In the actual operation of agricultural machinery and engineering equipment, operators often face a dilemma: when precise adjustment of the equipment position is required, hydraulic motors exhibit a jerky crawling phenomenon at low speeds. For example, when calibrating the seeding depth of a planter or when the platform of an aerial work vehicle slowly approaches the work point, this instability not only affects operational accuracy but also accelerates the wear of transmission components and may even pose safety risks. The OMP series cycloidal motors produced by HANJIU Technology Co., Ltd., with their shaft distribution and integral rotor-stator design, demonstrate outstanding advantages in low-speed stability, providing users with a more precise and controllable operational experience.
The low-speed stability of the OMP series is primarily attributed to the precise machining process of its integrated rotor-stator assembly. The stator and rotor of this series are designed as a single unit, and after high-temperature quenching and secondary forging, the surface hardness reaches a relatively high level with good meshing accuracy. Compared with the pinned type OMR series, the integrated structure eliminates the clearance between the rollers and the stator slots, allowing the motor to maintain uniform torque output at very low speeds without motion interruptions caused by slight roller displacement within the slots. This design mechanically ensures continuous meshing between the rotor and stator, providing reliable support for users during precise operations in the fields or on construction sites.
Shaft distribution technology is another key factor for the OMP series to achieve low-speed smoothness. This series uses a shaft-type distribution structure, where the distribution shaft rotates synchronously with the rotor, ensuring uniform hydraulic oil distribution. Under low-speed conditions, this distribution method can ensure that each working chamber receives and discharges oil smoothly in sequence, with minimal pressure pulsation, preventing impacts or vibrations caused by intermittent oil flow. Combined with the integral rotor-stator assembly, shaft distribution technology ensures that the motor can operate smoothly even at ultra-low speeds of a few to a dozen revolutions per minute, without creeping. This feature is particularly suitable for agricultural machinery and engineering equipment that require precise position control.
To ensure the low-speed performance of the OMP series is fully utilized, several key points must be noted during installation and commissioning. Before installation, clean hydraulic oil should be injected into the motor housing through two oil ports, and the motor should be manually rotated to confirm smooth operation without sticking. This procedure can effectively prevent dry friction damage caused by oil shortage at the moment of startup. During startup, run the motor for 10 to 15 minutes under no-load conditions to bleed air, while observing whether there is foam in the oil tank and whether the system produces abnormal noise. After removing air, fill the oil tank, then gradually increase the load, and confirm normal operation before putting the system into regular service. In addition, the back pressure of the return oil in the system should be kept below 5 MPa. If it exceeds this, an external drain pipe must be connected directly to the oil tank to ensure stable internal motor pressure and maintain the distribution accuracy during low-speed operation. During regular use, the cleanliness of the oil should be checked periodically. Darkened oil may indicate overheating, while emulsification may suggest water contamination and should be addressed promptly.
HANJIU has been deeply engaged in the field of cycloidal hydraulic motors for many years, focusing on the research, development, production, and global supply of the motor orbital omp series, with a complete product R&D and manufacturing system. HANJIU strictly follows internationally recognized manufacturing standards and implements precise process control over the rotor-stator, seals, and distribution structure of the omp series motors to ensure product accuracy and operational stability. At the same time, it offers multiple displacements and installation specifications to meet various customized requirements of different customers. Relying on mature production lines and strict factory inspection processes, HANJIU continuously optimizes the durability and adaptability of its products. The products not only cover the domestic market but are also exported in large quantities overseas, gaining unanimous recognition from numerous cooperative clients. If you need a motor orbital omp with stable performance, compact size, and excellent cost-performance ratio, please visit our company website to obtain detailed model parameters and professional power matching solutions.
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