Hydraulic motors generally require inversion, so the internal structure should have symmetry, but the hydraulic pump is generally rotated in one direction, do not have this requirement. In order to reduce oil absorption resistance, reducing the radial force, general pump suction port is larger than the size of the oil port. Low pressure and the pressure of the hydraulic motor is slightly higher than the atmospheric pressure chamber, so there is no above-mentioned requirements. Hydraulic motor requirements can work in a wide speed range, hydraulic motors and therefore should be used in hydraulic bearings or hydrostatic bearings. Because when the motor speed is low, the use of hydrodynamic bearings, it is not easy to form a lubricating synovial. Vane pump with rotor blades together rely on high-speed rotation of the centrifugal force generated by the inner surface of the stator blade is always snapped maintenance (hydraulic motor) phone, from the seal oil, the formation of the working volume. If its use as a motor, blade root must be spring loaded hydraulic motor to ensure that the inner surface of the stator blade is always snapped finishing (hydraulic motor), so the motor can start normally. Pump in the structure need to ensure self-priming capability, but it is not required for the hydraulic motor. Hydraulic motor must have a large starting torque. The so-called starting torque, the motor is started by specializing in a stationary state (hydraulic motor), the torque of the motor shaft can output torque of the torque is generally greater than in the running state of the work at the same pressure, so, in order to make the starting torque may be close to the operating state of the torque required motor torque pulsation is small, a small internal friction. Hydraulic motor and the load pressure is increased and then the hydraulic oil is compressed by being driven, therefore, is illustrated in Figure 4-1 (a) shows the physical model shown in the low speed region of the hydraulic motor working process: the end of the spring pushing at a constant speed v0 (equivalent to work under high pressure incompressible media), so that an object of mass m (equivalent to the motor and load mass moment of inertia) to overcome the "negative characteristics" of the frictional resistance movement. When the object is stationary or very slow resistance, compression spring constant increase thrust. Maintenance (hydraulic motor) telephone, hydraulic motors, hydraulic pressure from Jinan Jing Jing Chong Chong Hydraulic Machinery Limited. Jinan Jing Chong Hydraulic Machinery Co., Ltd. (www.jnjcyy.com) (www.jnjcyy.com) strong, credible, in Jinan, Shandong mining machinery industry has accumulated a large number of loyal customers. The company better work attitude and continuous improvement to create innovative ideas will lead crystal hydraulic and you hand into the brilliant, for a better future!