Bearing Spec Finder
Find bearings by dimensions, closure type, and bearing class with clean mm/inch conversion.
Common ISO sizes
How to Find a Bearing by Size
Search with bore (d), outer diameter (D), and width (B). You can enter values in millimeters or inches, and BearingBrain converts automatically to ISO metric dimensions.
Add tolerance (±) when measurements are approximate, then narrow by bearing type and closure style (open, sealed, or shielded) to match the application.
Use sort options to prioritize manufacturer grouping, best dimensional fit, lower price, higher grease speed, or higher dynamic load.