What Is the Drum of a Washing Machine?

People say “drum,” “tub,” and “basket” and often mean slightly different things. Understanding what the drum actually is — and how it differs from the tub around it — makes it far easier to know what is wrong when your washer starts banging, grinding, or leaving clothes soaked. This guide explains the part, what it is made of, how it works, and the handful of problems that send it to a technician.

The Drum Is Actually Two Parts

Look inside a washer and you see one cylinder, but there are two nested together. The inner drum — the part you load clothes into — is covered in small holes. This is the piece that rotates: it tumbles clothes in a front-loader or spins them around an agitator or impeller in a top-loader. Surrounding it is the outer tub, a solid, watertight shell that holds the wash water. When the machine fills, water flows through the holes in the inner drum and collects in the outer tub; when it spins, water is flung back out through those same holes and pumped away.

Drum vs Tub vs Basket — the Terminology

The words get used loosely, so here is the plain version:

How the Drum Works Through a Cycle

During the wash, the drum moves slowly — tumbling clothes through water in a front-loader, or rocking them against an agitator or impeller in a top-loader — to lift out dirt. During the spin, the same drum accelerates to high speed so centrifugal force drives water out through the perforations and into the tub, where the pump sends it down the drain. The faster and more balanced that spin, the drier your clothes come out and the less time they need in the dryer. The way the drum is oriented — horizontal in a front-loader, vertical in a top-loader — is the core difference between the two washer types, which we cover in front-load vs top-load washers.

What Drums Are Made Of

The material of the inner drum has a real effect on how long the washer lasts.

Common Drum Problems

Most washer noises and spin complaints trace back to the drum or the parts that support it. Here are the usual suspects.

If the issue is soaked clothes rather than noise, the drum may be fine and the problem is downstream — walk through why a washing machine will not drain. For the cost of these repairs part by part, see the washer repair cost database.

Drum Bearings — the Expensive One

The single most serious drum fault is worn bearings. Bearings let the drum spin smoothly on its shaft, and after years of high-speed cycles they wear out, producing a loud grinding or airplane-like roar during spin. The repair is legitimate but labor-heavy: reaching the bearings usually means dismantling much of the machine. Because of that labor, a bearing job on an older washer can approach the price of a new machine.

Keeping the Drum Clean and Healthy

Repair the Drum or Replace the Washer?

Minor drum issues — a trapped coin, a worn belt, tired shock absorbers — are usually worth fixing on almost any washer. Major drum work, especially bearing replacement, is where you have to do the math: on a machine over roughly 8 years old, the labor can cost enough that a new washer makes more sense. Run your quote and the washer’s age through the repair-or-replace calculator to get a clear verdict.

Telling a Bearing From Something Loose

Nearly every drum complaint arrives as a noise, and the useful question is whether the noise is the drum itself or something sitting against it. The two sound different and they cost very different amounts, so it is worth ten minutes before anybody is called out.

Open the door and turn the drum by hand, slowly, with the machine off. A bearing that has gone will feel gritty or notchy through your fingers and often makes a low grinding sound at walking pace. A loose object trapped between the drum and the outer tub gives a distinct rattle or scrape at one point in the rotation and nowhere else. Then push the drum up and down at the front edge: real vertical play, more than a couple of millimetres, is the bearing.

The third possibility on a top-loader is the suspension rather than the drum. If the noise only appears at spin speed and the machine walks or bangs against the cabinet, the shock absorbers or suspension rods have gone and the drum is fine. That repair is a fraction of a bearing job, which is why it is worth separating the two before assuming the worst.

The Spider Arm, the Failure Nobody Names

On a front-loading washer the stainless drum does not bolt straight to the shaft. It is carried on a three-legged aluminium casting called the spider arm, and that casting sits in the wettest, most chemically hostile place in the machine. Detergent residue, hot water and aluminium do not get on: the arm corrodes, loses material, and eventually cracks at a leg.

The symptom is a heavy knocking at spin that gets worse over weeks, sometimes with black or grey residue appearing on washing. It reads like a bearing, and it is often diagnosed as one, but replacing a bearing on a machine with a corroded spider arm fixes nothing for long. On most models the spider is not sold separately, so the repair means a complete drum assembly, and that is the point at which replacing the washer usually wins on arithmetic.

What accelerates it is worth knowing, because it is under your control: too much detergent, consistently cold washes that never clear the residue, and leaving wet loads sitting in the drum. None of that is exotic advice, it is simply the mechanism by which a ten-year part becomes a six-year part.

What Replacing a Drum Actually Involves

The reason drum work costs what it does is not the part, it is the access. On a front-loader the outer tub usually has to come out of the cabinet, which means the door boot, the counterweights, the shock absorbers, the heater and often the wiring loom all come off first. On many modern machines the outer tub is sealed as one moulded unit, so the bearing cannot be pressed out at all and the whole tub assembly is the part.

Top-loaders are kinder. The basket lifts out from above on most designs, and a bearing or a set of suspension rods is a straightforward job that does not require dismantling the cabinet.

That difference is why the same complaint gets very different advice depending on the machine, and why we quote it rather than guess. If you want the numbers before committing, the washer repair cost database carries the ranges, and the repair-vs-replace calculator does the comparison against a new machine.

Where the Drum Actually Is

People search for this more than anything else about a washer, and the answer differs by machine. On a top-loader the drum is the perforated basket you drop laundry into: open the lid and you are looking straight at it. What you cannot see from there is the outer tub around it, which holds the water and hides the parts that fail. On a front-loader the drum is the horizontal barrel behind the door glass, and everything around it, the outer tub, the bearings, the shaft and the seal, sits inside a sealed shell that has to come out of the cabinet to be worked on.

The word people use varies too. Drum, tub, basket and barrel all get used for the same thing in everyday speech, and manufacturers are not consistent either. In service terms only one distinction matters: the inner drum spins and holds clothes, the outer tub does not spin and holds water. Nearly every expensive washer repair lives in the gap between those two, because that is where the shaft, the seal and the bearings sit.

The Parts of the Drum Assembly

When a quote names a part, this is where it lives and why it costs what it does.

The pattern worth noticing: the parts that hold the drum steady are cheap and reachable, and the parts inside the tub are not. That is why an honest diagnosis matters more here than on any other appliance. A washer that bangs on spin is far more often loose counterweights or spent suspension than a failed bearing, and those are different bills.

How to Balance the Drum

Most drums that seem out of balance are not damaged at all. Work through this in order before anyone is called.

• Level the machine first. Put a spirit level on the top panel front to back and side to side, then adjust the feet until it reads level and none of the four rock. On most washers the rear feet self-adjust when the machine is tilted forward and set back down.
• Push down on each corner in turn. Any movement means a foot is short. A washer that rocks by a few millimetres standing still will walk across the floor at 1 000 rpm.
• Check the floor, not only the washer. A springy timber floor lets a perfectly level machine bounce. A sheet of plywood under both feet lines, or an anti-vibration mat, fixes more of these than parts do.
• Look for transit bolts on a newer front-loader. They ship with the drum bolted rigid, and a machine moved house with them left in will hammer itself apart.
• Rebalance the load. One bath sheet or a single pair of jeans is the classic offender: it soaks up water on one side and the machine cannot spin it out. Add two or three items to spread the weight, do not remove the wet one.
• Then, and only then, suspect the machine. If it is level, the load is spread and it still walks or bangs, the suspension rods, dampers or counterweight bolts are the next suspects, in that order.

One thing that is not a fault: modern washers pause, refill and redistribute a load several times before a fast spin, and a cycle that takes longer because of it is the machine protecting its own bearings.

What Drum Repair Costs

The figures below come from our own completed washing-machine jobs, with the base printed beside each one.

Read the bands rather than the median. Nine repairs in ten finish under $519, because most of what goes wrong around a drum is reachable without splitting the tub. The tenth is bearing territory, and that is where the decision changes shape: on a machine under six or seven years old, with an otherwise sound cabinet, the repair usually still wins; past ten, with a tub that has to be cut or replaced whole, it usually does not. The wider price picture for the appliance is in the washer repair cost database.

Drum Detached, or Just Loose?

A drum that has genuinely come away from its mounting is rare, and it announces itself: the basket drops or tilts visibly, metal grinds on metal the moment the machine moves, and the door or lid may no longer line up. Far more common are three faults that feel identical from the outside.

• A broken spider arm lets the drum sag on its shaft. Grab the drum at the top and bottom and rock it: obvious play in and out means the spider or the bearing, not a loose bolt.
• A snapped suspension rod or spring drops one corner of the whole tub. The drum itself is fine; it is hanging crooked.
• A shifted counterweight makes the machine lurch heavily on spin with no noise at rest.

All three are worth stopping the machine for. Running a washer with a sagging drum grinds the seal, and a seal that goes takes the bearings with it, which is exactly how a $200 repair becomes an $800 one.

Frequently Asked Questions

Last updated: July 2026