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Bearings 45 x 100 x 27.25 mm: SKF, FAG, RKB, and TIMKEN part numbers

The MR catalog lists 10 bearing part numbers with boundary dimensions 45 x 100 x 27.25 mm (d x D x T), from 4 brands: SKF (4), FAG (2), RKB (2), and TIMKEN (2). Each part number in the tables links to its product page, so you can request a quote via WhatsApp or email.

Bearings by size: all sizes →Bearing size chart (PDF) →

Tapered roller bearings 45 x 100 x 27.25 mm

10 part numbersSee all tapered roller bearings →

Tapered roller bearings 45 x 100 x 27.25 mm (d x D x T), by brand and basic designation.
BrandBasic designationSeriesVariants
SKF30309303
SKF31309313
FAG30309303
FAG31309313
RKB30309303
RKB31309313
TIMKEN30309303
TIMKEN31309313

They are all the same bearing type: tapered roller bearings (10 part numbers, series 303 and 313).

5 of the 10 part numbers are the basic designation alone, without a suffix. The most frequent suffixes, with the number of part numbers they appear in: A (1), CL7C (1), J2 (1), QCL7C (1), and VA983 (1).

These are boundary dimensions according to ISO 355, in millimetres: d is the bore, D the outside diameter and T the total width (tapered bearings).

Two bearings with the same size are not necessarily the same bearing: the type, the seals or shields, the internal clearance, the cage and the load rating depend on the designation, the suffix and the brand. That is why we quote by part number: send us the full part number shown on the bearing, the box or the drawing, or the size together with the variant you need.

If the part number can no longer be read, measure the bore, the outside diameter and the width, and look the size up in the bearings-by-size index: each size has its own page with all its part numbers.

Size tables by series

Each series with all its sizes, in its brand table:

Do you need a 45 x 100 x 27.25 mm bearing?

Send us the full part number, or the size with the variant you need, and the quantity: we will quote it via WhatsApp or email.

Bearings by size: all sizes →

Request a quote on WhatsApp