Bearing dimensions finder

Two ways into the catalog when you are replacing a bearing: start from the bore size on the shaft, or from the exact d×D×B envelope stamped on the old bearing. Every table links to the verified model page with full specifications and cross references.

33 bore sizes 158 interchangeable envelopes Boundary dimensions per ISO 15

Bearings by bore size

Each bore page lists every model in the database with that shaft diameter, grouped by bearing type, with outside diameter, width, seal, clearance and load rating.

Interchangeable envelopes (same d×D×B)

Bearings sharing one ISO 15 boundary envelope are dimensionally interchangeable across series and brands — but load rating, seals and clearance must still be verified before substitution. The most common envelopes:

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