Have you looked at your vehicle&#;s wheel hubs lately? If not, you might want to give them a quick once-over. A truck or car's wheel hubs play multiple functions in ensuring that your car rolls smoothly and safely. So how do you tell whether your wheel hub assembly is in need of replacement? Here are some tips to help you decide.
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A wheel hub on a car, sometimes called the wheel hub assembly or wheel bearing assembly, serves as the mounting assembly for the wheel and connects the wheel to the car's suspension system. The wheel hub houses the wheel bearings, which let the wheel rotate smoothly. It also provides a secure point for the wheel to be attached to the axle. The wheel hub also plays a vital role in the vehicle's braking system, as it usually includes the mounting for the brake rotor. The vehicle's handling, steering, and safety can be significantly compromised should this part break or degrade to the point of failure.
One of the first signs that there might be something amiss with your wheel hub assembly is the sound it makes. These sounds will appear when the car is in motion, and are most apparent at higher speeds, much in the same way you can tell a radiator is broken by excess heat at high speeds. A clicking noise when making sharp turns can indicate a bad wheel assembly, especially if it's a rhythmic clicking noise. Also, keep an ear out for knocking, grinding or clunking. While not always a sign of bad wheel hubs, as they could also indicate problems with struts or similar structural parts they can be a strong indicator that your auto wheel hubs will need a replacement soon.
Because the wheel hub assembly is a combination of interlocking parts (like ball bearings and a spindle), a failure in one of those parts will cause problems with the car or truck's feel when you drive it. If the wheel vibrates, wobbles, or shudders when going a consistent speed, it might be a bad wheel hub assembly on the vehicle. If you notice the steering doesn&#;t work as well as it did before, or if it pulls to one side even without braking, these are additional signs that the wheel hubs need to be examined, and most likely replaced, by a professional technician.
You might see the phrase &#;wheel hub&#; and think we&#;re just talking about the piece of metal or plastic that fits over the hub. While those are important to the look of your car, they are not nearly as important as the hub itself. You may be thinking of the wheel's hubcap, which covers the wheel hub on a car. Don&#;t worry, your technician knows the difference.
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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]
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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.
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 bearing are used at least since the s when SKF designed a unit used on the Citroën Traction Avant car.[2] As of at least 90 million vehicles use SKF wheel hub bearings.[2]
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