MPNbase

30 mm bore bearings

56 models with a 30 mm (1.181 in) bore across 8 bearing types, outside diameters from 37 to 90 mm. Tables are grouped by type; open a model for full specs and equivalents.

56 models 37–90 mm OD range 5 brands

Angular Contact Ball Bearings (6)

Model Series d (mm) D (mm) B (mm) Brand Seal Clearance C (kN)
71806 71800 30 42 7 GENERIC-ISO open CN —
71906 71900 30 47 9 GENERIC-ISO open CN —
7006 7000 30 55 13 GENERIC-ISO open CN —
7206 7200 30 62 16 GENERIC-ISO open CN —
7306 7300 30 72 19 GENERIC-ISO open CN —
7406 7400 30 90 23 GENERIC-ISO open CN —

Cylindrical Roller Bearings (4)

Model Series d (mm) D (mm) B (mm) Brand Seal Clearance C (kN)
NU206 NU200 30 62 16 GENERIC-ISO open CN —
NU2206 NU2200 30 62 20 GENERIC-ISO open CN —
NU306 NU300 30 72 19 GENERIC-ISO open CN —
NU2306 NU2300 30 72 27 GENERIC-ISO open CN —

Deep Groove Ball Bearings (24)

Model Series d (mm) D (mm) B (mm) Brand Seal Clearance C (kN)
61806 61800 30 42 7 SKF open CN 4.49
61806-2RS 61800 30 42 7 SKF 2RS CN 4.49
61806-RSR 61800 30 42 7 SKF RSR CN 4.49
61806-ZZ 61800 30 42 7 NSK ZZ CN 5.2
61906 61900 30 47 9 SKF open CN 7.28
61906-2RS 61900 30 47 9 SKF 2RS CN 7.28
61906-RSR 61900 30 47 9 SKF RSR CN 7.28
61906-ZZ 61900 30 47 9 NSK ZZ CN 7.95
16006 16000 30 55 9 FAG open CN 11.22
6006 6000 30 55 13 NSK open CN 14.6
6006-2RS 6000 30 55 13 SKF 2RS CN 13.8
6006-RSR 6000 30 55 13 SKF RSR CN 13.8
6006-ZZ 6000 30 55 13 SKF ZZ CN 13.8
6206 6200 30 62 16 SKF open CN 20.3
6206-2RS 6200 30 62 16 SKF 2RS CN 20.3
6206-RSR 6200 30 62 16 SKF RSR CN 20.3
6206-ZZ 6200 30 62 16 SKF ZZ CN 20.3
6306 6300 30 72 19 SKF open CN 29.6
6306-2RS 6300 30 72 19 SKF 2RS CN 29.6
6306-RSR 6300 30 72 19 SKF RSR CN 29.6
6306-ZZ 6300 30 72 19 SKF ZZ CN 29.6
6406 6400 30 90 23 SKF open CN 43.6
6406-2RS 6400 30 90 23 GENERIC-ISO 2RS CN 43.6
6406-ZZ 6400 30 90 23 NTN ZZ CN 48

Needle Roller Bearings (5)

Model Series d (mm) D (mm) B (mm) Brand Seal Clearance C (kN)
HK3012CT HK 30 37 12 NTN open — 12.3
7E-HK3016C HK 30 37 16 NTN open — 18.1
HK3020F HK 30 37 20 NTN open — 22.3
HK3026F HK 30 37 26 NTN open — 28.5
HK3038ZWD HK 30 37 38 NTN open — 38.5

Self-Aligning Ball Bearings (8)

Model Series d (mm) D (mm) B (mm) Brand Seal Clearance C (kN)
1206 1200 30 62 16 NTN open — 15.8
1206K 1200 30 62 16 NTN open — 15.8
2206 2200 30 62 20 NTN open — 15.3
2206K 2200 30 62 20 NTN open — 15.3
1306 1300 30 72 19 NTN open — 21.4
1306K 1300 30 72 19 NTN open — 21.4
2306 2300 30 72 27 NTN open — 32
2306K 2300 30 72 27 NTN open — 32

Spherical Roller Bearings (1)

Model Series d (mm) D (mm) B (mm) Brand Seal Clearance C (kN)
22206 22200 30 62 20 GENERIC-ISO open CN —

Tapered Roller Bearings (4)

Model Series d (mm) D (mm) B (mm) Brand Seal Clearance C (kN)
32006 32000 30 55 17 GENERIC-ISO open CN —
30206 30200 30 62 17.25 GENERIC-ISO open CN —
32206 32200 30 62 21.25 GENERIC-ISO open CN —
32306 32300 30 72 28.75 GENERIC-ISO open CN —

Thrust Ball Bearings (4)

Model Series d (mm) D (mm) B (mm) Brand Seal Clearance C (kN)
51106 51100 30 47 11 NTN open — 16
51206 51200 30 52 16 NTN open — 26
51306 51300 30 60 21 NTN open — 43
51406 51400 30 70 28 NTN open — 72

Exact-dimension interchange groups at 30 mm bore

These d×D×B envelopes at a 30 mm bore are shared by several series or brands — the starting point for a dimensional cross reference:

Selecting a 30 mm bore bearing

The bore fixes the shaft, not the bearing capacity. At 30 mm the catalog spans 37–90 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 30 mm bore?

This index lists 56 verified bearing models with a 30 mm (1.181 in) bore across 8 bearing types, from 37 to 90 mm outside diameter. Open any model for the full specification table, seal/clearance options and graded cross references.

How do I choose between the 37–90 mm OD options for a 30 mm shaft?

On a fixed 30 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 30 mm bearings?

A 30 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 30 mm is bore code 06 (code × 5), so a 62-series bearing with this bore is the 6206.