As a core component of the hydraulic transmission system, the stable operation of the orbital motor directly affects the efficiency of the equipment. As a professional manufacturer, HANJIU combines years of field experience to provide systematic diagnosis and emergency treatment solutions for typical motor failures.
1. Motor does not rotate
When the motor suddenly stops running, you need to quickly locate the fault according to the following process:
(1) Hydraulic pump status check
First confirm whether the hydraulic pump is started. If it does not start, check whether the motor power supply and coupling is loose. A project case, due to poor contact with the motor line caused by the hydraulic pump stops, rewire the fault eliminated.
(2) Check the position of the reversing valve
Check whether the reversing valve is in the neutral position. In the neutral position, the motor is in the unloading state and needs to be switched to the working position. A crane operation, due to the reversing valve stagnation caused by the motor does not rotate, after cleaning the valve spool back to normal.
(3) System pressure detection
Measure if the system pressure is below the relief valve setting. If the pressure is insufficient, adjust the relief valve to the standard pressure. Typical faults such as a crane slewing motor, due to relief valve spring fatigue caused by pressure only 60% of the rated value, replace the spring pressure recovery, the motor rotates normally.
2. Internal and external leakage
(1) Determination and treatment of internal leakage
Symptom identification: no-load speed is normal but no power with load, suggesting internal leakage.
Cause identification: excessive stator body gap (standard gap 0.03-0.04mm) is the main cause. An excavator motor due to clearance exceeds the standard 0.1mm, internal leakage surge, grinding plane clearance restored to 0.03mm, output torque increased by 35%.
Deep repair: For the rotor tooth surface pulling, the use of 8-tooth rotor with 9-tooth stator and optimization of short amplitude coefficient can reduce the contact stress to 20MPa, which significantly improves the stability of low speed.
(2) External leakage treatment program
Shaft end oil leakage: replace the oil seal, if the output shaft wear over 0.1mm need to be replaced simultaneously. A concrete mixer truck has oil leakage of 500ml per day due to aging of oil seal, and the problem is eliminated after replacing the Viton oil seal.
Combined surface oil leakage: tighten the bolt to 9-10kg・m torque, or replace the O-ring. Oil leakage from the bonding surface of a roller due to uneven mounting surface. After regrinding the mounting surface, the sealing performance was restored.
Troubleshooting and emergency treatment of orbital hydraulic motors is a systematic project that combines theoretical analysis and practical experience. Through the troubleshooting process and case references provided in this article, users can quickly locate the source of the fault and implement accurate repair. HANJIU produces a large number of Orbital motor for sale, not only to provide you with high quality products, but also provide a full range of service support. We have a professional after-sales service team that is always ready to answer your questions and deal with faults to ensure that your equipment is always in the best condition. Meanwhile, we also provide regular technical training and equipment inspection services to help you better use and maintain our products.
orbital motor catalog pdf
orbit hydraulic motor catalogue
orbital motor for pto shaft
orbital motor hydraulic
hydraulic orbital motor diagram
brevini hydraulic motors
danfoss orbital motor catalog
danfoss hydraulic motor catalogue pdf