In the daily operations of construction machinery and agricultural equipment, hydraulic motors are subjected to long-term high-frequency heavy loads, and internal wear is the main cause of performance degradation. Many users find that after using a new motor for a period of time, efficiency gradually decreases and torque output weakens, with the core problem often lying in the wear of the rotor-stator pair. HANJIU Technology Co., Ltd.'s motor orbital BMR demonstrates significant advantages in wear resistance and long-lasting performance.
The core technology of the BMR series lies in its pillar-inserted rotor-stator structure. Unlike the integral stator of the OMP series, the inner wall of the motor orbital BMR’s stator is embedded with rotatable rollers, which roll as the rotor meshes with the stator. This design converts the sliding friction in traditional gear engagement into rolling friction, significantly reducing the wear rate of the contact surfaces. At the same time, this structure has the ability to automatically compensate for gaps under high pressure—over time, even if a slight gap forms between the rollers and the rotor, the hydraulic oil pressure will push the pillars outward to maintain a stable seal. This means that the BMR motor can maintain high volumetric efficiency even after long-term use, without a rapid decline in performance due to wear.
Another advantage of the column-insert design is reflected in its starting performance. Because rolling friction is lower than sliding friction, the BMR motor requires lower starting pressure, allowing it to quickly build torque and achieve smooth start-up even in cold weather or when the oil viscosity is high. This is particularly practical for agricultural machinery that frequently starts and stops (such as raising and lowering combine headers or lifting tractor implements), giving operators a more responsive control experience and reducing waiting time during operations.
In terms of durability, the linkage shaft of the motor orbital BMR is specially designed to withstand significant torque fluctuations and impact loads. With high-pressure shaft sealing technology, this motor can operate under higher back pressure and supports series or parallel use, meeting the configuration requirements of complex hydraulic systems. In actual applications, the motor orbital BMR demonstrates a longer maintenance cycle on equipment such as conveyor machinery, harvesters, and cranes, reducing the frequency of maintenance and downtime losses for users.
In daily use, to fully take advantage of the motor orbital BMR's wear resistance, attention should be paid to oil cleanliness management. It is recommended to use anti-wear hydraulic oil, with an oil cleanliness level of ISO 18/13, and keep the operating oil temperature below 80°C. After approximately 200 hours of operation for a new motor, the first oil change and filter cleaning should be performed, with subsequent replacements carried out regularly according to equipment requirements. Before installation, clean hydraulic oil should be injected into the motor housing through both oil ports and manually rotated to ensure smooth operation without sticking. This procedure effectively prevents dry friction damage caused by oil shortages at startup.
HANJIU has been deeply involved in the field of cycloidal hydraulic motors for many years, focusing on the research, development, production, and global supply of motor orbital BMR, with a complete product R&D and manufacturing system. The company strictly follows internationally accepted manufacturing standards, precisely controls the processes of the pinned stator, shaft sealing, and flow distribution structure of the BMR series motors to ensure product accuracy and operational stability, and also offers multiple displacements and installation specifications to meet different customer customization requirements. Relying on mature production lines and strict factory inspection processes, HANJIU continuously optimizes product durability and compatibility. Its products not only cover the domestic market but are also exported overseas in large quantities, earning consistent recognition from numerous cooperative clients. As a professional hydraulic motor manufacturer, HANJIU always places quality at the core, providing customers with selection consultation, technical support, and comprehensive after-sales service. If you need a motor orbital BMR with strong wear resistance, smooth start-up, and excellent cost-performance, welcome to visit HANJIU's official website to obtain detailed model parameters and professional power matching solutions.
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