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BMM series cycloid hydraulic motor

Adopts a studded stator and rotor design, which features higher oil distribution accuracy and mechanical efficiency

E-mail:

gavin@cnhydraulicmotor.com

Mobile:

86-18232160688

Product Inquiry

Main Features

● Adopts a built-in rotor and stator design, with higher oil distribution accuracy and mechanical efficiency

● Rolling bearing design, capable of withstanding higher lateral forces

● Imported shaft seal design, high back pressure resistance, can be used in series and parallel

● Convenient forward and reverse switching, stable speed

● Multiple oil ports, output shafts, and flange connection types

BMM Series Specifications

Displacement (ml/r)		8	12.5	20	32	40	50
Flow Rate (LPM)	Continuous	14	18	18	18	20	20
Flow Rate (LPM)	Intermittent	20	25	25	25	25	25
Speed (RPM)	Continuous	1592	1310	819	511	455	364
Speed (RPM)	Intermittent	2275	1820	1137	710	568	455
Pressure (Bar)	Continuous	100	100	100	100	90	70
Pressure (Bar)	Intermittent	140	140	140	140	140	140
Torque (N.m)	Continuous	11	16	25	40	45	46
Torque (N.m)	Intermittent	15	23	35	57	70	88

1. Intermittent refers to the maximum inlet pressure, and continuous working pressure refers to the working pressure difference.

2. The motor should not operate at the highest pressure and highest speed simultaneously.

3. Under intermittent operating conditions, the motor's operating time should not exceed 10%.

4. Maximum operating temperature 80°.

5. The motor's maximum allowable back pressure is 10 MPa, but it is recommended that the back pressure not exceed 5 MPa. If exceeded, an external oil drain pipe should be connected.

6. Before full-load operation, it is recommended to run the motor for 1 hour at less than 40% of the maximum working pressure for break-in.

7. It is recommended to use 68# anti-wear hydraulic oil, viscosity 37-73 cSt, cleanliness ISO 18/13.

BMM Series Motor Performance Parameters

FLOW (LPM)

BMM-8 △P(Bar)

	35	50	70	100		120	140
2	3 228	5 218	8 206	10 156	12 111		1458
4	3 474	5 471	7 463	11 426	13 391		15 331
8	3 953	5 946	7 926	11 884	13 855		15 816
12	2 1444	5 1426	7 1402	10 1360	13 1324		15 1288
15		4 1912	7 1900	10 1861	12 1833		14 1780
20			6 2395	10 2350	11 2328		14 2281

FLOW (LPM)

BMM-12.5 △P(Bar)

	35	50	70	100	120	140
2	6 140	8 136	11 119	16 68	19 35
4	6 296	8 289	12 274	17 229	19 200
8	5 605	8 596	12 583	17 543	20 514	24 469
12	5 912	8 905	11 895	16 859	20 834	24 784
15	5 1152	7 1144	11 1136	16 1102	19 1078	23 1036
20	3 1542	7 1532	10 1521	15 1500	19 1482	22 1437
25	2 1910	6 1891	9 1878	14 1848	18 1828	22 1788

FLOW (LPM)

BMM-20 △P(Bar)

	17	35	50	70	100	120	140
2	3 99	9 96	14 89	19 74	26 42	30 21
4	4 197	9 191	14 182	19 178	26 134	31 112	36 74
8	4 398	3 395	13 391	19 377	27 340	31 319	36 288
12	3 596	8 594	13 588	18 579	26 545	31 523	37 493
15	3 745	8 741	12 738	17 728	25 695	30 684	36 660
20	1 998	6 985	11 991	19 985	24 962	29 916	35 885
25		4 1247	9 1245	14 1242	23 1189	28 1180	33 1176

FLOW (LPM)

BMM-32 △P(Bar)

	20	35	50	70	100	120	140
2	7 61	15 57	21 52	28 47	40 16
4	7 126	15 121	21 114	29 106	41 82	48 67	57 49
8	7 250	15 244	21 239	29 231	41 207	49 194	58 167
12	6 378	13 374	20 369	28 362	40 338	48 322	58 297
15	4 476	12 472	18 468	27 462	39 441	47 429	57 406
20	3 633	10 630	17 627	25 619	37 601	46 585	55 566
25	1 791	8 789	15 787	23 783	35 766	43 753	52 732

FLOW (LPM)

BMM-40 △P(Bar)

	30	50	70	85	100	120
2	16 45	27 40	36 34	44 28	51 17
4	16 96	27 93	37 85	44 79	52 65	62 52
8	15 197	26 195	36 182	44 176	52 166	63 154
12	14 293	25 287	35 282	43 277	51 268	62 257
15	13 371	24 365	34 360	42 355	50 347	62 338
20	10 497	21 492	31 487	39 480	48 472	59 463
25	7 622	19 617	29 612	37 607	44 600	56 591

FLOW (LPM)

BMM-50 △P(Bar)

	15	30	50	70	100
2	11 37	23 33	36 27	50 22
4	11 76	22 73	36 68	50 63	70 55
8	11 157	21 154	35 149	50 145	71 137
12	11 237	20 234	33 231	49 226	71 218
15	10 296	18 295	32 294	47 288	69 282
20	8 395	14 395	29 393	44 390	64 381
25	4 498	10 496	25 494	40 490	59 484

BMM Series Motor Flange/Rear Oil Port

3-C Connection Thread	M6	Depth 10mm

	1/4-28UNF-2B	Depth 10mm

A/B Oil Port	G3/8	Depth 12mm
	9/16-19UNF-2B	Depth 12mm

T Drain Port	G1/8	Depth 8mm

	3/8-24UNF	Depth 8mm

Model	M, U Flange		F Flange
	H	H1	H	H1

BMM-8	110.7	5.8	116.7	5.8
BMM-12.5	113.8	8.9	119.8	8.9
BMM-20	119.3	14.4	125.3	14.4
BMM-32	127.4	22.5	133.4	22.5

BMM-40	133.8	28.9	139.8	28.9
BMM-50	140.5	35.6	146.5	35.6

BMM Series Motor Flange/Side Oil Port

3-C Connection Thread	M6	Depth 10mm

	1/4-28UNF-2B	Depth 10mm

A/B Oil Port	G3/8	Depth 12mm
	9/16-19UNF-2B	Depth 12mm

T Drain Port	G1/8	Depth 8mm

	3/8-24UNF	Depth 8mm

Model	M, U Flange		F Flange
	H	H1	H	H1

BMM-8	110.7	5.8	116.7	5.8
BMM-12.5	113.8	8.9	119.8	8.9
BMM-20	119.3	14.4	125.3	14.4
BMM-32	127.4	22.5	133.4	22.5

BMM-40	133.8	28.9	139.8	28.9
BMM-50	140.5	35.6	146.5	35.6

BMM Series Motor Flange Output Shaft

A1 φ16 shaft, key 5X5X16

A2 φ15.875 shaft, key 4.8X4.8X19.5

A3 B17X14 involute spline shaft DIN5482

Pressure that the output shaft seal can withstand

BMM Series Motor Rotation Direction

Standard Rotation

Viewed from the output shaft end

Oil port A inlet pressure oil --- clockwise rotation

Oil port B inlet pressure oil --- counterclockwise rotation

BMM series cycloid hydraulic motor

Adopts a studded stator and rotor design, which features higher oil distribution accuracy and mechanical efficiency

E-mail:

zhang@cnhydraulicmotor.com

WhatsApp:

+8615630356050

Product Inquiry

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Product Inquiry

We will contact you within one working day. Please pay attention to your email.

Submit Message

zhang@cnhydraulicmotor.com

86-15 630356050

Address

No. 215 Jianhua South Street, Yuhua District, Shijiazhuang City, Hebei Province, China

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