Product Features of HCM Hydraulic Motor

The HCM hydraulic motor is a new-type product independently developed by our company with design improvements based on Italian technology, integrating years of practical experience. Its main features are as follows:

There is no lateral force between the piston and the swing cylinder; the bottom of the piston is designed with hydrostatic balance; and torque is transmitted between the piston and the crankshaft via rolling bearings. All these design elements reduce friction losses during power transmission. Therefore, the HCM series hydraulic motor features high mechanical efficiency and a high starting torque (with a mechanical efficiency of over 0.92 during startup).

The flat port plate is simple and reliable, which enhances sealing performance—resulting in excellent low-speed stability and minimal leakage. A plastic piston ring is used to seal the gap between the piston and the swing cylinder, achieving zero leakage. Thus, the motor boasts high volumetric efficiency (up to 0.98).

The structural design reduces friction losses and improves sealing performance, ensuring excellent low-speed stability. The motor can operate stably at a working condition of 1 r/min and has a wide speed regulation range (with a speed adjustment ratio of up to 1000).

The piston and bearing sleeve are tightly attached via a snap ring with no clearance. As a result, this series of hydraulic motors can operate under pump working conditions; when the oil inlet is closed, the motor can run at high speed under free-wheel working conditions.

The HCM series hydraulic motor supports high operating pressure, with a maximum pressure of up to 45 MPa. It also features light weight, compact size, and high power density.

Owing to its simple structure, reasonable design, and adoption of bearings with high load-carrying capacity, the motor ensures reliable operation, long service life, and low noise. Its drive shaft can withstand radial loads, and the rotation direction is reversible.

Materials for Machinery Maintenance and Overhaul

Whether the machinery is not maintained in accordance with regulations and is in the process of maintenance and overhaul. Since operators are not familiar with the machinery's structure, the functions of its components, and technical requirements, it is easy to cause man-made machinery failures. Therefore, it is also necessary to carefully collect and understand information in this regard.

(1) Whether the machinery is maintained on a regular basis, and whether the various types of fuel oil used for replacement are consistent with the specified models;(2) What maintenance work was done and which components were replaced during the last maintenance of the domestic hydraulic motor, and how long the machinery had been in operation when the hydraulic motor manufacturer encountered the failure;(3) When replacing the engine oil and cleaning the filter element, was there any discovery of excessively dirty engine oil, deteriorated engine oil, or metal impurities;(4) Whether the machinery has experienced failures before, what the causes were, and which parts were disassembled;(5) Whether any repairs have been carried out recently, which parts have been replaced, and how the installation and adjustment were performed.