The short answer
A Blomberg washer that has become loud is usually telling you about balance rather than about bearings. These are front-loading machines with a heavy drum on springs and dampers, and everything about how they sound depends on whether the machine is level, whether its transit bolts came out at installation, and whether the load inside it is distributed. Work those three before considering a component.
What you actually observe
- A violent banging that only happens at high spin — The drum striking the cabinet. Almost always balance, levelling or transit bolts rather than a failed part.
- The machine walks across the floor during spin — Feet that are not all bearing weight, or a floor that flexes.
- A rhythmic knocking that follows drum rotation at any speed — Something in the drum, or something that has passed through the drum into the space around it.
- A grinding or rumbling that is constant while the drum turns — This is the one that points at a bearing, and it is also the least common of the four.
- NEAR MISS - a buzz or hum for a few seconds with no drum movement — That is the drain pump or the fill valve doing its job, or trying to.
Causes, most likely first
- Transit bolts still fitted, or their holes left open — First on any front-loader that has been loud since the day it arrived or since it was last moved.
- The machine not level, or a foot not bearing weight — Second, and the most common cause on a machine that was quiet and became loud.
- An unbalanced load - one heavy item, or a load too small — Third. A single towel or a bath mat will not distribute, and the machine either bangs or abandons the spin.
- A coin, an underwire or a screw between the drum and the tub — Fourth. It arrives as a scrape or a rattle that follows rotation, and it is worth catching early because loose metal damages the tub.
- Drum bearings, dampers or the counterweight bolts — Last. A genuine bearing failure rumbles constantly and gets worse over weeks; dampers that have lost their friction let the drum swing much further than it should.
Check in this order, and why
- Look at the back of the machine for transit bolts or their open holes — Bolts still fitted is a diagnosis on sight.
- Push each top corner in turn and put a level on the top panel — Any rock at all is a fault. All four feet must bear weight and their locknuts must be tight against the cabinet.
- Redistribute the load by hand and run a spin on its own — If the machine is quiet on a redistributed load, nothing is broken - the balance detection was doing exactly what it should.
- Turn the empty drum slowly by hand and listen — A scrape that follows the drum, or a rattle at one point in the rotation, points at something between the drum and the tub.
What an owner can safely check
- Check the rear panel for transit bolts before anything else — If the machine has been moved recently this is the whole answer, and it takes a moment to see.
Tools: flashlightAbout 5 min
- Level the machine and lock every foot — A spirit level on the top panel, front to back and side to side, then tighten each locknut against the cabinet so the setting cannot drift.
Tools: spirit level, spannerAbout 25 min
- Run an empty spin to separate the machine from the laundry — An empty machine that spins quietly has told you the noise belongs to the load, and no part will change that.
About 20 min
- STOP before removing the top panel, the front panel or the rear cover — The motor, the heater and the control are behind them, the drum is heavy enough to injure, and the counterweights are not held by anything you should be loosening.
Before you open anything
Safety
Unplug the washer before removing any panel - a capacitor can hold a charge after the power is off. Never reach into a drum that is still turning, and never try to slow it by hand.
When to call a technician
Call when the machine is level, the transit bolts are out, the load is balanced and the drum is clear - and it still rumbles or bangs. That pattern points at dampers, springs or drum bearings, all of which mean opening the cabinet and handling a heavy assembly.
Nearest pages of this class
What this page does not cover
This page is written for the washer across Blomberg's range, not for one family or model line. No family-level page for this brand and appliance is part of this reference surface, so what is deliberately absent here is anything that varies between families: panel layouts, wiring colours, torque figures, component positions and part numbers.
Lead Appliance Repair Technician · 12 years experience
Experienced technician with 12 years specializing in washing machine and dryer repairs across all major brands.
