BM4 Series Hydraulic Motor | BM4-800 BM4-630 BM4-490 | LSHT Cycloid Motor

BM4 (BMS) Series Heavy-Duty Disc Valve Hydraulic Motors

Product Overview: The BM4 Series (also widely known as the BMS Series) is a high-performance, heavy-duty orbital hydraulic motor utilizing advanced Disc Valve technology. This category features the flagship high-displacement models: BM4-800, BM4-630, and BM4-490.

Engineered for the most grueling operating conditions, BM4 motors incorporate Geroler gear set technology with integrated rollers to minimize friction and maximize startup torque. The independent disc valve compensates for wear under pressure, maintaining peak volumetric efficiency throughout the motor’s lifespan. These motors are the premier choice for heavy-duty winches, mining machinery, large injection molding machines, construction piling rigs, and agricultural harvester drives.

Key Technical Advantages:

• Elite Torque Capacity: Specifically designed for applications requiring massive breakout torque and sustained load resilience, with peak torque exceeding 1500 Nm.

• High Volumetric Efficiency: The independent valve plate ensures stable performance and minimal internal leakage even during prolonged high-pressure cycles.

• Robust Bearing Architecture: Equipped with oversized tapered roller bearings, the output shaft handles significant radial and axial loads—ideal for direct-drive wheel and gear applications.

• Technical Decoding:

  • BM4-800: The largest displacement model in the series, providing maximum power density and burst capability.

  • BM4-630 / BM4-490: Offers the optimal balance between high speed and high torque for mid-to-large vehicle propel drives.

Detailed Specifications & Parameters:

• Core Series: BM4 (BMS) Disc Valve Hydraulic Motor

• Featured Model Matrix: BM4-800, BM4-630, BM4-490, BM4-400, BM4-315

• Core Performance Specs:

  • Displacement Range: 80 cc/rev up to 800 cc/rev.

  • Rated Pressure: Continuous up to 200 Bar (2900 PSI); Intermittent peaks exceeding 250 Bar (3600 PSI).

  • Torque Capability: Continuous torque up to 1200 Nm, with intermittent peaks reaching 1600 Nm.

  • Flow Capacity: Supports continuous flow inputs of 75-100 L/min.

  • Mounting Standards: E2/E4 4-bolt flanges, 2-Bolt SAE A, and Wheel Mount options.

  • Shaft Options: 32mm Keyed, Splined, or 35mm Tapered shaft options available.