Danfoss OMV OMS Series Orbital Motor | OMVS630 151B3128 | OMSS80 151F5068 | OMS130

The OMS and OMV Series orbital hydraulic motors from Chengyuan Hydraulic are high-performance power units fully compatible with Danfoss standards. These motors utilize Geroler technology, excelling in starting torque and low-speed operational stability. For core models like OMVS630 (151B3128), OMSS80 (151F5068), and OMS 130, we employ reinforced output bearings and high-pressure shaft seals. Every motor undergoes 100% simulated efficiency testing before shipment to ensure no leakage and consistent speed under high backpressure, guaranteeing 100% original-place interchangeability.

Technical Specifications :

• Series Model: OMS Series / OMV Series (Orbital Motor)

• Displacements: 80cc (OMSS80), 130cc (OMS130), 630cc (OMVS630)

• Max Continuous Pressure: 210 bar (OMS) / 200 bar (OMV)

• Intermittent Peak Pressure: Up to 280 bar

• Max Output Torque: Up to 1880 Nm (OMV630 cont.) / 240 Nm (OMS80 cont.)

• Max Speed: 800 rpm (OMS80) / 250 rpm (OMV630)

• Shaft Options: 1 1/4″ Spline (OMS) / 2″ Keyed or Spline (OMV)

• Mounting Flange: 4-bolt standard (OMS) / Short (S) version (OMVS)

• Weight: OMS (10-15kg) / OMV (30-35kg)

Key Technical Advantages:

• Geroler Technology: The internal gear ring features rollers that reduce starting friction, significantly improving smoothness at low speeds and extending service life under frequent reversal conditions.

• Disc Valve Distribution: The independent disc valve system provides high distribution accuracy with automatic wear compensation, maintaining over 90% mechanical efficiency even after prolonged high-pressure use.

• Enhanced Bearing Capacity: The OMV series is equipped with oversized tapered roller bearings, allowing the output shaft to handle extremely high radial and axial loads, making it suitable for direct wheel or winch drives.

• Integrated High-Pressure Shaft Seal: The heavy-duty shaft seal supports backpressure up to 140 bar, often eliminating the need for a separate drain line and simplifying system plumbing.

Application Areas:

• Agricultural Machinery: Seeder drives and harvester reel controls.

• Construction: Milling machine steering and mini-excavator track drives.

• Material Handling: Conveyor drives and heavy-duty sweeper brush controls.

• Marine Equipment: Hydraulic winches and anchor windlass drives.

Expert Maintenance Tips:

• Shaft Load Verification: While high loads are supported, ensure the center-of-load calculation does not exceed the dynamic load curve in the manual when mounting drive wheels.

• Fluid Filtration: Orbital motors are sensitive to contamination. Maintain oil cleanliness at ISO 20/18/15 or better to protect the Geroler assembly.

• Air Bleeding: For vertical installations, always bleed the air through the highest port before start-up to prevent instantaneous lubrication failure caused by cavitation.