Bearing interchange & cross-reference search

A bearing interchange (or cross-reference) is an equivalent bearing from a different manufacturer that shares the same boundary dimensions (bore, outside diameter, width) and the same key features, so it can replace the original in the same application.

Type the manufacturer part number into the search box. The Apollo Bearing Index returns the same designation family from every brand it knows, plus verified interchanges and ISO-equivalent designations, ranked by how well they match your suffixes.

Yes. Suffixes describe seals or shields (2RS, ZZ), internal clearance (C3, C4), cage material (M, TVP2, ECP) and precision class (P5, P4). A correct interchange matches these features, not just the base number. If no exact variant is on file the tool shows the family and tells you which attribute it relaxed.

The two designations describe the same ISO 15 / ISO 355 boundary dimensions and series under different manufacturer grammars (for example SKF 6205 and Fafnir 205K). They are derived from the designation system rather than from a manufacturer's own interchange table, so confirm suffixes and load ratings before you order.

UC205 is the insert bearing alone: a wide-inner-ring ball bearing with a spherical outside diameter and set-screw locking, 25 mm bore. UCP205 is that insert fitted in a cast pillow-block housing. UCF, UCFL and UCT use the same insert in four-bolt flange, two-bolt flange and take-up housings. A dash number such as UCP205-16 marks an inch bore (16/16 = 1 inch).

FAG writes suffixes with hyphens: NU2332 is the base (cylindrical roller, 160 mm bore), E is the high-capacity design, M1 a machined brass cage. On 6206-C-2HRS, C marks the Generation C deep groove design and 2HRS a contact seal on both sides (the older designation was 6206-2RSR). Paste either form and the decoder explains each token.

Inch deep groove ball bearings use an R number where the bore is that many sixteenths of an inch: R8 is 1/2 inch (12.7 mm), R12 is 3/4 inch (19.05 mm), R16 is 1 inch. The tool converts them so you can search in either unit.

Family match means the same designation family from another brand. Verified interchange is a cross-reference confirmed by manufacturer catalog evidence with matching dimensions. ISO-equivalent is derived from the designation system. Catalog cross-reference is a published assertion we could not fully dimension-check; treat it as a lead, not a guarantee.

Yes. Use the Dimensions tab, or type the size straight into the search box (25x52x15, or 1-1/4 inch bore). Enter bore, outside diameter and width in millimetres or inches and choose how tight the match should be.

Yes. The Equipment tab lists machines by category, manufacturer and model with the bearings at each position. Typing a machine name such as Haas VF-2 into the search box routes you there directly.

Yes. It is free, requires no account, and the data comes from manufacturer-published catalogs and designation standards. Request a quote from any result and our team confirms availability and pricing.

No. Cross-references are a reference aid compiled from manufacturer catalogs and designation standards. Always verify the original equipment manufacturer's specifications, fit and application requirements before purchasing.