BMER-300 BMER-375 BMER-475 Hydraulic Orbit Motor | High Torque Cycloid Motor

The BMER Series high-torque hydraulic orbit motors from Chengyuan Hydraulic are premium driving components fully compatible with Danfoss OMER and Eaton standards. Utilizing advanced disc valve distribution and optimized geroler sets, these motors are specifically engineered for low-speed, high-torque (LSHT) applications. The BMER-300A12101 offers exceptional high-pressure performance and radial load capacity. Every motor undergoes 100% simulated full-load and leakage testing to ensure responsive movement and steady output in the harshest environments, guaranteeing 100% original-place interchangeability.

Technical Specifications (BMER-300):

• Series: BMER Series (Wheel/Standard configuration)

• Displacement: 300 $cm^3/rev$

• Rated Pressure: 200 bar (20 MPa)

• Peak Pressure: 240 bar (24 MPa)

• Rated Torque: 830 $N \cdot m$

• Peak Torque: 1000 $N \cdot m$

• Speed Range: 10 – 250 rpm

• Shaft Specification: 32mm Keyed / 14T Splined / 35mm Tapered (Per code)

• Mounting Flange: 4-Bolt Magneto / Wheel Mount

Key Technical Advantages:

• Disc Valve Compensation: The independent disc valve structure features automatic wear compensation. This maintains high volumetric efficiency even after prolonged high-pressure use, ensuring smooth operation at low speeds without “judder.”

• High-Performance Geroler Set: The integrated rollers in the geroler set minimize friction during startup, significantly boosting mechanical efficiency and providing higher starting torque compared to standard gerotor designs.

• Reinforced High-Pressure Shaft Seal: Equipped with a heavy-duty shaft seal capable of handling significant backpressure. This often allows the motor to operate without a drain line in specific circuits, simplifying system plumbing.

• Heavy-Duty Tapered Roller Bearings: The output shaft is supported by oversized tapered roller bearings, providing excellent radial and axial load capacity. This allows direct drive of wheels or sprockets without auxiliary support.

Application Areas:

• Agricultural Machinery: Combine harvester drives and seeder systems.

• Construction Equipment: Skid steer loader drives and mini-excavator swing motors.

• Material Handling: Sweeper drives, forklift attachments, and conveyor systems.

• Industrial Machinery: Plastic injection screw drives and heavy-duty winches.

Expert Maintenance Tips:

• Avoid High-Speed No-Load Operation: Orbit motors are designed for LSHT tasks. Continuous high-speed rotation without load can lead to excessive wear on the geroler set.

• Case Drain Management: For systems with backpressure exceeding 50 Bar, connecting the case drain line is highly recommended to protect the shaft seal and reduce internal heat buildup.

• Oil Temperature Regulation: Maintain operating temperatures between $30°C$ and $60°C$. Excessive heat reduces oil viscosity, compromising low-speed stability and volumetric efficiency.