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.

It acts on the load of the mechanism to complete reciprocating uniform linear motion, continuous rotational motion, or swinging.

Pressure Control Valves: Including pressure control valves, flow control valves, directional control valves, and other hydraulic control components.

Function: Control and regulate the pressure, flow rate, and direction of the oil in the hydraulic system from the pump to the actuator. This in turn controls the force (torque), speed (rotational speed), and direction output by the actuator, ensuring that the working mechanism of the host machine driven by the actuator achieves the predetermined motion law.

Hydraulic Auxiliary Components: Including oil tanks, pipes, filters, heat exchangers, accumulators, and indicating instruments.

Function: Used to store, supply, and recover hydraulic medium; realize the connection between hydraulic components and transmit energy-carrying hydraulic medium; filter out impurities in the hydraulic medium (for BM motors, this maintains the medium cleanliness required for the normal operation of the system); heat or cool the system; store and release hydraulic energy or absorb hydraulic pulsations and shocks; and display system parameters such as pressure and oil temperature.

Hydraulic Working Medium: Various types of hydraulic oil (fluids).

Function: Serves as the energy-carrying medium of the system. While transmitting energy, the BM hydraulic motor also plays the roles of lubrication and cooling.