Hydraulic Gear Motors

Hydraulic Gear Motors for Mobile and Industrial Equipment

Hydraulic gear motors convert hydraulic flow into rotary mechanical power using meshing gears inside the motor housing.

They are widely used in mobile machinery, agricultural equipment, conveyors, auxiliary drives and industrial systems.

Advantages of Hydraulic Gear Motors

• compact design,
• simple construction,
• reliable operation,
• good power-to-size ratio,
• easy integration into hydraulic systems.

How to Select the Correct Gear Motor

• OEM number,
• manufacturer reference,
• displacement,
• rotation direction,
• shaft type,
• mounting flange,
• port size and orientation.

Displacement

Displacement determines the relationship between oil flow, speed and torque. A replacement motor should normally match the original specification.

Rotation Direction

Check whether the motor is designed for clockwise, counter-clockwise or reversible operation.

Replacement Hydraulic Gear Motors

Use the full OEM reference or product code whenever possible. HPM Hydraulic offers a wide range of gear motors, including many Danfoss and Sauer-series references.

Common Symptoms of Gear Motor Wear

• reduced torque,
• slow rotation,
• internal leakage,
• noise,
• overheating,
• unstable operation.

Related Gear Pump and Motor Components

Hydraulic gear motors are commonly paired with hydraulic gear pumps in compact mobile and industrial drive systems.

For motor repair and maintenance, browse hydraulic motor spare parts and hydraulic seal kits.

FAQ – Hydraulic Gear Motors

What is a hydraulic gear motor?

A gear motor uses hydraulic oil to rotate meshing gears and produce mechanical rotary power.

How do I identify the correct gear motor?

Check OEM reference, displacement, rotation direction, shaft and mounting configuration.

Can a hydraulic gear pump be used as a motor?

Not automatically. Pumps and motors may differ in internal construction, sealing and load capability.