The necessity of prevention of failure mode of automobile water pump bearing

Automobile water pump bearing manufacturers briefly introduce why they should prevent the failure mode of automobile water pump bearings.

In order to meet the development requirements of high-power and high-efficiency engines, automobile water pump bearings put forward higher performance requirements for water pump bearings. The automobile water pump is a key component of the engine cooling system. It inputs torque through a pulley at one end of the water pump bearing and drives the impeller at the other end to rotate.

Corrosion, fracture, peeling and grease leakage are common failure modes of automotive water pump bearings. Among them, fracture is the most harmful, so it is very necessary to analyze the failure mode of automobile water pump fracture and formulate corresponding preventive measures.

What are the requirements for the utilization environment of shaft bearings

The selection of specifications, dimensions and accuracy according to the utilization location, utilization conditions and environmental conditions, and matching of suitable bearings are the prerequisites for ensuring the life and feasibility of the bearings.　

1. Use parts: Tapered roller bearings are actually used to withstand the combined radial and axial loads based on radial loads. Usually two sets of bearings are paired for use. The tension should be applied to the front and rear wheel hubs, active bevel gears, and differential speeds of automobiles. Transmission parts such as gearboxes and reducers.

　　2. Allowable speed: In an environment with precise placement and good lubrication, it is allowed to be 0.3-0.5 times the limit speed of the bearing. In the normal environment, 0.2 times the limit speed is the most suitable.

　　3. Allowable tilt angle: The tapered roller bearing usually does not allow the shaft to tilt relative to the housing hole. If it is tilted, the maximum is not higher than 2'.

　　4. Allowable temperature: Under normal load, the lubricant has high temperature resistance, and the lubrication is sufficient, the normal bearing is allowed to work at an ambient temperature of -30℃-150℃.