BMP200 Danfoss OMP Interchange Orbital Motor 200cc 14MPa

Product Overview

The BMP200 is a mid-range model in the BMP Series of orbital hydraulic motors, featuring a geometric displacement of 194.5 cm³/rev (11.87 in³/rev), shaft distribution flow architecture, and Gerotor gear set design. The BMP Series is the economy-class foundation of the orbital motor family, spanning displacements from 36 to 486.5 cm³/rev to cover a broad range of light-to-medium duty drive requirements.

Key technical features of the BMP200 include: a shaft distribution flow design that integrates the distribution shaft with the rotor for reduced leakage paths and a compact envelope; Gerotor gear set manufactured with advanced tooling for high volumetric efficiency, compact volume, and low weight. The output shaft is supported by deep groove ball bearings capable of accommodating certain axial and radial loads. The high-pressure shaft seal design enables the motor to operate in parallel or series hydraulic circuits.

As a direct interchange unit for the Danfoss OMP Series and Eaton Char-Lynn H Series, the BMP200 is dimensionally compatible with OEM motors in mounting flange (2-bolt, 106.4 mm pilot diameter), shaft extension (φ25.4 mm SAE 6B splined), and port connection (G1/2 thread). The BMP Series can replace equivalent orbital motors from Danfoss OMP, M+S MP, Eaton Char-Lynn H Series, and other brands without modification to mounting brackets, couplings, or hydraulic piping. Every unit undergoes 100% simulated operating condition testing prior to shipment, verifying displacement accuracy, pressure integrity, and torque output consistency.

Technical Specifications 

• Model: BMP200 (also available: BMP36 / BMP50 / BMP80 / BMP100 / BMP125 / BMP160 / BMP250 / BMP315 / BMP400 / BMP500)

• Series: BMP Series (Economy-class orbital hydraulic motor)

• Motor Type: Shaft distribution flow orbital hydraulic motor (LSHT)

• Gear Set Type: Gerotor

• Geometric Displacement: 194.5 cm³/rev (BMP200)

• Maximum Continuous Speed: 310 rpm

• Maximum Intermittent Speed: 385 rpm

• Maximum Continuous Torque: 360 N·m

• Maximum Intermittent Torque: 440 N·m

• Maximum Peak Torque: 540 N·m

• Maximum Continuous Pressure Drop: 14 MPa

• Maximum Intermittent Pressure Drop: 17.5 MPa

• Maximum Peak Pressure Drop: 22.5 MPa

• Maximum Continuous Output Power: 10 kW

• Maximum Intermittent Output Power: 12 kW

• Maximum Continuous Flow: 60 L/min

• Maximum Intermittent Flow: 75 L/min

• Mounting Flange: 2-bolt, 106.4 mm pilot diameter

• Output Shaft: φ25.4 mm SAE 6B splined shaft

• Port Connection: G1/2 thread

• Drain Port: G1/4

• Bearing Type: Deep groove ball bearing

• Weight: Approximately 6.4 kg

• Recommended Fluid: Anti-wear hydraulic oil, viscosity 20–300 cSt

• Maximum Case Return Pressure: 10 MPa (with drain line)

Sources: BMP Series product technical data.

Key Technical Advantages

1. Shaft Distribution Flow with Gerotor Gear Set — Efficient Power Conversion in a Compact Envelope

The BMP200 employs a shaft distribution flow architecture in which the distribution shaft and rotor are highly integrated, reducing leakage paths and overall envelope size and weight. Combined with Gerotor gear set design, the motor achieves efficient power conversion within a compact housing. Advanced manufacturing equipment ensures gear set machining accuracy, delivering high volumetric efficiency and extended service life.

2. High-Pressure Shaft Seal with Series/Parallel Compatibility — System Integration Flexibility

The BMP200 shaft seal system is specifically engineered to tolerate elevated return pressures, making the motor suitable for series circuits and multi-motor parallel loops. In series systems, return backpressure accumulates across multiple motors. The BMP200 high-pressure shaft seal design eliminates the need for individual case drain lines for each motor, simplifying hydraulic circuit plumbing and reducing installation cost and potential leak points. With a drain line connected, maximum case return pressure reaches 10 MPa.

3. Deep Groove Ball Bearing Support and Compact Lightweight Design — Balancing Economy and Reliability

The BMP200 output shaft is supported by deep groove ball bearings capable of accommodating certain axial and radial loads, satisfying the requirements of conventional direct-coupling drive applications. As an economy-class series, the BMP200 achieves lightweight design — approximately 6.4 kg total weight — without compromising reliability, facilitating straightforward installation and maintenance. The specially designed driver-linker extends the service life of power transmission components.

4. Broad Brand Interchangeability — Drop-In Replacement Solution

The BMP200 is dimensionally compatible with Danfoss OMP, M+S MP, Eaton Char-Lynn H Series, and other brand equivalents in mounting flange, shaft extension, and port layout. For equipment maintenance and retrofit projects, the BMP Series serves as a direct replacement for the above-brand motors without modification to mounting brackets, couplings, or hydraulic piping. With stable performance and economical pricing, the BMP Series is widely used across agriculture, construction, municipal services, and other industries worldwide.

Application Areas

• Agricultural Machinery: Combine harvester drives, grape harvester drives, planter drives, irrigation equipment drives

• Municipal Equipment: Street sweeper brush drives, water sprinkler truck drives, refuse compactor drives

• Construction Equipment: Mini excavator auxiliary drives, skid steer attachment drives, trencher drives

• Material Handling: Conveyor drives, small winch drives, roller drives

• Industrial Equipment: Injection molding machine auxiliary drives, packaging machinery drives, textile machinery drives

• Marine & Fishing: Small fishing machinery drives, deck auxiliary equipment drives

Expert Maintenance Tips

Installation Guidelines:

• The BMP200 uses a 2-bolt mounting flange with 106.4 mm pilot diameter. Tighten flange bolts in a diagonal alternating pattern to ensure even loading. The mounting surface must be clean and undamaged to prevent housing distortion.

• The output shaft is a φ25.4 mm SAE 6B splined shaft. Apply a thin film of grease to the spline surface before coupling installation to prevent spline wear. Never install couplings by impact or hammering.

• Use G1/2 standard fittings for main ports and G1/4 for the drain port. Verify O-rings or bonded washers are intact and tighten to recommended torque values.

Commissioning & Operation:

• Before first startup, fill the motor case with clean hydraulic oil and bleed air. Maximum system operating oil temperature must not exceed 80°C.

• Use anti-wear hydraulic oil with viscosity range 20–300 cSt. Maintain fluid cleanliness at ISO 18/13 (NAS Class 9) or better.

• Before full-load operation, run the motor at 30% of rated pressure for a minimum of 1 hour to complete the run-in process for the gear set and bearings.

• Maximum continuous differential pressure is 14 MPa; intermittent pressure must not exceed 17.5 MPa (maximum 6 seconds per minute); peak pressure must not exceed 22.5 MPa (maximum 0.6 seconds per minute).

• If system back pressure exceeds shaft seal limits, install an external case drain line (G1/4 drain port). With a drain line connected, maximum case return pressure reaches 10 MPa.

Maintenance Schedule:

• Inspect volumetric efficiency performance every 500 operating hours. If torque output declines or speed becomes unstable, inspect the distribution shaft sealing surface and Gerotor gear set wear condition first.

• Replace hydraulic fluid at intervals not exceeding 2000 operating hours or 12 months, whichever comes first. Clean or replace suction and return filter elements concurrently during oil changes.

• For storage exceeding 3 months, fill the motor with rust-preventive hydraulic oil and cap all ports to prevent internal corrosion.