BM4 Series Hydraulic Motors for Plastic Machines

Description and Features

BM4 Series orbital hydraulic motors are small volume hydraulic motors with design of spool valve and Geroler element. They have the following product features:

• Advanced design of spool valve and Geroler element, smaller size and compacter structure compared with other type hydraulic motors.
• Credible design of shaft seal, which can bear high pressure.
• Direction of shaft, rotation and speed can be controlled easily and smoothly.
• Stepless speed variation, mini. stable speed could be 15r/m, easy to install, low costs.
• Could be used in parallel or in series connection in the hydraulic systems.
• Low rotation inertia, easy to start with load, both positive and negative rotation being allowed, and no need to stop the rotation for changing the rotation direction.
• High efficiency and economical, suitable for medium duty applications.
• A variety of connection dims. options of flange, output shaft and oil port.

BM4 Series orbital hydraulic motors have wide applications, mainly applied to the slewing mechanisms of machinery in agriculture, light industry, lifting and transportation, mining and construction etc, as below,

• Agricultural machinery: Combined harvester, seed sower, rotary cultivator , lawn mower, spray machine, fodder mixing machine and drilling machine etc.
• Fishing machinery: net hauler.
• Light industrial machinery, reeling machine, textile machine, printing machine and commercial washing machine etc.
• Construction machinery: road roller, cement mixer and sweeper etc.

BM4 series orbital hydraulic motors have geroler element and integrated output shaft with distributing valve, as indicated in the assembly drawing, Drawing1 in next page. It has the following features of performance:

• Advanced design of spool valve distribution, realizing small size, compact structure and higher distributing accuracy.
• Adopt geroler element, ensuring higher mechanical efficiency and longer lift-time under high back pressures.
• Adopt double deep groove ball bearings, ensuring much more radial load and axial load, reducing friction forces and improving the mechanical efficiency.

Specification

Note:

1. Intermittent means the entrance of the maximum pressure; continuous working pressure means the differential pressure.

2. Motor should not work under the highest pressure and the maximum speed.

3. The running time should not exceed 10% under intermittent working conditions.

4. Recommending N68 anti-wear hydraulic oil, viscosity 37-73cSt, cleanliness ISO18/13.

5. The Maximum working temperature is 80 °C.

6. One hour running time under 40% of maximum working pressure is recommended before full capacity working.

7. The maximum allowable back pressure is 10MPa, but the recommended back pressure should not exceed 5MPa.a leaking pipes is needed when exceeding.