The BM4 Series Orbital Hydraulic Motor is a premium low-speed, high-torque solution engineered for demanding industrial and mobile applications. Utilizing an advanced gerolor design, this motor ensures superior distribution accuracy and exceptional mechanical efficiency, providing stable and powerful torque output for the most rigorous operational environments.
Designed for versatility and durability, the BM4 series supports both series and parallel connections and offers a wide range of customizable flanges, output shafts, and oil ports. Whether you are upgrading existing machinery or designing new hydraulic systems, this motor delivers the precision and reliability required to optimize your equipment's performance and lifespan.
| Design Type | Gerolor Gear Design | Operating Temp (Normal) | 20°C - 60°C |
|---|---|---|---|
| Max System Temp | 90°C (Max 1 hour) | Filtration Accuracy | 10-30 Microns |
| Pollution Level | ≤ 19/16 ISO Standard | Kinematic Viscosity | 42-74mm²/s @ 40°C |
| Connection Mode | Series or Parallel | Return Port Pressure | Relief required > 10MPa |
| Load Capacity | High Axial/Radial (BM5-BM10) | Optimal Load Rate | 1/3 to 2/3 Rated Condition |
Equipped with a double-rolling bearing design to handle significant lateral loads without compromising stability.
Optimized for longevity with a recommended break-in period at 30% rated pressure for maximum durability.
Shaft rotation direction and speed can be adjusted smoothly and easily for precise operational control.
Credible shaft seal design allows the motor to withstand higher pressures in both parallel and series setups.
Offers a wide variety of connection types for flanges, output shafts, and oil ports to fit any system.
The advanced gerolor mechanism reduces internal friction and increases overall volumetric efficiency.
Real-time monitoring of BM series motor stock levels to ensure timely project delivery.
Rigorous testing protocols for distribution accuracy and mechanical efficiency for every unit.
Scheduled reminders for oil filtration and viscosity checks to prevent system contamination.
Tracking operating temperatures and pressures to maintain the 1/3 to 2/3 rated condition.
Seamless coordination of flange and shaft variants from warehouse to installation site.
Direct access to engineering experts for series and parallel connection configurations.
| Performance Metric | Standard Motor | BM4 Series Motor |
|---|---|---|
| Operational Life | Moderate | High (with 30% break-in) |
| Mechanical Efficiency | Baseline | Enhanced Gerolor Efficiency |
| Lateral Load Support | Single Bearing | Double-Rolling Bearing |
| Installation Flex | Limited Options | Multi-Flange/Shaft Types |
| Pressure Tolerance | Standard | High-Pressure Shaft Seals |
The normal working oil temperature should be between 20°C and 60°C, with a maximum system operating temperature of 90°C for no more than one hour.
We recommend loading the motor at 30% of the rated pressure for one hour before full operation and ensuring the motor is completely filled with oil before loading.
Filtration accuracy should be 10-30 microns, and the solid pollution level must not exceed 19/16. Installing a magnetic block at the tank bottom is highly recommended.
Yes, they can be used in series or parallel. If the oil return port pressure exceeds 10MPa, pressure relief must be managed via the leakage port, ideally connected to the tank.
The output shafts of the BM5, BM6, BM7, BM8, and BM10 series motors are specifically designed to bear larger axial and radial loads.
The kinematic viscosity should be 42-74mm²/s at 40°C, though oil selection can be adjusted based on actual ambient temperature and working conditions.
