The automobile water pump pulley belongs to the hub-type parts. Generally, the relative size is relatively large. The manufacturing process is generally based on casting and forging. Generally, the larger size is designed by casting method, and the material is generally cast iron (good casting performance). Cast steel is rarely used (the casting performance of steel is not good); the general size is small, it can be designed as forging, and the material is steel.

How the car water pump works

The automobile water pump drives the water pump bearing and the impeller to rotate through the pulley. The coolant in the water pump is driven by the impeller to rotate together. Under the action of centrifugal force, it is thrown to the edge of the water pump housing. At the same time, a certain pressure is generated and then flows out from the outlet channel or water pipe. The pressure at the center of the impeller decreases due to the coolant being thrown out, and the coolant in the water tank is sucked into the impeller through the water pipe under the action of the pressure difference between the pump inlet and the center of the impeller to realize the reciprocating circulation of the coolant.

The bearings that support the water pump shaft are lubricated with grease, so it is necessary to prevent the coolant from leaking into the grease to cause emulsification of the grease, and also to prevent the grease from leaking. The sealing measures for the water pump to prevent leakage include water seals and gaskets. The water seal dynamic seal ring and the shaft are installed between the impeller and the bearing through an interference fit, and the water seal static seal seat is tightly pressed on the water pump shell, so as to achieve the purpose of sealing the coolant.

The water pump housing is connected to the automobile water pump through a gasket and supports moving parts such as bearings. There is also a drain hole on the water pump housing, which is located between the water seal and the bearing. Once the coolant leaks through the water seal, it can be released from the drain hole to prevent the coolant from entering the bearing cavity and destroying the bearing lubrication, and causing parts to rust. If the coolant still leaks after the water pump of the car stops, it means that the water seal has been damaged.

Zhejiang Guanlun Machine Co., Ltd. not only has Water Pump Pulley but also other products such as Power Steering Pump Pulley, welcome to check our official website.