Short answer: Violent shaking during spin is almost always an unbalanced load or unlevel feet, both fixable in minutes. If leveling and load balance don't help, worn suspension springs or shock absorbers (front-loaders) or a worn snubber pad (top-loaders) are the next most likely cause.
This distinction matters more than it might seem. Shaking that started suddenly, especially after moving the machine or a specific unusually heavy or lopsided load, is very likely leveling or load balance — both fixed in minutes, no parts involved. Shaking that's been quietly getting worse over months, on a machine that hasn't moved and with normal mixed loads, points instead toward worn suspension springs, shock absorbers, or a snubber pad wearing out — components that degrade gradually rather than failing all at once. Re-leveling a machine with worn suspension parts will still help a little, but it won't fully solve a problem that's mechanical wear rather than a one-off setup issue.
1. Unbalanced load
Clothes bunched to one side of the drum throw off the spin balance, which is the single most common cause of violent shaking.
2. Unlevel machine
If the washer isn't sitting level on all four feet, it has less stability to absorb the natural forces of a high-speed spin.
3. Shipping bolts still installed (new machines)
New washers ship with bolts that lock the drum in place for transport — leaving them in after installation causes severe shaking and can damage the machine.
4. Worn suspension springs or shock absorbers
Front-loaders suspend the drum on springs or shocks that wear out over years of use, reducing their ability to absorb spin vibration.
5. Worn snubber pad or ring (top-loaders)
Many top-loaders use a friction pad to dampen basket movement; once it wears down, the basket can bang against the cabinet during spin.
Remove shipping bolts if present
For a new install, locate and remove all transport/shipping bolts per the manual — this alone resolves severe shaking in new-machine installs.
Level the machine
Adjust the leveling feet until a level reads flat in both directions, then tighten the locknuts against the cabinet to hold the adjustment.
Rebalance the load
Redistribute bunched laundry evenly, especially with single bulky items like comforters, and re-run the cycle.
Check the floor surface
A flexible or uneven floor (some wood subfloors) can amplify vibration even with a level, balanced machine — a rubber anti-vibration mat can help in this case.
Inspect suspension components if shaking persists
On front-loaders, this typically means checking the suspension springs/shocks; on top-loaders, it means checking the snubber pad or ring — both usually need a technician to access safely.
A small amount of vibration is normal, especially at high spin speeds. Violent shaking, banging, or the machine moving across the floor is not, and should be addressed rather than ignored.
Yes — a flexible floor, especially over a wood subfloor, can amplify normal vibration into noticeable shaking. An anti-vibration mat under the machine's feet often helps in this situation.
Check your installation manual for their exact location (usually on the back panel) — leaving them in is one of the most common causes of severe shaking in a newly delivered washer.
Safety warning
A washer that shakes hard enough to move across the floor can pull its water and drain connections loose, causing a leak. Stop the machine and unplug it if shaking is severe rather than letting the cycle finish.Home Solutions Editorial Team
Updated August 29, 2026. How we write guides
A distinct bang or knock once per rotation points to something physically striking the tub — a loose object, a broken counterweight, or a detached drum support — not general imbalance.
A grinding sound during spin is a mechanical wear symptom, not a balance problem — it usually means a worn drum bearing, pulley, or a small object caught between the drum and tub.
A leak that appears specifically during spin — not wash or rinse — usually points to a door seal issue, excess suds, or a hose connection loosened by vibration.
A washer that fills with water but won't spin usually has an unbalanced load, a lid/door switch fault, or a worn drive belt or motor coupling.