The basic types of low-speed hydraulic motors are radial piston, in addition to the axial piston, vane and gear type is also a low-structure type, the main features of low-displacement hydraulic motor is large, bulky low speed (sometimes even turn up a few tenths of revolutions per minute), it can be directly connected with the work of agencies; no maintenance of the hydraulic motor speed reduction device (imported), so that the transmission mechanism is greatly simplified, usually a larger output torque at low speed hydraulic motor hydraulic motor, it is also known as the low speed high torque hydraulic motor. Maintenance of hydraulic pump motor (import) while working at rated pressure and rated flow, its motor power can be detected directly from the sample pump. In general, according to the formula to calculate the power required for the motor. When on the steam map Nt gentle curve, according to the work cycle, the maximum power point selection formula: N = (Ps * Qp) / η N-- prime mover power Ps * Qp-- product pump pressure and flow η-- maximum pump efficiency. Gear pumps 0.6-0.7; vane pump 0.6-0.75; 0.8-0.85 maintenance piston hydraulic motor (import) _ Crystal Chong hydraulic (certified) _ Jinan crystal by creating a hydraulic motor hydraulic machinery Limited. Jinan Jing Chong Hydraulic Machinery Co., Ltd. (www.jnjcyy.com) (www.jnjcyy.com) Shandong Jinan, mining machinery leaders, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, the maximum meet customer needs. In the crystal to create a hydraulic leadership with the staff warmly welcome all inquiries negotiations to create the crystal to create a better future for the hydraulic.