MPNbase

28.575 mm bore bearings

21 models with a 28.575 mm (1.125 in) bore across 2 bearing types, outside diameters from 56.896 to 73.025 mm. Tables are grouped by type; open a model for full specs and equivalents.

21 models 56.896–73.025 mm OD range 2 brands

Insert Bearings (Y-bearings) (5)

Model Series d (mm) D (mm) B (mm) Brand Seal Clearance C (kN)
YET-206-102 YEL2 28.575 62 23.8 SKF open CN 19.5
YEL-206-102-2F YEL2 28.575 62 36.5 SKF 2RS CN 19.5
YELAG-206-102 YEL2 28.575 62 36.5 SKF 2RS CN 19.5
YAR-206-102-2F YAR2 28.575 62 38.1 SKF 2RS CN 19.5
YARAG-206-102 YAR2 28.575 62 38.1 SKF 2RS CN 19.5

Tapered Roller Bearings (16)

Model Series d (mm) D (mm) B (mm) Brand Seal Clearance C (kN)
1985-1930 4t-inch 28.575 56.896 19.845 NTN open CN 45
15590-15520 4t-inch 28.575 57.15 17.462 NTN open CN 44
1985-1922 1900 28.575 57.15 19.845 SKF open CN 58.2
1988-1922 1900 28.575 57.15 19.845 SKF open CN 58.2
1985-1932 4t-inch 28.575 58.738 19.05 NTN open CN 45
15590-15523 4t-inch 28.575 60.325 19.842 NTN open CN 44
1985-1931 4t-inch 28.575 60.325 19.845 NTN open CN 45
15112-15245 4t-inch 28.575 62 19.05 NTN open CN 52
M86647-610 M86600 28.575 64.292 21.433 SKF open CN 60.4
M86647-M86610 4t-inch 28.575 64.292 21.433 NTN open CN 57.5
2689-2631 4t-inch 28.575 66.421 23.812 NTN open CN 71.5
02474-02420 4t-inch 28.575 68.262 22.225 NTN open CN 63
2474-2420 4t-inch 28.575 68.262 22.225 NTN open CN 64
2578-2523 4t-inch 28.575 69.85 23.812 NTN open CN 76.5
41125-41286 4t-inch 28.575 72.626 24.608 NTN open CN 64.5
02872-02820 4t-inch 28.575 73.025 22.225 NTN open CN 62.5

Selecting a 28.575 mm bore bearing

The bore fixes the shaft, not the bearing capacity. At 28.575 mm the catalog spans 56.896–73.025 mm outside diameter: the light sections suit compact housings and moderate duty, while the larger ODs use bigger rolling elements and carry substantially more load. Select first by the required dynamic load rating C for the calculated L10 life, then by available radial space.

For a rotating inner ring a k5 shaft seat with an H7 housing is the usual starting point; an interference fit plus thermal growth consumes internal clearance, so C3 is the common industrial default rather than CN. Sealed variants (-2RS, -ZZ) trade a small amount of speed for contamination protection and maintenance-free operation — compare the sealed and open versions of the same envelope before substituting one for the other.

Frequently asked questions

What bearings have a 28.575 mm bore?

This index lists 21 verified bearing models with a 28.575 mm (1.125 in) bore across 2 bearing types, from 56.896 to 73.025 mm outside diameter. Open any model for the full specification table, seal/clearance options and graded cross references.

How do I choose between the 56.896–73.025 mm OD options for a 28.575 mm shaft?

On a fixed 28.575 mm bore, a smaller outside diameter means a lighter section for limited housing space and moderate load; a larger OD with a wider ring carries more radial and axial load and lasts longer at the same duty. Compare the C dynamic load rating in each model table, then match seal type, internal clearance (CN/C3/C4) and precision class to the actual mounting and operating temperature.

What shaft fit and bore code apply to 28.575 mm bearings?

A 28.575 mm bore on a rotating inner ring normally uses a k5 shaft seat with an H7 housing bore (verify against the catalogue for heavy or stationary-ring duty). Bore diameters below 20 mm follow the 10/12/15/17 mm exception table rather than code × 5.