Displacement: Usually, the displacement of this type of swing motor is 120
cm
3
/rev. The displacement indicates the volume of oil that the motor displaces per revolution, which is an important parameter affecting the motor's torque and speed.
Pressure
Rated Pressure: It is generally 25 - 30 MPa. The rated pressure is the pressure at which the motor can continuously operate stably under normal working conditions.
Peak Pressure: It can reach 32 - 35 MPa. The peak pressure is the maximum pressure that the motor can withstand for a short time under special circumstances.
Speed: The maximum rotational speed of the M2X120B swing motor is generally 10 - 15 rps (revolutions per second), that is, 600 - 900 rpm. This speed range can meet the requirements of the excavator's swing operation.
Torque: The rated torque of the M2X120B is usually in the range of 1500 - 2500 N·m. The specific value may vary depending on different working conditions and pressure levels. Torque is an important parameter for the swing motor to drive the rotation of the excavator's upper body.
Structure and Installation: It adopts an axial - piston structure, which has the advantages of high efficiency and reliability. The installation size and connection method of the motor are designed according to the specific structure and space layout of Hitachi EX220 series excavators, which are convenient for installation and maintenance.
Weight: Approximately 75 - 100 kg. The weight of the motor has a certain influence on the overall weight and balance of the excavator.
