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53.975 mm bore bearings

27 models with a 53.975 mm (2.125 in) bore across 1 bearing type, outside diameters from 88.9 to 140.03 mm. Tables are grouped by type; open a model for full specs and equivalents.

27 models 88.9–140.03 mm OD range 2 brands

Tapered Roller Bearings (27)

Model Series d (mm) D (mm) B (mm) Brand Seal Clearance C (kN)
LM806649-610 LM806600 53.975 88.9 19.05 SKF open CN 71.5
LM806649-LM806610 4t-inch 53.975 88.9 19.05 NTN open CN 67.5
33895-33821 33800 53.975 95.25 27.783 SKF open CN 129
33895-33822 33800 53.975 95.25 27.783 SKF open CN 129
33895-33822-NTN 4t-inch 53.975 95.25 27.783 NTN open CN 119
387-382A 385 53.975 96.838 21 SKF open CN 99.9
389A-382A 4t-inch 53.975 96.838 21 NTN open CN 86.5
387A-382S 385 53.975 96.838 25.4 SKF open CN 99.9
387-382 385 53.975 98.425 21 SKF open CN 99.9
45287-45220 4t-inch 53.975 104.775 30.162 NTN open CN 144
462-453X 455 53.975 104.775 30.162 SKF open CN 150
HM807049-HM807010 4t-inch 53.975 104.775 36.512 NTN open CN 153
539-532X 535 53.975 107.95 36.512 SKF open CN 183
539-532X-NTN 4t-inch 53.975 107.95 36.512 NTN open CN 157
539-532A 535 53.975 111.125 38.1 SKF open CN 183
39580-39520 39500 53.975 112.712 30.162 SKF open CN 175
39581-39520 39500 53.975 112.712 30.162 SKF open CN 175
39580-39528 39500 53.975 119.985 32.751 SKF open CN 175
39581-39528 39500 53.975 119.985 32.751 SKF open CN 175
621-612 4t-inch 53.975 120.65 41.275 NTN open CN 190
66584-66520 4t-inch 53.975 122.238 33.338 NTN open CN 149
5578-5535 4t-inch 53.975 122.238 43.658 NTN open CN 215
72212-72487 72000 53.975 123.825 36.512 SKF open CN 174
72212C-72487 4t-inch 53.975 123.825 36.512 NTN open CN 171
557S-552A 4t-inch 53.975 123.825 38.1 NTN open CN 175
HM911242-HM911210 4t-inch 53.975 130.175 36.512 NTN open CN 173
78214C-78551 4t-inch 53.975 140.03 36.512 NTN open CN 190

Exact-dimension interchange groups at 53.975 mm bore

These d×D×B envelopes at a 53.975 mm bore are shared by several series or brands — the starting point for a dimensional cross reference:

Selecting a 53.975 mm bore bearing

The bore fixes the shaft, not the bearing capacity. At 53.975 mm the catalog spans 88.9–140.03 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 53.975 mm bore?

This index lists 27 verified bearing models with a 53.975 mm (2.125 in) bore across 1 bearing type, from 88.9 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 88.9–140.03 mm OD options for a 53.975 mm shaft?

On a fixed 53.975 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 53.975 mm bearings?

A 53.975 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.