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 maintenance hydraulic motor (domestic), lower than the rated speed 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. The composition consists of hydraulic pump couplings, hydraulic tank and oil filters of three parts. Couplings: hydraulic pump drive shaft can bear radial and axial forces, and therefore does not allow direct installation of pulleys, gears, sprockets at the end of the shaft, usually the drive shaft and the pump drive shaft coupling connection. As a result of manufacturing reasons, pump and coupling coaxial exceeded, there is a deviation of the hydraulic motor assembly time and the franchise (domestic), the pump speed is increased, along with the increased centrifugal force coupling deformation, deformation big centrifugal force increased. Resulting in a vicious cycle, the result of the hydraulic motor to produce vibration and noise, thus affecting the life of the pump. In addition, such as loose coupling stud fastening is not timely, not timely replacement of worn rubber rings and other factors. Hydraulic Tank: The main role of the hydraulic oil tank in the hydraulic system for the oil, cooling, separation of oil contained in the air and eliminate bubbles. We must first consider the choice of tank capacity to maintain the hydraulic motor (domestic), general mobile device to take two to three times the maximum pump flow rate, fixed equipment to take 3 to 4 times; Second, consider the oil tank when the system is all hydraulic cylinders extend After the oil tank must not fall below the minimum oil level when the oil after the cylinder retraction shall not exceed the maximum oil level; final consideration tank structure, partitions inside the tank and tradition can not play the role of precipitation dirt should be along the longitudinal axis of the tank Install a vertical bulkhead. Leave gaps between the separator end plate at one end and the fuel tank communicates with the space on both sides of the separator, the hydraulic pump disposed at one end of the oil inlet and outlet sides of the separator is not communicating, so that oil into the oil and the distance between the furthest back, hydraulic tank more than some cooling effect. Filter: Pollutants 10μm particle size generally less affected by the pump is not obvious, but greater than 10μm, the service life of the pump there is a significant effect especially at 40μm or more. Solid particle contamination of hydraulic oil pump is relatively easy to make the surface of the moving parts wear and tear, for which you need to install filters to reduce the degree of contamination of the oil. Filter precision: axial piston pump 10 ~ 15μm, vane pump for 25μm, gear pumps for 40μm. Contamination wear of the pump can be controlled within the allowable range. . Sales of hydraulic motor (domestic), crystal create hydraulic (certified), hydraulic motor from 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.