Vibration and noise occur simultaneously. They not only cause harm to the operator of the machine, 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, breakage and elastic pad mounting bolts loose will produce noise. For high-speed operation or transfer large energy pumps, to regularly check, record 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, piston pump, will cause the resonance, the pump speed can be changed to eliminate resonance. Noise inlet duct (2) Pipeline flow generated is too small, the flow capacity into the oil filter too small or clogged intake air into the pipeline, oil excluded too high, too low suction oil shortage and high pressure piping produced liquid hammering, will produce noise. Thus, piston works, the tank must be properly designed, axial piston pump, the correct choice of filter, tubing and directional valve. The pump shaft with a stream radial piston pump, the pump has a stator and a rotor, the two eccentric arrangement of the rotor shaft mounted on assignment, opened in the circumferential direction of the rotor with seven uniform plunger hole, the plunger may be wherein the flexible movement. * When the drive shaft when the rotor is rotated due to the action of the return ring and connecting rod, such that the plunger in the plunger bore for reciprocation of the rotor, piston pump accessories, to achieve the sealed volume changes. Each revolution of the rotor, each plunger reciprocates once, to complete a suction and discharge of oil. Hydraulic oil from the pump suction port with flow axis through internal channels, into the plunger cavity in the rotor to later this week, when the rotor to boost half weeks later, half of the shaft from a high pressure with flow discharged through the drain port area, supply actuators. * On both sides of the pump body with large and small control piston pressure pump oil through the oil passages on the way into the small control piston, the other way through the variable mechanism (valve) produce a voltage drop, and then enter the big control piston cavity. When the pump by adjusting the variable control mechanism, so that the size of the control piston movement of the stator in the horizontal direction, to change the size of eccentricity, so as to achieve the purpose of the variable. Piston, piston works, Lu Hydraulic (certified merchants) are provided by the Texas Lu of the hydraulic machinery plant. Road Zhiyuan, temper forward. Texas Lu force hydraulic machinery plant (www.luliyeya.com) aims to become and you win symbiosis, strategic partners to move forward, the more determined to become mechanical and hydraulic components of the most influential companies, and you leap together to success !