-bms © Rolltorq | 2020-01 | 3 of 12

BMS100Pressure [MPa]

Max cont.

Max int.

3.5 7 10.5 14 17.5 20.5 22.5

Flow

[l/m

in]

15 44145

94142

142136

187132

233127

275121

298113

30 42291

93284

144277

190272

237264

278258

300248

40 41388

92384

144372

194363

241356

282350

300332

50 37489

91482

141476

191465

237453

278445

296425

60 35589

87580

137572

187559

235545

273537

293514

Max cont. 75 34740

85730

135716

185702

232686

268672

291651

Max int. 90 29890

82879

130861

175845

222825

258808

266784

BMS125Pressure [MPa]

Max cont.

Max int.

3.5 7 10.5 14 17.5 20.5 22.5

Flow

[l/m

in]

15 54115

117113

179108

235105

293101

34896

37590

30 55231

118226

180221

238217

298210

351205

377198

40 54309

120305

180296

243289

303283

355279

377265

50 51389

118384

177379

240370

298360

351354

372338

60 48468

114461

173455

235445

295433

347427

369409

Max cont. 75 42589

109581

169570

232559

292546

342535

366518

Max int. 90 38708

103699

163685

220673

279656

327643

334624

BMS160Pressure [MPa]

Max cont.

Max int.

3.5 7 10.5 14 17.5 20.5 22.5

Flow

[l/m

in]

15 7091

14789

22885

30083

37479

44476

47771

30 72182

150178

230173

304170

380165

447161

479155

40 74243

151240

230232

310227

366222

451219

479208

50 71305

147301

226297

306290

380283

447278

473265

60 68368

143362

220357

300349

376340

442335

469321

Max cont. 75 64463

138456

216448

296439

372429

437420

465407

Max int. 90 60556

133549

208538

280528

352515

416505

425490

44145

Torque: 45 [Nm]Rotational speed: 145 [1/min]

4 of 12 | © Rolltorq | 2020-01 Rev. 2 | rolltorq-bms

BMS200Pressure [MPa]

Max cont.

Max int.

3.5 7 10.5 14 17.5 20.5 22.5Fl

ow [l

/min

]

15 8773

18471

28568

37466

46763

55761

59656

30 89145

187142

287139

379136

474132

560129

599124

40 92194

187192

287186

387182

482178

564175

599166

50 88244

182241

282238

382232

474226

560223

591212

60 84295

175290

275286

374280

469272

555268

586257

Max cont. 75 77370

170365

270358

369351

464343

550336

581325

Max int. 90 68445

165440

260430

349423

434412

510404

532392

8773

Torque: 87 [Nm]Rotational speed: 73 [1/min]

BMS250Pressure [MPa]

Max cont.

Max int.

3.5 7 10.5 14 17.5 20.5 22.5

Flow

[l/m

in]

15 11458

23456

35854

46953

58450

37748

74245

30 115116

235113

361110

471108

587105

680103

746100

40 115155

235153

355148

473144

591141

684139

751136

50 114194

230192

355189

474185

587180

680175

746169

60 112234

225231

352228

471224

583219

675214

741208

Max cont. 75 109295

220290

349285

467279

578273

669267

735260

Max int. 90 103354

213350

343342

460334

568326

654320

715310

BMS315Pressure [MPa]

Max cont.

Max int.

3.5 7 10.5 14 17.5 20.5 22.5

Flow

[l/m

in]

15 14045

28444

43343

58341

74540

86338

94735

30 14091

28889

43787

58685

74883

86681

95178

40 138121

290120

440116

588113

752111

870109

956106

50 136153

291151

439149

587145

748141

866139

951136

60 134184

286181

435179

583175

744170

862166

947160

Max cont. 75 131231

280228

431224

580220

738214

856210

939204

Max int. 90 125278

272275

421269

570264

718258

826253

899243

Rev. 2 | rolltorq-bms © Rolltorq | 2020-01 | 5 of 12

BMS400Pressure [MPa]

Max cont.

Max int.

3.5 7 10.5 14 15.5 17.5

Flow

[l/m

in]

15 17236

34735

52234

70533

80632

92630

30 17473

35071

52669

70868

80966

93064

40 17397

35296

52993

71091

81389

93586

50 171122

350121

531119

710116

809113

930110

60 168147

343145

522143

705140

801136

924130

Max cont. 75 164185

339183

517179

700176

791171

916163

Max int. 90 160223

325220

503215

680211

766206

886196

BMS500Pressure [MPa]

Max cont.

Max int.

3.5 7 10.5 12 14

Flow

[l/m

in]

15 18031

40330

60729

72128

81627

30 18361

40760

61358

72457

82456

40 18582

40981

61778

72877

83275

50 184103

406102

616100

72498

83395

60 182124

403122

609121

719118

819115

Max cont. 75 180156

401154

606151

712148

815145

Max int. 90 173188

391185

601182

702178

803174

∅82

.5-0

.036

-0.0

71

Mounting surface

2121

A

B 522

2769.5

L1

Max L

6 19.5 T 2-C P (A, B)

1616 10

2x10

2

4-∅13.5

∅106.4

Max 134

Max 54

Max 106x106Max

130

B

5. Rear ViewBMS E4 Flange

4-∅13.5

∅106.4

54

45°

∅13

0

P (A, B)T 2-C6 18.5

∅82

.5-0

.036

-0.0

71

Mounting surface69.5

L1

Max L

B

5

22

27

2121

B

A

1616 10

2x10

2

5. Rear ViewBMS E6 Flange

6 of 12 | © Rolltorq | 2020-01 Rev. 2 | rolltorq-bms

Dimensions and Flanges

5. Rear View2-G ½” (15)G ¼”

(12)2-M10 (12)

6 19.5

∅82

.5-0

.036

-0.0

71

Mounting surface69.5

L1

Max L

B5

22

27

2121

B

A

1616 10

2x10

2

∅10

6.4

∅13

0

4-∅13.5

54

BMS E2 Flange

∅12

5 0 -0

.063

Mounting surface

G ¼” (12) 2-M10 (12) 2-G ½” (15)

5. Rear ViewBMSW Flange

Rev. 2 | rolltorq-bms © Rolltorq | 2020-01 | 7 of 12

BMS Dimensions

Catalogue Number L L1 B Weight

mm mm mm kg

BMS80 170.0 125.5 11.0 9.8

BMS100 173.5 129.0 14.5 10.0

BMS125 178,0 133.5 19.0 10.3

BMS160 184.0 139.5 25.0 10.7

BMS200 191.0 146.5 32.0 11.1

BMS250 200.0 155.5 41.0 11.6

BMS315 212.0 167.5 53.0 12.3

BMS400 226.0 181.5 67.0 13.2

BMS500 239.0 194.5 80.0 14.3

BMSW Dimensions

Catalogue Number L L1 B Weight

mm mm mm kg

BMSW80 127.5 83.0 11.0 10.4

BMSW100 131.0 86.5 14.5 10.6

BMSW125 135.5 91.0 19.0 11.0

BMSW160 141.5 97.0 25.0 11.4

BMSW200 148.5 104.0 32.0 11.8

BMSW250 157.5 113.0 41.0 12.3

BMSW315 169.5 125.0 53.0 12.9

BMSW400 183.5 139.0 67.0 13.8

BMSW500 196.5 152.0 80.0 14.7

8 of 12 | © Rolltorq | 2020-01 Rev. 2 | rolltorq-bms

5. Rear ViewBMSS Dimensions

G ¼” (12) 2-M10 (12) 2-G ½” (15)Mounting surface

O-ring 100 x 3

External spline

12DP 12/24ANS B92.1-76

min ∅

4

4-M10 (15)

BMSS Dimensions

Catalogue Number L L1 B Weight

mm mm mm kg

BMSS80 124.0 79.5 11.0 7.9

BMSS100 127.5 83.0 14.5 8.1

BMSS125 132.0 87.5 19.0 8.4

BMSS160 138.0 93.5 25.0 8.8

BMSS200 145.0 100.5 32.0 9.2

BMSS250 154.0 109.5 41.0 9.7

BMSS315 166.0 121.5 53.0 10.4

BMSS400 180.0 135.5 67.0 11.3

BMSS500 193.0 148.5 80.0 12.1

D – 340 Nm∅25.4 cylindrical, parallel key 6.35x6.35x32

BMS Shaft D

A – 340 Nm∅25 cylindrical, parallel key 8x7x32

BMS Shaft A

B – 770 Nm∅32 cylindrical, parallel key 10x8x45

BMS Shaft B

E – 770 Nm∅25.3 splined 6–25.3x21.4x6.2

BMS Shaft E

Rev. 2 | rolltorq-bms © Rolltorq | 2020-01 | 9 of 12

Shaft extensions

T1 – 950 Nm∅35 tapered 1:10, parallel key 6x6x30

58

68.5

1:10

36

30413

A

A

∅35

∅44

∅4.

5

M20

x1.5

A-A6 0

-0.039

19.1

0 -0.2

BMS Shaft T1

G – 770 Nm∅31.75 cylindrical, parallel key 7.96x7.96x32

BMS Shaft G

6-8.

64 0 -0

.075

∅34

.85 0 -0

.12

M8

30°

R 6,7H – 770 Nm∅34.85 splined 6–34.85x28.15x8.64

A-A

∅28.15 0-0.25

76100

A

A108

20

738

∅35

6x60°

BMS Shaft H

10 of 12 | © Rolltorq | 2020-01 Rev. 2 | rolltorq-bms

0

BMS BMSW

20 40 60 80 100

10

20

30Radial force [kN]

Distance from a flange surface [mm]

max 5kN

max 5kN

Axial and radial forces

AB AB

Direction of rotation

∅32

+0.0

18+0

.002

M8 ∅35

56.5

455A

20C – 770 Nm∅32 cylindrical, parallel key 10x8x45

A-A

108.5

30°

A

35 0 -0

.2

10 0-0.036

BMSW Shaft C

K – 950 Nm∅35 tapered 1:10, parallel key 6x6x30

58

108.5

1:10

36

30413

A

A

∅35

∅44

∅4.

5

M20x

1.5

A-A6 0

-0.039

19.1

0 -0.2

BMSW Shaft K

Rev. 2 | rolltorq-bms © Rolltorq | 2020-01 | 11 of 12

12 of 12 | © Rolltorq | 2020-01 Rev. 2 | rolltorq-bms

Rolltorq can accept no responsibility for possible errors in catalogues, brochures, and other printed material. All the data are for information, not contractual purposes. Rolltorq reserves the right to alter its products without notice. This also applies to products already on order provided that such alterations can be made without changes being necessary in specifications already agreed. All trademarks in this material are property of the respective companies. Rolltorq and Rolltorq logotype are trademarks of Hektos Slawomir Pokraka. All rights reserved.

InformationTechnical information about other products can be found at rolltorq.com.

Sales and ServiceHektos Slawomir Pokraka, Poland+48 22 203 5079 info@hektos.com

Online Saleswww.hektos.eu

Revision History1. 2017-01 Release of rev. 1.1. 2020-01 Release of rev. 2. Performance data improved and updated.