Bearings

First measure the bearing in millimetres

Bearings are measured always in the order -

Shaft x Outside Diameter x Width.

Second identify the type

Is it a standard single row ball bearing - the most common type, such as a 6203 2RS?

It is extremely unlikely that bearing failure is due to poor bearing quality. Bearings from Japanese, European and Korean sources are manufactured in highly automated ways to the same international standards with strict quality control. We have supplied many different brands from these sources over more than twenty years with good results.

When bearings do fail it is almost always for reasons totally unrelated to the quality of the bearing as follows: -