BMER cycloidal hydraulic motor

I. Core Structure and Technical Advantages

1. High-Speed Flow Distribution + Automatic Compensation: Superior Efficiency and Lifespan

Utilizing a high-speed flow distribution structure (the distribution plate rotates 6 times faster than the output shaft), it achieves extremely high oil distribution accuracy, minimal hydraulic shock, no crawling at low speeds, and smooth operation at high speeds.

The flow distribution mechanism features automatic wear compensation, resulting in a volumetric efficiency decrease of ≤3% over long-term use, extending the overall machine lifespan by 30%+ compared to ordinary end-face flow distribution.

Optimized insert-type stator and rotor pair: starting pressure ≤0.9MPa, mechanical efficiency ≥93%, volumetric efficiency ≥95%.

2. Needle Roller Bearings + Reinforced Shaft System: High Load Capacity

The output shaft is equipped with standard needle roller bearings and reinforced bushings, capable of withstanding large radial and axial forces, allowing direct drive of heavy-duty mechanisms without additional support.

The shaft system boasts high rigidity, adapting to strong impact and vibration conditions, eliminating shaft runout and premature failure.

3. High Back Pressure Seal, Series/Parallel Compatible

Imported combined rotary seal, maximum back pressure up to 8MPa (recommended ≤4MPa), can be used in series/parallel; external drain pipe required for series connection.

The seal is oil-resistant, wear-resistant, and temperature-resistant (-20℃～80℃), ensuring no external leakage during long-term continuous operation and long maintenance intervals.

4. Compact Structure, Flexible Installation, Easy Replacement

Small size and light weight; standardized flange/shaft head/oil port design, directly replaceable with Danfoss, White (RE), M+S, and other motors of the same specifications.

Supports frequent forward and reverse switching, with fast reversing response and no impact.

5. Excellent Efficiency Maintenance

Slow efficiency decay across the entire series, maintaining high volumetric efficiency even during long-term continuous operation, reducing energy consumption and oil temperature.

II. Core Technical Parameters (Full Series)

Parameter Range Remarks

Displacement 125–750 ml/r BMER-125/160/200/230/250/300/350/375/475/540/750

Continuous Working Pressure 20–20.5 MPa

Peak Pressure 24–28 MPa

Continuous Torque 325–1600 N·m Increasing with displacement

Peak Torque 488–2400 N·m

Speed Range 4–360 r/min Stable at low speed, smooth at high speed

Maximum Flow Rate 45–270 L/min

Weight 12–45 kg Depending on model

Back Pressure Tolerance ≤8 MPa Recommended ≤4 MPa

Operating Oil Temperature -20℃～80℃ Recommended 68# Anti-wear Hydraulic Oil

III. Typical Application Scenarios (High-Efficiency Heavy-Duty Full Coverage)

Construction Machinery

Excavators: Travel drive, slewing platform, attachments (breaker/grapple) rotation

Loaders/Bulldozers: Travel motor, bucket rotation

Road Rollers/Pavers: Wheel drive, bucket rotation

Drilling Rigs: Drill rod rotation, track travel

Mining/Metallurgy/Crane

Coal Mining Machines: Traction drive, drum rotation

Conveyors/Windlocks: Drum drive, hoisting

Port Cranes/Forklifts: Slewing, lifting, travel drive

Agriculture/Fisheries/Marinecraft

Harvesters/ Rotary Tillers: Header, Walking, and Conveying Drives

Fishing Vessels: Net Hoisting Machines, Anchor Windlass, Hatch Door Opening and Closing

Ships: Steering Gear, Winches, Lifeboat Drives

Industrial Equipment: Injection Molding Machines: Pre-plasticizing Melting, Mold Opening and Closing

Machine Tools: Spindle, Feed, Indexing Mechanisms

Petroleum Machinery: Tubing Wrench, Wellhead Drives

Sanitation/Light Industry: Sweepers, Snowplows, Packaging Machine Rotary Mechanisms

IV. Product Value

The BMER series boasts high-speed flow distribution, high efficiency and stability, strong load-bearing capacity, long service life, and easy replacement as its core advantages. It is the preferred choice for medium- and high-pressure, high-efficiency, heavy-duty hydraulic transmission, and can replace imported products of the same type, significantly reducing equipment procurement and maintenance costs, and improving overall machine reliability and operating efficiency.