Pump according to the shape and movement into major motion member: gear pumps, vane pumps, hydraulic motors, piston pumps, hydraulic motors installed screw. Where: 1: Gear pumps are divided into external gear pumps and internal gear pumps, 2: vane pump is divided into: double acting vane pump, single acting pumps and pump cam rotor blades. 3: piston into radial piston pump and the axial piston pump. 4: Screw into single screw twin screw and three screw compared with the industrial production of hydraulic equipment, construction machinery have poor working conditions, a large high-speed heavy energy consumption, maintenance, poor conditions and subjected to environmental protection, weight and installation space limitations and other conditions characteristic of the hydraulic motor repair, so the hydraulic system reliability and adaptability to environment, energy and economy, environmental friendliness, comfort and safety, configuration combination of flexibility and fault monitoring and many have relatively high demand. Around these requirements, construction machinery hydraulic drive and control technology based on modern microelectronics and computer technology, sensor technology, fault monitoring and diagnostic technology, modern design theory and methods, and advanced manufacturing technology, has made remarkable progress. Hydraulic motors Accessories | Crystal Chong Hydraulic preferred (certified) | hydraulic motors 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 creating hydraulic leadership with the staff warmly welcome all inquiries negotiations to create the crystal creating hydraulic better future.