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100 mm bore bearings

51 models with a 100 mm (3.937 in) bore across 7 bearing types, outside diameters from 125 to 250 mm. Tables are grouped by type; open a model for full specs and equivalents.

51 models 125–250 mm OD range 4 brands

Angular Contact Ball Bearings (5)

Model Series d (mm) D (mm) B (mm) Brand Seal Clearance C (kN)
71820 71800 100 125 13 GENERIC-ISO open CN —
71920 71900 100 140 20 GENERIC-ISO open CN —
7020 7000 100 150 24 GENERIC-ISO open CN —
7220 7200 100 180 34 GENERIC-ISO open CN —
7320 7300 100 215 47 GENERIC-ISO open CN —

Cylindrical Roller Bearings (2)

Model Series d (mm) D (mm) B (mm) Brand Seal Clearance C (kN)
NU220 NU200 100 180 34 GENERIC-ISO open CN —
NU320 NU300 100 215 47 GENERIC-ISO open CN —

Deep Groove Ball Bearings (24)

Model Series d (mm) D (mm) B (mm) Brand Seal Clearance C (kN)
61820 61800 100 125 13 SKF open CN 17.8
61820-2RS 61800 100 125 13 SKF 2RS CN 17.8
61820-RSR 61800 100 125 13 SKF RSR CN 17.8
61820-ZZ 61800 100 125 13 NSK ZZ CN 21.5
61920 61900 100 140 20 SKF open CN 42.3
61920-2RS 61900 100 140 20 NSK 2RS CN 47
61920-RSR 61900 100 140 20 NSK RSR CN 47
61920-ZZ 61900 100 140 20 NSK ZZ CN 47
16020 16000 100 150 16 NTN open CN 39
6020 6000 100 150 24 SKF open CN 63.7
6020-2RS 6000 100 150 24 SKF 2RS CN 63.7
6020-RSR 6000 100 150 24 NSK RSR CN 66
6020-ZZ 6000 100 150 24 SKF ZZ CN 63.7
6220 6200 100 180 34 SKF open CN 127
6220-2RS 6200 100 180 34 SKF 2RS CN 127
6220-RSR 6200 100 180 34 NSK RSR CN 134
6220-ZZ 6200 100 180 34 SKF ZZ CN 127
6320 6300 100 215 47 NSK open CN 191
6320-2RS 6300 100 215 47 SKF 2RS CN 174
6320-RSR 6300 100 215 47 NSK RSR CN 191
6320-ZZ 6300 100 215 47 SKF ZZ CN 174
6420 6400 100 250 58 GENERIC-ISO open CN —
6420-2RS 6400 100 250 58 GENERIC-ISO 2RS CN —
6420-ZZ 6400 100 250 58 GENERIC-ISO ZZ CN —

Self-Aligning Ball Bearings (8)

Model Series d (mm) D (mm) B (mm) Brand Seal Clearance C (kN)
1220 1200 100 180 34 NTN open — 69.5
1220K 1200 100 180 34 NTN open — 69.5
2220 2200 100 180 46 NTN open — 94.5
2220K 2200 100 180 46 NTN open — 94.5
1320 1300 100 215 47 NTN open — 140
1320K 1300 100 215 47 NTN open — 140
2320 2300 100 215 73 NTN open — 187
2320K 2300 100 215 73 NTN open — 187

Spherical Roller Bearings (4)

Model Series d (mm) D (mm) B (mm) Brand Seal Clearance C (kN)
23020 23000 100 150 37 GENERIC-ISO open CN —
22220 22200 100 180 46 GENERIC-ISO open CN —
21320 21300 100 215 47 GENERIC-ISO open CN —
22320 22300 100 215 73 GENERIC-ISO open CN —

Tapered Roller Bearings (4)

Model Series d (mm) D (mm) B (mm) Brand Seal Clearance C (kN)
32020 32000 100 150 32 GENERIC-ISO open CN —
30220 30200 100 180 37 GENERIC-ISO open CN —
32220 32200 100 180 49 GENERIC-ISO open CN —
32320 32300 100 215 77.5 GENERIC-ISO open CN —

Thrust Ball Bearings (4)

Model Series d (mm) D (mm) B (mm) Brand Seal Clearance C (kN)
51120 51100 100 135 25 NTN open — 85
51220 51200 100 150 38 NTN open — 147
51320 51300 100 170 55 NTN open — 237
51420 51400 100 210 85 NTN open — 370

Exact-dimension interchange groups at 100 mm bore

These d×D×B envelopes at a 100 mm bore are shared by several series or brands — the starting point for a dimensional cross reference:

Selecting a 100 mm bore bearing

The bore fixes the shaft, not the bearing capacity. At 100 mm the catalog spans 125–250 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 100 mm bore?

This index lists 51 verified bearing models with a 100 mm (3.937 in) bore across 7 bearing types, from 125 to 250 mm outside diameter. Open any model for the full specification table, seal/clearance options and graded cross references.

How do I choose between the 125–250 mm OD options for a 100 mm shaft?

On a fixed 100 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 100 mm bearings?

A 100 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). In the ISO designation system 100 mm is bore code 20 (code × 5), so a 62-series bearing with this bore is the 6220.