BMER BMP Orbit Motor | BMER-300 BM6-310 BMTE-315 | High Torque Hydraulic Motor

Chengyuan Hydraulic presents the BMER, BMP, and BMTE Series Hydraulic Orbit Motors, high-torque execution components engineered for global industrial and mobile standards. These motors serve as premium replacements for international brands like Danfoss, Eaton, and White. Key models, such as the BMER-300A12101, utilize advanced Geroler gear set technology combined with sophisticated distribution logic to ensure high starting torque and volumetric efficiency at low speeds. Chengyuan ensures 100% Drop-in Interchangeability in mounting flanges, output shaft splines, and porting configurations. Backed by our 100% Simulation Load Testing, each motor is verified for torque output and thermal stability under rated pressure, ensuring extended service life for municipal, agricultural, and industrial machinery.

Technical Specifications 

• Compatible Series: BMER, BMP, BMTE, BM6

• Model Examples: BMER-300A12101, BM6-310, BMER-2-300WD, BMTE-315

• Displacement Range: 50 ml/r to 800 ml/r (300 ml/r is standard for BMER)

• Rated Pressure: 17.5 MPa (175 Bar)

• Peak Pressure: 25 MPa (250 Bar)

• Max Torque: 700 – 1500 N.m (Model dependent)

• Speed Range: 5 – 600 r/min

• Shaft Options: A2 (25mm Keyed), A12 (31.75mm Splined), WD (Wheel Motor Hub)

• Sealing: High-pressure shaft seals (capable of withstanding up to 15MPa backpressure without a drain line)

Key Technical Advantages:

• Advanced Geroler Gear Set: Unlike standard Gerotors, the BMER series features precision-engineered rollers within the gear set. This reduces starting friction, allowing for vibration-free operation at low speeds (under 10rpm) and providing superior breakout torque.

• High-Pressure Shaft Seal: Equipped with a reinforced shaft seal structure, these motors can handle significant backpressure. In most standard applications, the seal maintains integrity for the long term even without an external drain line.

• Optimized Flow Distribution: Featuring a precision-honed spool valve, the motor ensures synchronized oil distribution with rotor movement. This process reduces mechanical noise and maintains volumetric efficiency above 95%.

• Versatile Mounting Configurations: Available in standard 4-bolt, 2-bolt, and specialized WD Wheel Flanges (e.g., BMER-2-300WD). The WD configuration allows the motor to be recessed into the wheel hub, saving critical axial space for mobile equipment.

Application Areas:

• Agricultural Machinery: Seeder drives, harvester reels, and agricultural sprayers.

• Municipal Engineering: Street sweeper brush drives, snow plows, and small cranes.

• Industrial Equipment: Conveyor drives, injection molding die-adjustment, and hydraulic winches.

• Travel Drives: Compact wheel loaders and aerial work platforms.

Expert Maintenance Tips:

• Initial Break-in Period: After installation, it is recommended to run the motor at 30% of its rated load for 15-30 minutes. This facilitates the proper bedding-in of the Geroler friction surfaces.

• Filtration Integrity: Orbit motors are sensitive to solid contaminants. Ensure the system is equipped with filtration of at least 20 microns to prevent scoring on the rotor faces, which leads to efficiency loss.

• Side Load Management: If the output shaft is connected to a sprocket or gear, ensure the radial load does not exceed the limits specified in the technical manual to prevent premature bearing failure and subsequent seal leakage.