Is There Clearance in Car Front Wheel Bearings?

[DelClara]

There is clearance in car front wheel bearings. Here are additional details: 1. The axial clearance of car hub bearings, also known as preload: If it is too small, it will increase rolling friction resistance and reduce the vehicle's coasting performance. In severe cases, it may cause the bearings to overheat and lead to high-temperature sintering. If it is too large, it will cause wheel wobble and shimmy faults during driving, increasing abnormal wear on tires and related components. In extreme cases, it may cause a "flywheel" phenomenon, endangering driving safety. Typically, the standard limit for axial clearance in hub bearings is 0.05mm, which should not be exceeded. 2. Symptoms of failure: When one of the four wheel bearings is damaged, a continuous humming sound can be heard inside the car while driving, and the sound becomes louder as the speed increases. Generally, a slight humming sound can be heard starting at around 60km/h, becomes noticeable at 70-80km/h, and requires raising voices for conversation at 100km/h. At this point, a fine vibration can be felt underfoot.