If your washing machine makes a loud roaring, grinding, or rumbling noise during the spin cycle, worn tub bearings are one of the most likely causes. Although these bearings are hidden inside the washer, they play a critical role in allowing the drum to rotate smoothly at high speeds.
Because bearing problems become progressively worse over time, recognizing the early warning signs can help prevent additional damage to expensive components such as the drive shaft, spider arm, or outer tub.
Quick Answer
Washer tub bearings support the drum shaft and allow the inner drum to rotate smoothly. When they wear out, the washer often becomes noisy during spinning, the drum may wobble, and vibration increases significantly. Bad bearings normally require replacement because they cannot be repaired.
What Are Washer Tub Bearings?
Tub bearings are heavy-duty sealed bearings installed at the rear of the outer tub. They support the rotating drum shaft while minimizing friction during washing and spinning.
As the motor turns the drum, the bearings allow thousands of smooth rotations with minimal resistance. They also keep the drum properly aligned, preventing excessive movement that could damage other suspension or drive components.
Most front-load washers use a bearing assembly installed behind the outer tub, while many top-load washers use a different bearing arrangement depending on the drive system.
How Do Washer Tub Bearings Work?
| Step | Operation |
|---|---|
| 1 | The motor begins rotating the drum. |
| 2 | The drum shaft turns inside the bearings. |
| 3 | The bearings reduce friction. |
| 4 | The drum remains properly aligned. |
| 5 | The washer completes high-speed spinning smoothly. |
When the bearings become worn, friction increases dramatically, creating loud noises and allowing excessive drum movement.
Common Signs of Bad Tub Bearings
Bearing failure usually develops gradually. The noise often starts quietly and becomes louder over several weeks or months.
- Loud roaring noise during the spin cycle.
- Grinding or rumbling sounds.
- Drum wobbles while spinning.
- Excessive vibration despite a balanced load.
- Metal scraping noises.
- Water leaking from the rear bearing area.
- The drum feels loose when rotated by hand.
If your washer is making unusual noises, these troubleshooting guides may also help:
- Washer Loud Noise During Spin Cycle
- Washer Grinding Noise
- Washer Vibrating
- Washer Drum Loose
- Washer Shock Absorbers
- Washer Suspension Springs
What Causes Tub Bearings to Fail?
Although tub bearings are designed to last for many years, several conditions can shorten their lifespan.
| Cause | How It Affects the Bearings |
|---|---|
| Normal wear | Gradual bearing deterioration. |
| Water seal failure | Allows moisture to enter the bearings. |
| Rust and corrosion | Damages bearing surfaces. |
| Frequent overloading | Places extra stress on the bearings. |
| High-speed spinning | Accelerates long-term wear. |
| Ignoring early noise | Can damage the shaft and spider arm. |
Can a Bad Tub Seal Ruin the Bearings?
Yes. The tub seal is designed to keep water away from the bearing assembly. If the seal begins leaking, moisture enters the bearings and washes away the lubricant. Once corrosion develops inside the bearing, the damage usually becomes irreversible.
This is why many technicians recommend replacing both the tub seal and bearings at the same time when performing a major bearing repair.
How to Check Washer Tub Bearings
- Disconnect the washer from power.
- Open the door and rotate the drum by hand.
- Listen for grinding, rumbling, or scraping noises.
- Lift the drum slightly to check for excessive play.
- Inspect the rear of the tub for signs of water leakage or rust.
- Run a spin cycle and listen for increasing noise as drum speed rises.
- Compare the sound with previous wash cycles if the noise has gradually worsened.
If the drum feels loose or produces a deep roaring sound during spinning, worn tub bearings are one of the most likely causes.
When Should You Replace Washer Tub Bearings?
Unlike components such as the drain filter or water inlet screens, tub bearings cannot be cleaned or adjusted once they begin to fail. If the bearings become noisy, loose, or damaged by water intrusion, replacement is usually the only permanent repair.
Because replacing tub bearings requires significant disassembly, many homeowners choose to replace the tub seal at the same time to help prevent future bearing damage.
| Condition | Replace the Bearings? |
|---|---|
| Grinding or roaring noise during spin | Yes |
| Excessive drum movement | Yes |
| Bearing has excessive play | Yes |
| Water leaking through rear seal | Yes (replace seal as well) |
| Minor vibration from an uneven load | No |
| Temporary spin imbalance | No |
Tub Bearings vs. Shock Absorbers
Both components affect washer stability, but they fail in very different ways.
| Tub Bearings | Shock Absorbers |
|---|---|
| Support the rotating drum shaft. | Control tub movement. |
| Produce roaring or grinding noises. | Cause bouncing and vibration. |
| Located behind the outer tub. | Mounted below the tub. |
| Cannot be lubricated or repaired. | Replaced when damping performance decreases. |
Other Problems That Can Sound Like Bad Bearings
Several washer problems create noises similar to worn bearings. Identifying the exact sound can save time and prevent unnecessary repairs.
| Possible Cause | Typical Symptom |
|---|---|
| Loose drive pulley | Rattling during spin |
| Damaged drive belt | Squealing or chirping noise |
| Worn shock absorbers | Heavy bouncing and vibration |
| Broken spider arm | Off-center drum and knocking |
| Objects trapped between tubs | Scraping or metallic sounds |
| Loose counterweight | Loud knocking noise |
If you’re trying to identify the source of washer noise, these guides may also help:
- Washer Grinding Noise
- Washer Loud Noise During Spin Cycle
- Washer Vibrating
- Washer Shock Absorbers
- Washer Suspension Springs
How Much Does It Cost to Replace Tub Bearings?
Tub bearing replacement is one of the more labor-intensive washing machine repairs because the outer tub usually needs to be removed and disassembled.
| Repair | Typical Cost (USD) |
|---|---|
| Replacement bearing kit | $30–100 |
| Tub seal replacement | $15–40 |
| Professional bearing replacement | $300–700 |
| Complete outer tub assembly (some models) | $400–900 |
On some washer models, the bearings are not sold separately and are integrated into the outer tub assembly. In these cases, replacing the complete tub may be the only manufacturer-approved repair.
Frequently Asked Questions
Can I continue using a washer with bad tub bearings?
It is possible for a short time, but it is not recommended. Continued use can damage the drum shaft, spider arm, motor, and suspension system, resulting in much more expensive repairs.
How long do washer tub bearings last?
Most tub bearings last between 8 and 15 years under normal household use. Heavy loads, water seal failures, and frequent high-speed spinning can reduce their lifespan.
Can bad bearings cause the washer to leak?
Yes. A failed tub seal often allows water to reach the bearings, and severe bearing wear can eventually contribute to additional leaks around the rear of the tub.
Should I replace the tub seal with the bearings?
Yes. Replacing the tub seal at the same time is considered best practice because an old seal can quickly damage newly installed bearings if it begins leaking.
Final Thoughts
Washer tub bearings are essential for smooth, quiet drum rotation. When they begin to wear, the washer often develops a loud roaring or grinding sound that becomes more noticeable during high-speed spinning.
Early diagnosis is important because worn bearings place additional stress on the drum shaft, spider arm, suspension system, and motor. If you hear persistent bearing noise or notice excessive drum movement, replacing the bearings—and the tub seal if necessary—is the most reliable long-term repair.