Calculator
Bearing decoder
Enter the bearing number and get the bore, the series and the meaning of the suffixes. For deep groove ball bearings, taper roller and needle roller bearings.
How the decoder reads the number
The number is split into series, bore code and suffixes. The bore follows unambiguously from the code (00 = 10, 01 = 12, 02 = 15, 03 = 17, from 04 upwards times 5). Outside diameter and width depend on the series and are listed in the bearing table. The suffixes vary by manufacturer; the decoder knows the common ones from SKF, FAG, NTN and NSK.
Questions
What happens if the decoder does not know a suffix?
Then it shows it as unknown. Manufacturer specific codes are listed in that manufacturer's catalogue.
Where is the bearing number written?
On the outer ring or on the seal, often very small. On a removed bearing read it with a magnifying glass, on a fitted one ask the workshop manual.