BMM Series Cycloidal Hydraulic Motor

Description :

The BMM series motor is a compact, cost-effective cycloidal hydraulic motor featuring shaft distribution flow and a Gerotor gear set design.

It offers a small volume, high power, and low weight.

Key advantages include advanced manufacturing for the Gerotor gear set, ensuring high efficiency and durability, and a robust shaft seal capable of withstanding high pressure for use in parallel or series configurations.

Its innovative design balances power and lightweight construction effectively.

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Product Description:

The BMM Series Cycloidal Hydraulic Motor is a compact low-speed high-torque (LSHT) orbital hydraulic motor designed for applications requiring reliable performance, compact dimensions, and high starting torque. Featuring a precision-engineered Gerotor gear set, the BMM motor delivers smooth operation, excellent efficiency, and stable output torque even under demanding working conditions.

The BMM Series is widely used in agricultural machinery, conveyors, lawn equipment, material handling systems, construction machinery, and various industrial hydraulic drive applications.

Type		BMM8	BMM12.5	BMM20	BMM32	BMM40	BMM50
Geometri displacement	cm3/rev.)	8.2	12.9	19.9	31.6	39.8	50.3
Max. speed (rpm)	Rated	1537	1256	814	513	452	358
	Cont.	1950	1550	1000	630	500	400
	Int.	2450	1940	1250	800	630	500
Max. torque (N*m)	Rated	8	13	19	31	37	33
	Cont.	11	16	25	40	45	46
	Int.	15	23	35	57	70	88
	Peak	21	33	51	64	82	100
Max. output (Kw)	Rated	1.3	1.7	1.7	1.7	1.7	12
	Cont.	1.8	2.4	2.4	2.4	2.2	1.8
	Int.	2.6	3.2	3.2	3.2	3.2	3.2
Max. pressure drop (Mpa)	Rated	9	9	9	9	8.5	6
	Cont.	10	10	10	10	9	7
	Int.	14	14	14	14	14	14
	Peak	20	20	20	16	16	16
Max.flow (L/min)	Rated	14	18	18	18	20	20
	Cont.	16	20	20	20	20	20
	Int.	20	25	25	25	25	25
Weight (kg)		1.9	2	2.1	2.2	2.3	2.4

Working Principle

The BMM hydraulic motor operates based on the Gerotor principle.

Pressurized hydraulic oil enters the motor through the inlet port.
The oil is distributed to the internal Gerotor rotor-stator assembly.
Pressure differences generate rotational force.
The rotor drives the output shaft to produce mechanical motion.
Hydraulic oil exits through the return port and returns to the hydraulic system.

This design ensures efficient energy conversion and smooth torque output across a wide operating range.

Product Features

Compact and lightweight design
Advanced Gerotor gear set technology
High starting torque and low-speed stability
Smooth and reliable operation
High volumetric efficiency
Bi-directional rotation
Low noise and vibration
Durable shaft seal design
Easy installation and maintenance
Multiple shaft and mounting options available
Long service life under continuous operation

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BMM Series Cycloidal Hydraulic Motor

Working Principle

Product Features

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