BMH Series Hydraulic Motor
The BMH series of cycloidal hydraulic motors are shaft-type hydraulic motors. This series features a column-type rotor-stator assembly designed to operate at high pressures and provide automatic compensation, resulting in high efficiency, excellent stability, and a long service life.
Description:
BMH / HD hydraulic motors are designed for higher-pressure mobile drive applications where robust output and dependable operation are required. With 195-490 cm³/rev displacement, up to 17.5 MPa continuous pressure and up to 830 N·m torque, they suit heavy-duty hydraulic drives in mobile and construction machinery.
Key Specifications
- Nominal displacement options: 195–490 cm³/rev.
- Actual displacement range: 195.7–491 cm³/rev.
- Max. continuous working pressure difference: up to 17.5 MPa.
- Max. continuous torque: up to 830 N·m.
- Max. continuous flow: 75 L/min.
- Max. inlet pressure: 20 MPa continuous / 22.5 MPa intermittent.
- Max. back pressure with drain port: 17.5 MPa continuous / 20 MPa intermittent.
BMH Series Technical Data
Compare model-specific displacement, speed, torque, pressure difference and flow ratings for preliminary selection.
BMH-195
- Actual Displacement: 195.7 cm³/rev.
- Max. Speed: 375 / 455 rpm
- Max. Torque: 490 / 555 N·m
- Max. Working Pressure Difference: 17.5 / 20 MPa
- Max. Flow: 75 / 90 L/min
Continuous / Intermittent values.
BMH-245
- Actual Displacement: 246.2 cm³/rev.
- Max. Speed: 295 / 360 rpm
- Max. Torque: 595 / 702 N·m
- Max. Working Pressure Difference: 17.5 / 20 MPa
- Max. Flow: 75 / 90 L/min
Continuous / Intermittent values.
BMH-310
- Actual Displacement: 311.7 cm³/rev.
- Max. Speed: 235 / 285 rpm
- Max. Torque: 730 / 815 N·m
- Max. Working Pressure Difference: 17.5 / 20 MPa
- Max. Flow: 75 / 90 L/min
Continuous / Intermittent values.
BMH-390
- Actual Displacement: 391.4 cm³/rev.
- Max. Speed: 185 / 225 rpm
- Max. Torque: 815 / 950 N·m
- Max. Working Pressure Difference: 15.5 / 19 MPa
- Max. Flow: 75 / 90 L/min
Continuous / Intermittent values.
BMH-490
- Actual Displacement: 491 cm³/rev.
- Max. Speed: 146 / 180 rpm
- Max. Torque: 830 / 1,030 N·m
- Max. Working Pressure Difference: 12.5 / 16 MPa
- Max. Flow: 75 / 90 L/min
Continuous / Intermittent values.
Pressure Limits
Max. Inlet Pressure:
20 MPa continuous / 22.5 MPa intermittent / 25 MPa peak.
Max. Back Pressure with Drain Port:
17.5 MPa continuous / 20 MPa intermittent / 22.5 MPa peak.
Operating Definitions
Continuous values refer to the maximum values at which the motor can operate continuously.
Intermittent values refer to the maximum values at which the motor operates for up to 6 seconds within one minute.
Peak values refer to the maximum values at which the motor operates for up to 0.6 seconds within one minute.
Values shown are for preliminary model selection. Refer to the PDF datasheet for rated and peak values, detailed performance data, installation dimensions and ordering information.
Available Configurations
Multiple mounting, shaft, port, rotation and finish options are available for different equipment and hydraulic system requirements.
Structures & Mounting
• Standard BMH configuration
• Horizontal-port configurations
• 2-bolt, 4-bolt and 6-bolt diamond flanges
• Pilot Ø82.5 mm options
Shaft Options
• Straight keyed shafts
• Straight-sided spline shafts
• Involute spline shafts
• Metric and imperial shaft options
Port Options
• G thread options
• Metric thread options
• UNF O-ring ports
• NPTF ports
• Subplate and horizontal-port configurations
Rotation & Special Options
• Standard rotation
• Reverse rotation
• Standard or high-pressure shaft seal
• Unpainted, blue, black or silver-gray finish
Available configurations may vary by displacement and installation type. Please provide the existing model, nameplate, mounting dimensions, shaft details and port specifications for final confirmation.
BMHD Reinforced Option
The BMHD reinforced shaft-distribution motor uses radial bearing support for greater radial load capacity, high mechanical efficiency and improved impact resistance. Final selection should be confirmed according to the application, mounting interface and load requirements.
Designed for higher-pressure operation
Heavy-duty Drive Capability
Supports stable low-speed torque for demanding mobile hydraulic drive functions.
Robust Orbit Motor Design
Built for continuous operation in heavy-duty hydraulic systems.
Reliable Sealing Performance
Helps reduce leakage and supports dependable service life under pressure.
Mobile and Construction Machinery Use
Suitable for mobile equipment, construction machinery and agricultural attachments.
Applications
Harvesting equipment
Tractors & attachments
Precision Farming Solutions
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