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What is wheel bearing and types?

Wheel bearing and types

What is car wheel bearings?

Car wheel bearings are crucial components of a vehicle’s suspension system. They are designed to allow the wheels to rotate smoothly with minimal friction while supporting the weight of the vehicle. Wheel bearings are typically made of high-quality steel and are housed within a hub assembly.

The main function of a wheel bearing is to reduce friction between the wheel hub and the axle assembly, enabling the wheel to rotate freely. This is accomplished through the use of small metal balls or rollers contained within a race or inner and outer rings. These bearings are usually lubricated with grease to further reduce friction and wear.

What are the types of wheel bearings?

Ball Bearings:

Small balls with few contact points are used in ball bearings to facilitate easy rolling. Although the fact that they are usually sealed helps to prevent contamination, they are frequently unserviceable.

Roller Bearings:

Rollers, which are essentially a number of tiny cylinders positioned inside a tapered circular shell, are used in roller bearings. Generally, roller bearings are not sealed, which is advantageous for functionality but disadvantageous for contamination susceptibility.

Other wheel bearing varieties include two central ball bearings, plain bore wheel bearings, and central ball bearings.

The kind of wheel bearing that a car uses is determined by its manufacturer, regular operating circumstances, and driving loads.

Ball Bearing vs Roller Bearing
Ball Bearing vs Roller Bearing

What causes a bad wheel bearing?

bad wheel bearing can be caused by several factors, including:

Lack of lubrication:
A bearing will eventually wear out and fail if the lubricant in it dries out or leaks.

Contamination:
The rolling components and raceways of the bearing may be harmed by debris, water, or other impurities getting inside of it.

Poor installation:
An incorrectly mounted bearing may prematurely wear down and fail.

Worn suspension parts:
When a wheel moves out of alignment, it puts additional strain on the bearing and increases the risk of failure.

Unbalanced tires:
Over time, vibrations from unbalanced tires may harm the bearing.

It is advised that you send your automobile to a mechanic for inspection and repair if you notice any of the signs of a faulty wheel bearing, including pulling to one side when driving, vibration in the steering wheel, grinding noises from the wheels, or an illuminated ABS light.

How long do wheel bearings last?

A wheel bearing’s lifespan is influenced by a number of variables, including quality, installation, driving circumstances, and road conditions. A wheel bearing typically lasts 85,000 to 100,000 miles (130,000 to 160,000 kilometers). The real life of a wheel bearing can differ based on the operating environment and the wheel bearing’s quality, thus this is merely a rough guideline.

Tips for Prolonging Wheel Bearing Life

Regular Maintenance
Routine maintenance, including greasing and inspecting wheel bearings, can significantly extend their lifespan. Follow the recommended maintenance schedule in your vehicle’s manual.

Driving Habits
Avoid harsh driving habits, such as hitting potholes or curbs, which can accelerate wear and tear on wheel bearings.

Environmental Considerations
If you frequently drive in harsh conditions, such as off-road or in extreme weather, consider more frequent wheel bearing inspections and replacements.

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