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63.5 mm bore bearings

22 models with a 63.5 mm (2.500 in) bore across 2 bearing types, outside diameters from 94.458 to 140.03 mm. Tables are grouped by type; open a model for full specs and equivalents.

22 models 94.458–140.03 mm OD range 2 brands

Insert Bearings (Y-bearings) (3)

Model Series d (mm) D (mm) B (mm) Brand Seal Clearance C (kN)
YAR-213-208-2F YAR2 63.5 120 68.3 SKF 2RS CN 57.2
YAR-213-208-2RF YAR2 63.5 120 68.3 SKF 2RS CN 57.2
YAR-214-208-2F YAR2 63.5 125 69.9 SKF 2RS CN 62.4

Tapered Roller Bearings (19)

Model Series d (mm) D (mm) B (mm) Brand Seal Clearance C (kN)
L610549-L610510 4t-inch 63.5 94.458 19.05 NTN open CN 67
29585-29520 4t-inch 63.5 107.95 25.4 NTN open CN 101
29586-29520 4t-inch 63.5 107.95 25.4 NTN open CN 101
390A-394A 4t-inch 63.5 110 22 NTN open CN 99.5
395-394A 395 63.5 110 22 SKF open CN 108
29585-29521 4t-inch 63.5 110 25.4 NTN open CN 101
39585-39520 39500 63.5 112.712 30.162 SKF open CN 175
39585-39520-NTN 4t-inch 63.5 112.712 30.162 NTN open CN 153
3982-3920-NTN 4t-inch 63.5 112.712 30.162 NTN open CN 132
3982-3920 3980 63.5 112.712 30.163 SKF open CN 152
477-472 4t-inch 63.5 120 29.794 NTN open CN 142
483-472 4t-inch 63.5 120 29.794 NTN open CN 142
HM212046-HM212011 4t-inch 63.5 122.238 38.1 NTN open CN 208
5584-5535 4t-inch 63.5 122.238 43.658 NTN open CN 215
559-552A 4t-inch 63.5 123.825 38.1 NTN open CN 175
565-563 4t-inch 63.5 127 36.512 NTN open CN 181
HM813842-HM813810 4t-inch 63.5 127 36.512 NTN open CN 181
639-632 4t-inch 63.5 136.525 41.275 NTN open CN 215
78250-78551 4t-inch 63.5 140.03 36.512 NTN open CN 190

Exact-dimension interchange groups at 63.5 mm bore

These d×D×B envelopes at a 63.5 mm bore are shared by several series or brands — the starting point for a dimensional cross reference:

Selecting a 63.5 mm bore bearing

The bore fixes the shaft, not the bearing capacity. At 63.5 mm the catalog spans 94.458–140.03 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 63.5 mm bore?

This index lists 22 verified bearing models with a 63.5 mm (2.500 in) bore across 2 bearing types, from 94.458 to 140.03 mm outside diameter. Open any model for the full specification table, seal/clearance options and graded cross references.

How do I choose between the 94.458–140.03 mm OD options for a 63.5 mm shaft?

On a fixed 63.5 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 63.5 mm bearings?

A 63.5 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.