How to spot a fake bearing before it fails

Counterfeit bearings are one of the oldest problems in our trade. A fake 6205 can look almost identical to a genuine one, cost a little less, and fail in a fraction of the time, often taking a motor, a gearbox or a production day with it. Here is what to look for.

1. A price that is too good

Genuine bearings from the major makers have a fairly narrow price range. If a premium-brand bearing is offered well below what every other dealer charges, ask why. Large “clearance” lots of premium brands are a classic warning sign.

2. Packaging that is almost right

• Blurred or uneven printing, faded colours, or a box that is a slightly different shade from the one you know
• Spelling mistakes, or fonts that do not match the maker’s usual style
• Missing or generic labels, or a label that does not match the bearing inside
• Several boxes with exactly the same batch or serial code

3. Markings on the bearing itself

Genuine makers mark the ring face cleanly and consistently. Be wary of markings that are shallow, smudged or crooked, that use a different style from the brand’s usual one, or that have no country of manufacture where the brand normally shows it.

4. How it feels and sounds

Spin a new bearing by hand. A genuine bearing runs smoothly and quietly. A rough, gritty or noisy feel, uneven shields, or loose seals are bad signs, though some of these only show up once it is running.

5. Check with the maker

Several manufacturers offer ways to check authenticity. SKF has its SKF Authenticate app, and Schaeffler (FAG and INA) has OriginCheck. If you are unsure, the maker’s own tools are the final word.

The simplest protection

Buy from a supplier who buys through authorised channels and will stand behind what they sell. That has been our rule at the counter since 1974. If you are not sure about bearings you already hold, bring them in and we will give you an honest opinion.

Looking for a specific brand? See our pages for SKF, FAG, NSK and all brands.