OMT Series Hydraulic Motor | OMT160 to OMT500 High-Torque Replacement

Genlu Hydraulic proudly introduces our OMT Series high-performance orbit hydraulic motors, engineered specifically for drilling rigs, mining machinery, and heavy-duty travel drives. This series delivers the high torque and exceptional low-speed stability required to master demanding sub-strata drilling conditions. Our range covers the full spectrum from OMT160 to OMT500, with specialized reinforcements for critical high-displacement models including the OMT200 (151B2051 and 151B3001). Genlu unequivocally guarantees 100% Drop-in Interchangeability in mounting flanges, splined shafts, port configurations, and displacement characteristics relative to original OMT series standards. Backed by our uncompromising 100% Simulation Load Testing, each unit is validated for volumetric efficiency, start-up torque, and high-pressure sealing before dispatch, ensuring seamless integration and relentless power for your drilling equipment.

Technical Specifications 

• Product Series: OMT Series High-Displacement Orbit Hydraulic Motor

• Size Range: OMT160 – OMT500

• Representative Models: OMT200 (151B2051), OMT200 (151B3001)

• Rated Operating Pressure: 20 – 25 MPa

• Max Torque: Engineered for ultra-high torque output for heavy drilling

• Displacement: 160 – 500 cc/rev

• Structure: Geroler/Orbit-style high-pressure tolerant design

• Shaft Configuration: Multiple options (Standard Spline/Keyed)

Key Technical Advantages:

• High-Efficiency Orbit Design: Featuring advanced geroler distribution mechanisms, these motors maintain high volumetric efficiency even under high-pressure loads, ensuring stable rotational speed during drilling even against significant resistance.

• Heavy-Duty Bearing Support: Equipped with reinforced tapered roller bearings designed to withstand massive radial and axial forces, making them perfect for the side-loading and shock-loads generated during drilling operations.

• Contamination Tolerance: Internal moving parts undergo specialized wear-resistant treatment, providing superior tolerance to particulate contamination common in drilling environments and extending service life.

• High-Pressure Sealing System: Utilizes premium high-pressure shaft seal technology to ensure integrity during high-frequency cycling and fluctuating back-pressure conditions, eliminating the risk of external leaks.

Application Areas:

• Piling & Drilling Rigs: Power head drives and crowd-force propulsion.

• Mining Rigs: Travel motors and swing power outputs for rock drilling rigs.

• Civil Engineering: Pipe-jacking drive systems and small tunnel construction equipment.

• Heavy-Duty Transmissions: Travel and implement drives for specialized agricultural and municipal vehicles.

Expert Maintenance Tips:

• Case Drain Management: Always connect the motor’s case drain port to the reservoir in high-pressure systems. This prevents excessive back-pressure within the motor housing, which is the leading cause of shaft seal blowout.

• Fluid Cleanliness Management: Drilling environments are inherently dusty. Ensure 25μm (or finer) filtration and check the breather filter on your hydraulic tank regularly to prevent debris ingress.

• Start-up Priming: After installation, perform a low-pressure circulation cycle to purge all trapped air. Air in the hydraulic circuit leads to jerky, unstable “stick-slip” motion, which can compromise drilling accuracy.