Hydraulic Motor Bearing Supports

Hydraulic Motor Bearing Supports and Overhung Load Adaptors

Flowfit hydraulic motor bearing supports, also known as overhung load adaptors or OHLAs, provide additional support for hydraulic motors connected to pulleys, sprockets, gears and other driven components.

They are designed to isolate external loads from the hydraulic motor shaft and internal bearings. This helps reduce wear, prevent premature component failure and extend the operating life of mobile, agricultural and industrial hydraulic systems.

Flowfit bearing supports are suitable for compatible 25mm parallel shaft hydraulic motors, including OMP, OMR, Flowfit FFPM and Flowfit FFPRM motor ranges.

How a Hydraulic Motor Bearing Support Works

When a pulley, gear or sprocket is mounted directly onto a hydraulic motor shaft, the motor may be exposed to radial and axial forces that its internal bearings are not designed to support continuously.

A hydraulic motor bearing support transfers these external loads through a separate bearing assembly. This reduces the force placed on the motor shaft, bearings and seals while maintaining an effective connection between the hydraulic motor and the driven equipment.

The adaptor also provides a secure mounting surface and helps prevent dirt, grease, moisture and other contaminants from reaching sensitive motor components.

Common Applications

• Mobile hydraulic systems
• Agricultural machinery
• Industrial hydraulic equipment
• Conveyors and material-handling systems
• Hydraulically driven fans and blowers
• Pulley and belt-drive systems
• Chain and sprocket drives
• Gear-driven hydraulic equipment
• Equipment operating in dirty or demanding environments

Benefits of Hydraulic Motor Bearing Supports

• External load support: Supports radial and axial loads generated by pulleys, sprockets, gears and other driven components.
• Reduced motor wear: Helps protect the hydraulic motor shaft, internal bearings and seals from excessive loading.
• Extended service life: Reducing stress on the motor can help prevent premature failure and increase equipment reliability.
• Contamination protection: Helps prevent dirt, grease, grime and other contaminants from reaching hydraulic motor components.
• Secure mounting: Provides a strong and permanent mounting point between the motor and driven equipment.
• Easier maintenance: Allows the hydraulic motor to be removed for servicing without disturbing connected pulleys, sprockets or gears.
• Reduced downtime: Protecting the motor from damaging external forces can help minimise unexpected breakdowns and maintenance costs.

Bearing Supports for Pulleys, Sprockets and Gears

Pulleys, sprockets and gears can create significant side loads when fitted directly to a hydraulic motor shaft. The amount of force depends on factors including the component diameter, belt or chain tension, operating torque, rotational speed and the distance between the load and motor mounting face.

Installing an overhung load adaptor provides a separate bearing arrangement to absorb these forces. This helps protect the hydraulic motor while maintaining reliable power transmission to the driven equipment.

Technical Specifications and Downloads

Detailed dimensions, mounting information and compatibility details are available on the individual product pages. Select the required bearing support and view the downloads section for any available technical drawings, dimensional information or PDF specifications.

Need Help Choosing a Hydraulic Motor Bearing Support?

If you are unsure which bearing support or overhung load adaptor is suitable for your hydraulic motor, our technical team can help you compare the motor model, shaft diameter, mounting flange and application requirements.

Call 01584 876 033 or email sales@flowfitonline.com for product selection advice, availability and delivery information.