According to the structure type hydraulic motor to points, can be divided into gear, vane, piston, and other types. The rated speed of the hydraulic motor is divided into two major categories of high and low speed. Higher than the rated speed 500r / min belongs to the high-speed hydraulic motor, rated speed of less than 500r / min belongs to the low-speed hydraulic motor. The basic types of high-speed hydraulic motor gear, screw, vane and axial piston type and so on. Their main feature is a high speed, low inertia, ease of starting and braking, adjustable height (speed and commutation) sensitivity. Usually not high-speed hydraulic motor output torque is also known as high-speed low torque hydraulic motor. Hydraulic pump flow can be adjusted according to whether the classification can be divided into: variable displacement pump and dosing pumps. Output flow can be adjusted according to the needs of professional sales called variable hydraulic pump, flow can not be called an adjustable dosing pumps. Commonly used by the hydraulic system pump structure is divided into: gear pumps, vane pumps and piston pumps three kinds. Gear pumps: smaller hydraulic professional services, the structure is relatively simple pump sales calls, strict requirements for cleanliness of hydraulic oil, the price is cheaper; but the shaft by the unbalanced force, badly worn, leaking large. Vane pump: divided double acting and single acting vane pump vane pump. The pump flow evenly, smooth operation, low noise, high efficiency for the pressure and volume than the gear pump, complex structure than the gear pump. Piston: high volumetric efficiency, the leak is small, can work under pressure, mostly for high power hydraulic system; but the complex structure, materials and processing high precision, expensive, high oil cleanliness requirements. Hydraulic pump repair phone, crystal creating hydraulic (certified), the hydraulic pump by Jinan Jing Chong 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.