The key part of wonepart hydraulic pump system applied in construction machines A hydraulic pump is a hydraulic component that provides pressurized liquid for hydraulic transmission, and is a kind of pump. Its function is to convert the mechanical energy of power machines (such as electric motors and internal combustion engines) into liquid pressure energy. The figure shows the working principle of a single plunger pump. The cam is rotated by a motor. When the cam pushes the plunger upwards, the seal volume formed by the plunger and the cylinder decreases, and the oil is squeezed out of the seal volume and discharged to the place where it is needed through the one-way valve. When the cam rotates to the lower part of the curve, the spring forces the plunger down to form a certain degree of vacuum, and the oil in the oil tank enters the sealed volume under the action of atmospheric pressure. The cam causes the plunger to rise and fall continuously, the sealing volume periodically decreases and increases, and the pump continuously sucks and discharges oil.For Pumps, there are different kinds of brands, such as Kawasaki, Rexoth, Komatsu, Linde, Eaton, Parker, Kayaba, HAVE, SUER, UCHIDA,NACHI, JEIL, TEIJIN SEIKI, TOSHIBA, YUKEN, ITALY SAM, DAKIN, ITALY SAM, DENISON, OILGEAR, AND SO ON. Take Kawasaki for example,there are Model K3V112 Series, K3V140 Series, K3V180 Series, K3V280 Series, K5V140 Series, K5V160 Series, K5V200 Series and so on, if you are interested in hydraulic pump assemble or pump spare parts, pls feel free to contact our WONEPART spare parts center www.wonepart.com or email info@Wonepart.com or whatsapp:+86-15860751932, we will feel free to support you at any time.