Vibration and noise occur simultaneously. They not only cause harm to the maintenance of the hydraulic pump to the machine operator, but also pollute the environment. (1) mechanical vibration and noise, such as misalignment of the shaft and the motor shaft or dieback, bearing rotary shaft coupling damage pump sales, resilient pad damage and loose mounting bolts will produce noise. For high-speed operation or transfer large energy pumps, check the hydraulic pump on a regular basis, recording the amplitude, frequency, and noise of the components. As the natural frequency of the rotation frequency of the pump and the pressure valve are the same, will cause resonance hydraulic agent, the pump speed can be changed to eliminate resonance. A2F6.1 piston pump / motor Features: dip a large element: All specifications are the same 40 ° angle, gives a high power, the weight of relatively small size, optimum efficiency and economic structure. Overall tapered piston with two seal rings, cylinder patent Cardiff cardan shaft drive. Ease of installation and maintenance of the bearing structure, providing longer life. New levels of modern design standards series. Special modifications series 1-4 series have the same hydraulic connector, flange and shaft specifications. Liyuan Hydraulic Pump | crystal create a hydraulic (certified) | pump 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.