Because of construction machinery, mostly walking equipment, improve the load capacity is limited by weight and installation space. To this end, the hydraulic motor parts, consisting of elements of the system requires a higher power having a weight ratio (Strength-to-Weight), the hydraulic motor under the premise to meet job requirements, i.e., large output and light weight, small size. Hydraulic system, in particular the implementation of components (cylinders and motors) weight loss, weight loss and construction machinery load capacity and improve efficiency plays an important role. The cylinder had a high percentage of the total weight of the hydraulic cylinder, especially with the increase of the stroke, the cylinder of the total percentage of the total weight of the cylinder will increase, sometimes as high as 75%, so that the main cylinder is the cylinder weight loss weight loss. Such as the use of carbon fiber reinforced plastic mentioned above (CFRP) hollow piston hydraulic cylinders, hydraulic cylinder of the motor mounting material, because of its high strength and toughness, can withstand up to 70 MPa working pressure. Because the cylinder piston is hollow, so the total weight of the cylinder with the specifications than steel cylinders alleviate 65%. Such cylinders will be used to improve efficiency wheeled excavators are 20% higher than when using a steel cylinder. 1. Hydraulic motors generally require rotating, so the internal structure should have symmetry, while the hydraulic pump is generally a single direction of rotation, no such requirement. 2. In order to reduce oil absorption resistance, reduced radial force, general pump suction port is larger than the size of the oil port. The low pressure chamber of the hydraulic motor pressure slightly higher than atmospheric pressure, so there is no such requirement. 3. The hydraulic motor requirements can work in a wide speed range, therefore, it should be used 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. Hydraulic motors, hydraulic creating crystal factory direct, intensive Hydraulic motors from Jinan Jing Chong Hydraulic Machinery Limited. Hydraulic motors, hydraulic creating crystal factory direct, intensive Hydraulic motor Jinan Jing Chong Hydraulic Machinery Co., Ltd. (www.jnjcyy.com) (www.jnjcyy.com) this year introduced a new upgrade, the above picture is for reference only, please call Tel or pictures on this page, for the latest information, contact: Cui.