KCB/2CY series gear pump KCB series gear pump are mainly composed of gears, axles, pump cover, safety valve and axle-end seals etc. The heat-treatment gears have the advantage of higher hardness and intensity, and rotate with the axles inside the replaceable bearing sleeves. All of pumps’s parts can be lubricated by delivered medium when working. Structure& Operation Theory The pump is properly designed with leakage and return chute, which lets the gears bear the least torque force and reduces load and wear on bearings in order to raise pumps’ efficiency. It is also designed with safety valve for protection against overload. The full return flow pressure of the safety valve is higher than the rated exhaust pressure of the pump. It can be also adjusted within the allowance of exhaust pressure range according to circum…