In extreme cases, a failed wheel bearing can cause abnormal tire wear. When that happens, the noise you’re hearing is caused by both a bad wheel bearing and a worn tire.

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The best way to figure out the cause of this noise is to check the tires first. If the tires look good, then check the wheel bearings.

The noise may be the result of an under-inflated tire or improperly aligned tires. These issues cause part of the tires (or one tire) to be scrubbing on the pavement. That causes a squealing noise.

If you’re still not sure whether the issue lies in the tires or one of the wheel bearings, check out the most common symptoms of each issue:

The Sintered Iron Copper Solid Round Bar Stock (SAE 863) is crafted to meet the needs of rigorous industrial applications, providing an exceptional combination of durability, strength, and wear resistance. This unique alloy is designed for applications where load-bearing capacity, thermal conductivity, and longevity are crucial. Known for its ability to handle heavy loads, SAE 863 iron copper alloy is commonly used in bearings, bushings, and other mechanical components subjected to continuous movement, high friction, and significant stress.

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3. High Thermal Conductivity The copper content in this alloy significantly improves its thermal conductivity, allowing it to dissipate heat effectively. This characteristic is essential in applications where the components are exposed to continuous operation and heat buildup, such as in rotating or sliding mechanisms. Effective heat dissipation helps maintain the efficiency and longevity of machinery, preventing overheating and promoting smoother operation in high-speed settings.

If the problem is a worn wheel bearing, then you’re hearing a knocking noise because the bearing isn’t rotating as freely as it should. A bad tire can cause a knocking or thumping noise, too. To be more specific:

We put together this noise guide to save you some labor time. You can have your technicians find the noise that best describes what they’re hearing in the list below. From there, they may be able to figure out what the issue is.

If the issue is a worn wheel bearing, you’d typically hear this noise while cornering or making sharp turns with moderate speed. A bad CV joint can be heard at low speeds with the steering wheel all the way to one side or the other. It can’t hurt to check both the wheel bearings and CV joint(s).

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4. Self-Lubricating Properties Sintered Iron Copper Solid Round Bar Stock (SAE 863) is engineered to include small, interconnected pores throughout the material. These pores can hold lubricants, giving the material a self-lubricating property that minimizes friction between moving parts. This feature not only extends the lifespan of the material but also reduces the need for constant manual lubrication, which is especially beneficial in hard-to-access or remote locations. Over time, self-lubrication translates to less downtime and more consistent performance.

It can be hard to figure out if the noise is caused by a wheel bearing or a tire. There’s something you can try, though. Turn the steering wheel slightly to the left or right. If the noise gets worse, then it’s likely one of the wheel bearings.

2. Exceptional Wear Resistance A major advantage of using SAE 863 iron copper alloy is its exceptional resistance to wear. The iron-copper composition provides enhanced hardness and strength, making it less susceptible to abrasions, deformations, and surface wear. Components made from SAE 863 are less likely to suffer from damage over time, even in high-friction environments, thus reducing the need for frequent replacements and lowering maintenance costs.

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This post will help you find a quality parts manufacturer. GMB is a reliable manufacturer of OE-quality hub assemblies and wheel bearings. Check out this page to find out why GMB wheel bearing and hub assemblies are the prime choice.

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You may also trace this noise to a loose pinion-bearing preload. It’s likely the case when you only hear the noise when decelerating.

If you’re replacing a bad wheel hub bearing, you want to make sure that your techs use high quality replacement parts. Using high quality replacement parts:

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A worn wheel bearing can cause a howling noise. If you’re also hearing a rumbling noise when turning, then it’s likely a bad wheel bearing.

If the noise is more “growly”, then the issue is likely a bad wheel bearing. The noise may become louder the faster you drive.

If you’re hearing this noise, the issue may be a bad wheel bearing. To confirm it, change the speed of the vehicle. If the noise becomes worse the faster you drive, then it’s almost certainly a bad wheel bearing. If the noise remains the same, then the issue may be the tires instead.

What do you do when a customer brings you a vehicle with a roaring or howling noise coming from a wheel? In most cases, it can be coming from a worn tire, or a worn bearing. It is not easy to tell, but there are ways to determine what is causing the problem.

If the wheel bearing and tires look good, you may want to check the drivetrain. Sometimes a humming or growling noise is a sign of an issue within the drivetrain.

1. Superior Load-Bearing Capacity Sintered Iron Copper Solid Round Bar Stock (SAE 863) is made specifically to support applications where high-pressure loads are encountered regularly. The composition and structure of this sintered material allow it to bear loads that would exceed the limits of other materials. This makes it a go-to choice in industries such as automotive, construction, aerospace, and manufacturing, where high-stress components need robust materials to perform reliably under extreme conditions.