wheelbearing中文

A roller bearing between the axle hub and axle shaft ensures easy rotation of the non-drive wheels. On the axle side, it is mounted to the holding bracket from the chassis; on the disc side, the wheel is mounted to the bolts of the WHA. When replacing, a wheel hub assembly should be torqued to the vehicle's specifications to prevent failure.[1]

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Wheel hub assemblies are built to last 100K miles or more. Many last the lifetime of the vehicle. Yet, it’s also common for wheel hub assemblies to fail well before 100K miles. Some factors that would cause wheel hub assembly failure include:

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Wheel BearingHonda City

It’s always better to be safe than sorry. If you think that a customer’s car may have a bad wheel hub assembly, it’s worth taking the time to investigate. Or even if you’re just rotating a customer’s tires, it’s worth taking the time to check for wheel hub assembly failure.

The hub assembly is located between the brake drums or discs and the drive axle. A wheel is bolted on it. Depending on the construction, the end of the hub comes equipped with the splined teeth. They mate the teeth on the axle shaft. The axle hub spins along with the wheels bolted to it and provide power to the wheels in order to rotate.

If your wheel hub bearing fails, you’ll notice a roaring noise at high speeds. So when test driving the vehicle, be sure to push the odometer over 50 mph. If you hear a roaring noise, try to narrow it down to one of the axles. It will save you time during inspection.

Wheel hub bearing are used at least since the 1930s when SKF designed a unit used on the Citroën Traction Avant car.[2] As of 2019 at least 90 million vehicles use SKF wheel hub bearings.[2]

A wheel hub assembly (WHA), also referred to as hub assembly, wheel hub unit, wheel hub bearing, is an automotive part used in most cars, passenger vehicles, and light and heavy trucks.[citation needed]