BM Hydraulic Motor

The BM hydraulic motor is an axial porting hydraulic motor. Its housing is cast from ductile iron with sufficient strength, making it suitable for applications with low loads and intermittent operation. The main features of the motor are as follows:

1. Adopts an axial oil distribution structure, featuring small size, high efficiency, and long service life.
2. The shaft seal can withstand high pressure and allows series or parallel connection for use.
3. Enables easy forward and reverse rotation with stable rotational speed.
4. Compared with other hydraulic motors, it offers high cost-effectiveness.

Failures and Troubleshooting of Gerotor Hydraulic Motors

Fault Phenomenon: Excessively high motor temperature

• Causes: 1) Overload operation; 2) Damage to components, especially the rotor and stator
• Troubleshooting Methods: 1) Load the motor in accordance with regulations; 2) Carefully identify the cause and replace damaged components

Fault Phenomenon: Excessive noise from high-torque hydraulic motors

• Causes: 1) Air in the hydraulic transmission system; 2) Over-speed operation; 3) Damage to components
• Troubleshooting Methods: 1) Remove air from the system in accordance with operating guidelines; 2) Adjust the motor speed; 3) Replace damaged components

Fault Phenomenon: Oil leakage at the bearing end cover

• Causes: 1) Damaged or scratched sealing rings; 2) Contaminants or water entering the output end of the hydraulic motor slewing device, causing shaft rust; 3) Excessive axial load on micro-hydraulic transmission motors; 4) Excessive back pressure
• Troubleshooting Methods: 1) Replace the sealing rings; 2) Remove rust from the spline shaft; 3) Ensure the axial load does not exceed the standard value; 4) Connect an oil leakage pipe

Fault Phenomenon: Oil leakage at both sides of the stator

• Causes: 1) Damaged "O"-rings; 2) Contaminants or burrs on the mating surface; 3) Loose rear cover bolts
• Troubleshooting Methods: 1) Replace the "O"-rings; 2) Disassemble, clean, and polish the mating surface; 3) Tighten the bolts

Fault Phenomenon: Shaft fails to rotate

• Causes: 1) Jamming of the working equipment; 2) System malfunctions; 3) Excessive axial or radial load on micro-cycloidal hydraulic motors
• Troubleshooting Methods: 1) Inspect the working equipment; 2) Inspect the system; 3) Inspect the installation

Fault Phenomenon: Insufficient torque

• Causes: 1) Excessively high oil temperature or low oil viscosity; 2) Reduced motor efficiency due to wear of the rotor or small linkage shaft
• Troubleshooting Methods: 1) Enhance cooling; 2) Replace worn components