Bearings Name	New Model	Old Model:	ID(mm)	OD(mm)	Width(mm)	Cr(kN)	Cor(kN)	Grease Lubrication Speed(r/min)	Oil Lubrication Speed(r/min)	Weight(kg)
Slewing Ring Bearings for Ferris Wheel, 010.25.400 Slewing bearing	010.25.400	010.25.400	307	493	70	-	-	-	-	40

Wheel bearings are important components of a vehicle’s braking, steering, and suspension systems. The one-piece hub assembly, located between the drive axle and the brake disc or drums, incorporates the hub, wheel bearings, ABS wheel speed sensor, and mounting flange.

What is a wheel bearing? And what does it do in a car?
A wheel bearing is a crucial part of the wheel assembly that connects the wheel and the axle. It is a set of steel balls (ball bearings) or tapers (tapered bearings), held together by a metal ring. It enables the wheel to rotate smoothly with a minimum of friction. Wheel bearings are safety critical components designed to sustain radial and axial loads caused by gravitation, acceleration, breaking & cornering forces, so they need to be replaced when they stop working properly.

How long does a wheel bearing last?
Wheel bearings have an average lifespan of 136,000 to 160,000 km (approximately 85,000 to 100,000 miles). This is only a rule of thumb though, the actual lifespan of a wheel bearing depends on the quality of the wheel bearing and the operating conditions.

It’s the component that allows a wheel to turn.

The bearings are tightly packed in a grease-filled, waterproof, sealed metal ring. This housing, called a race, is located inside the hub, and each wheel has one. Wheel bearings have a Herculean responsibility: They are engineered to support the vehicle’s entire weight.

What’s the Life of a Wheel Bearing?
Wheel bearings are theoretically engineered to last the life of the vehicle. There is no maintenance schedule for replacing wheel bearings, and there is no constant source of lubrication. However, they can be damaged. They are especially vulnerable if you hit a pothole, tall curb, or a speed bump at a brisk speed.

If water, mud, road salt, or sand get past the seal and touch the bearings, it will contaminate the grease, causing the bearings to wear down, eventually leading to fail prematurely. Also, ignoring worn-out wheel bearings can damage the vehicle’s constant velocity joint (CV joint) or automatic transmission. The outer CV joint attaches the driveshaft to the wheels, and the inner CV joint connects to the transmission. Find a reputable service technician for advice.

Custom Wheel and Tire Caution
Another thing, if you are planning to customize your vehicle, be careful what you do. The original equipment bearings on your vehicle are engineered for specific loads. Those bigger and wider tires look cool, so do tires with lower tread walls, but they place higher loads on the wheel bearings, possibly resulting in accelerated wear. Stick with an automaker’s specifications when it comes to replacements.

How Much Does It Cost to Replace a Wheel Bearing?
Finally, the cost to replace one front-wheel hub assembly varies widely. Among the variables are the vehicle brand and model, the garage’s labor rate, and the cost for parts. The average out-the-door price without taxes is about $350; however, luxury brands are more expensive to repair. If bearings go bad at one wheel, it is unnecessary to replace the bearings at the other wheel on the same axle. Don’t let someone talk you into work that is not needed. Get the price estimate for wheel bearing replacement for your make and model of car.

Replacing your wheel bearings
Despite the fact that modern wheel bearings are easier to install than previous generations, correct installation, the usage of appropriate tools and respecting the specified torque values are still essential for maximum performance, durability and safety. Therefore, we recommend having your wheel bearings fitted by a professional mechanic that has the skills and the tools to do the job.