Wheel bearings can exhibit growling/howling noises and show no signs of play or wear, other than excessive noise. To diagnose these, you’ll need to drive the vehicle at various speeds in turns. A left front-wheel bearing that is worn may only make noise during left turns or right turns.

Drawn cup needle roller bearingssizes

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Combination ballneedle rollerbearing

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Drawn cup needlebearing sizes

If the wheel bearing is worn, you will feel a popping as you move the wheel. Additional methods for inspecting wheel bearings include using chassis ears, a stethoscope, and a dial indicator (to measure the exact amount of wear).

Cagedneedle rollerbearing size chart

How much is it to fix or replace a wheel bearing? That depends on the make/model of your car as well as the type of bearing. RepairPal estimates a wheel bearing replacement will cost you between $300 and $400. This estimate can be accurate for most vehicles. However, if we look at the pricing for the popular Toyota Tacoma, the price jumps as high as $740. Using a whole knuckle assembly from NAPA or other parts suppliers will cost between $250 and $500, plus labor. Like most repairs, if you do them yourself, you can save some money. However, when it comes to serviceable bearings and press-in bearings, we recommend you let the pros handle the repair, especially if you live in the rust belt.

We highly recommend you avoid driving with a worn wheel bearing. Wheel bearings can become so worn that the hub can fall out of the bearing, causing the wheel to detach from the vehicle. This is a serious scenario that you’ll want to avoid at all costs. Additionally, a worn wheel bearing will reduce the vehicle’s handling and braking abilities. If your wheel bearing is only making noise and does not exhibit any wheel play when inspected, you may have some time before you absolutely need to replace the bearing. However, if the wheel has excessive play due to a worn bearing, you’ll want to get it fixed immediately.

Drawn cup needle roller bearingsfor sale

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Wheel bearings provide a mounting point for the wheels and allow the wheels to spin. Wheel bearings are either a tapered rolling bearing design or a ball bearing design. Ball bearing designs are either press-in or bolt-in. Let's take a look at each bearing design in more detail.

Roller bearingssizes

Drawn cup needle roller bearingsskf

These are by far the easiest bearings to work with, as long as you do not live in the rust belt. Issues that arise from bolt-in bearings are bi-metal corrosion and cost. If your vehicle is equipped with an aluminum steering knuckle, expect a fight when removing the steel bearing. This mostly applies to states that suffer from increased levels of vehicle corrosion and rust due to the climate. Since replacement parts come as an assembly, the cost can be higher when compared to a press-in or tapered roller bearing. Vehicles such as the Jeep Wrangler will use these bearings on the front axle and vehicles such as the Toyota RAV4 will use these in the rear.

Tapered roller bearings are serviceable, which means they can be removed, cleaned, and repacked with grease to prolong their life. Aside from lasting longer, serviceable bearings are cheaper to replace. However, over a lifetime of service, it may add up to maintenance services/costs. Unfortunately, the majority of vehicle manufacturers do not offer serviceable bearings anymore. Years ago, the Ford F-150 and Toyota Land Cruiser used this style of bearing. The biggest drawback of tapered roller bearings is improper maintenance. Overloaded or improperly pre-loaded bearings wear prematurely. Improper grease packing is another issue when it comes to maintenance.

Checking wheel bearings for wear is easy and only requires the vehicle or wheel to be suspended. Follow these steps to check the wheel bearing on your car:

Drawn cup needle roller bearings are complete bearing units consisting of a thin walled, drawn outer cup and a needle roller, available in full complement or cage assembly. Needle rollers have particularly compact radial dimensions and require a hardened and ground shaft as a raceway. Inner rings can be used for applications where it is impractical to use the shaft as the inner raceway.Drawn cup needle bearings are ideal for housing bores that are of low rigidity like cast iron, aluminum, or plastic. Mechanical efficiency is improved with needle roller bearings because the rotating radius and torque is small. Due to the small bearing volume and weight, the moment of inertia of the bearing is minimized when put in motion, therefore requiring lower torque.Choosing a bearing with a closed end will protect against moisture and contaminants, while capping exposed rotating shafts. A sealed bearing is intended for retaining grease and for keeping out contaminants and spray. Drawn cup needle rollers are offered in two types: caged or full complement.Caged bearings utilize fewer rollers which reduces friction and can therefore handle higher speeds. Specially designed cages guide the rollers at their ends, which decreases friction. Guiding at the end of the rollers also prevents skewing and maximizes roller stability. Caged needle bearings are offered with either a plastic or metal cage. Metal cages are ideal for maximum strength and life requirements. Reinforced plastic is an option when operating conditions permit. Full Complement needle rollers are ideal for lower speeds and higher loads. Because these bearings utilize more rollers, higher loads are attainable. The lip of the drawn cup outer ring is turned in which mechanically retains the rollers while in motion. These outer rings are then filled with as many rollers as possible. Roller alignment is maintained even with repeated removal of the shaft.

Ball bearing wheel bearings are cheaper to manufacture and maintain than their tapered bearing counterparts. Press-in bearings require the use of a hydraulic press to safely remove and replace them. On most vehicles, such as a Honda Civic or Toyota Camry, specifically for front wheel bearing replacements, the steering knuckle will need to be removed. Removing the knuckle will require wheel alignment afterward. Due to the need for a hydraulic press, the need for wheel alignment, and the depth of the repair, most people opt to let the pros handle it. There are options such as removing the steering knuckle at home and taking the assembly into a shop and having them press the old bearing out and the new bearing in. When it comes to press-in bearings, a replacement wheel hub will be the most expensive part. Aftermarket parts such as NAPA offer full assemblies for replacement. This may be the better option, depending on how rusty or worn your vehicle is.

Needle bearingsby size

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Worn wheel bearings shouldn't be ignored. The cost of a wheel bearing replacement in front or at the back is a small price to pay for reducing the safety hazards that come with this component wearing out.

If you notice growling or clunking noises, vibrations, abnormal tire wear, or excessive steering wheel play, your car may have one or more worn wheel bearings. Wheel bearings are what make our wheels go round, literally. Despite their simple design and purpose, wheel bearing replacements can be costly. The type of wheel bearing used is entirely dependent on the manufacturer, and you may pay more for a repair on a luxury vehicle. When it comes to replacing bearings, you can do this repair yourself on certain vehicles, while for others, you may need to recruit the help of the pros. In this article, we are going to cover what a wheel bearing is, how it works, the different design types, symptoms of a worn wheel bearing, how to check your car for a worn bearing, and how much it costs to replace a wheel bearing.

Anything you need, any questions or concerns you have, you can ask us here. An NPB team member will get back to you promptly.