MPNbase

105 mm bore bearings

26 models with a 105 mm (4.134 in) bore across 3 bearing types, outside diameters from 130 to 225 mm. Tables are grouped by type; open a model for full specs and equivalents.

26 models 130–225 mm OD range 3 brands

Angular Contact Ball Bearings (3)

Model Series d (mm) D (mm) B (mm) Brand Seal Clearance C (kN)
7021 7000 105 160 26 GENERIC-ISO open CN —
7221 7200 105 190 36 GENERIC-ISO open CN —
7321 7300 105 225 49 GENERIC-ISO open CN —

Deep Groove Ball Bearings (19)

Model Series d (mm) D (mm) B (mm) Brand Seal Clearance C (kN)
61821 61800 105 130 13 SKF open CN 20.8
61821-2RS 61800 105 130 13 SKF 2RS CN 20.8
61821-RSR 61800 105 130 13 SKF RSR CN 20.8
61821-ZZ 61800 105 130 13 NSK ZZ CN 21.8
61921 61900 105 145 20 SKF open CN 44.2
61921-2RS 61900 105 145 20 GENERIC-ISO 2RS CN —
61921-RSR 61900 105 145 20 NSK RSR CN 46.5
61921-ZZ 61900 105 145 20 NSK ZZ CN 46.5
6021 6000 105 160 26 SKF open CN 76.1
6021-2RS 6000 105 160 26 SKF 2RS CN 76.1
6021-RSR 6000 105 160 26 NSK RSR CN 79.5
6021-ZZ 6000 105 160 26 SKF ZZ CN 76.1
6221 6200 105 190 36 SKF open CN 140
6221-2RS 6200 105 190 36 NSK 2RS CN 146
6221-RSR 6200 105 190 36 NSK RSR CN 146
6221-ZZ 6200 105 190 36 SKF ZZ CN 140
6321 6300 105 225 49 SKF open CN 182
6321-2RS 6300 105 225 49 NSK 2RS CN 202
6321-ZZ 6300 105 225 49 SKF ZZ CN 182

Tapered Roller Bearings (4)

Model Series d (mm) D (mm) B (mm) Brand Seal Clearance C (kN)
32021 32000 105 160 35 GENERIC-ISO open CN —
30221 30200 105 190 39 GENERIC-ISO open CN —
32221 32200 105 190 53 GENERIC-ISO open CN —
32321 32300 105 225 81.5 GENERIC-ISO open CN —

Exact-dimension interchange groups at 105 mm bore

These d×D×B envelopes at a 105 mm bore are shared by several series or brands — the starting point for a dimensional cross reference:

Selecting a 105 mm bore bearing

The bore fixes the shaft, not the bearing capacity. At 105 mm the catalog spans 130–225 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 m6 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 105 mm bore?

This index lists 26 verified bearing models with a 105 mm (4.134 in) bore across 3 bearing types, from 130 to 225 mm outside diameter. Open any model for the full specification table, seal/clearance options and graded cross references.

How do I choose between the 130–225 mm OD options for a 105 mm shaft?

On a fixed 105 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 105 mm bearings?

A 105 mm bore on a rotating inner ring normally uses a m6 shaft seat with an H7 housing bore (verify against the catalogue for heavy or stationary-ring duty). In the ISO designation system 105 mm is bore code 21 (code × 5), so a 62-series bearing with this bore is the 6221.