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90 mm bore bearings

51 models with a 90 mm (3.543 in) bore across 7 bearing types, outside diameters from 115 to 225 mm. Tables are grouped by type; open a model for full specs and equivalents.

51 models 115–225 mm OD range 4 brands

Angular Contact Ball Bearings (5)

Model Series d (mm) D (mm) B (mm) Brand Seal Clearance C (kN)
71818 71800 90 115 13 GENERIC-ISO open CN —
71918 71900 90 125 18 GENERIC-ISO open CN —
7018 7000 90 140 24 GENERIC-ISO open CN —
7218 7200 90 160 30 GENERIC-ISO open CN —
7318 7300 90 190 43 GENERIC-ISO open CN —

Cylindrical Roller Bearings (2)

Model Series d (mm) D (mm) B (mm) Brand Seal Clearance C (kN)
NU218 NU200 90 160 30 GENERIC-ISO open CN —
NU318 NU300 90 190 43 GENERIC-ISO open CN —

Deep Groove Ball Bearings (24)

Model Series d (mm) D (mm) B (mm) Brand Seal Clearance C (kN)
61818 61800 90 115 13 SKF open CN 19.5
61818-2RS 61800 90 115 13 SKF 2RS CN 19.5
61818-RSR 61800 90 115 13 SKF RSR CN 19.5
61818-ZZ 61800 90 115 13 NSK ZZ CN 20.9
61918 61900 90 125 18 SKF open CN 33.2
61918-2RS 61900 90 125 18 NSK 2RS CN 36
61918-RSR 61900 90 125 18 NSK RSR CN 36
61918-ZZ 61900 90 125 18 NSK ZZ CN 36
16018 16000 90 140 16 NTN open CN 37
6018 6000 90 140 24 SKF open CN 60.5
6018-2RS 6000 90 140 24 SKF 2RS CN 60.5
6018-RSR 6000 90 140 24 NSK RSR CN 64
6018-ZZ 6000 90 140 24 SKF ZZ CN 60.5
6218 6200 90 160 30 SKF open CN 101
6218-2RS 6200 90 160 30 SKF 2RS CN 101
6218-RSR 6200 90 160 30 NSK RSR CN 106
6218-ZZ 6200 90 160 30 SKF ZZ CN 101
6318 6300 90 190 43 SKF open CN 151
6318-2RS 6300 90 190 43 SKF 2RS CN 151
6318-RSR 6300 90 190 43 NSK RSR CN 157
6318-ZZ 6300 90 190 43 SKF ZZ CN 151
6418 6400 90 225 54 SKF open CN 186
6418-2RS 6400 90 225 54 GENERIC-ISO 2RS CN 186
6418-ZZ 6400 90 225 54 GENERIC-ISO ZZ CN 186

Self-Aligning Ball Bearings (8)

Model Series d (mm) D (mm) B (mm) Brand Seal Clearance C (kN)
1218 1200 90 160 30 NTN open — 57.5
1218K 1200 90 160 30 NTN open — 57.5
2218 2200 90 160 40 NTN open — 70.5
2218K 2200 90 160 40 NTN open — 70.5
1318 1300 90 190 43 NTN open — 117
1318K 1300 90 190 43 NTN open — 117
2318 2300 90 190 64 NTN open — 154
2318K 2300 90 190 64 NTN open — 154

Spherical Roller Bearings (4)

Model Series d (mm) D (mm) B (mm) Brand Seal Clearance C (kN)
23018 23000 90 140 37 GENERIC-ISO open CN —
22218 22200 90 160 40 GENERIC-ISO open CN —
21318 21300 90 190 43 GENERIC-ISO open CN —
22318 22300 90 190 64 GENERIC-ISO open CN —

Tapered Roller Bearings (4)

Model Series d (mm) D (mm) B (mm) Brand Seal Clearance C (kN)
32018 32000 90 140 32 GENERIC-ISO open CN —
30218 30200 90 160 32.5 GENERIC-ISO open CN —
32218 32200 90 160 42.5 GENERIC-ISO open CN —
32318 32300 90 190 67.5 GENERIC-ISO open CN —

Thrust Ball Bearings (4)

Model Series d (mm) D (mm) B (mm) Brand Seal Clearance C (kN)
51118 51100 90 120 22 NTN open — 59.5
51218 51200 90 135 35 NTN open — 125
51318 51300 90 155 50 NTN open — 213
51418 51400 90 190 77 NTN open — 305

Exact-dimension interchange groups at 90 mm bore

These d×D×B envelopes at a 90 mm bore are shared by several series or brands — the starting point for a dimensional cross reference:

Selecting a 90 mm bore bearing

The bore fixes the shaft, not the bearing capacity. At 90 mm the catalog spans 115–225 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 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 90 mm bore?

This index lists 51 verified bearing models with a 90 mm (3.543 in) bore across 7 bearing types, from 115 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 115–225 mm OD options for a 90 mm shaft?

On a fixed 90 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 90 mm bearings?

A 90 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 90 mm is bore code 18 (code × 5), so a 62-series bearing with this bore is the 6218.