Bearing Cross-Reference

Cross-brand equivalents across 10 bearing types — deep groove ball, angular contact ball, four-point contact (QJ), self-aligning ball, insert/mounted ball (UC), cylindrical roller (N/NU), needle roller (RNA), spherical roller, tapered roller and thrust ball. 1009 sizes, each with brand designations, catalog links and interchange notes.

Bearing guides

Engineer-checked guides on how to read, compare and choose bearings — the knowledge behind every cross-reference here:

Find a bearing

Know the number? Type it below. Know only the size? Find a bearing by its bore diameter →

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Boundary-dimension reference only. Match seal, clearance and precision suffixes before substituting any bearing.