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40 mm bore bearings

39 models with a 40 mm (1.575 in) bore across 5 bearing types, outside diameters from 52 to 110 mm. Tables are grouped by type; open a model for full specs and equivalents.

39 models 52–110 mm OD range 3 brands

Angular Contact Ball Bearings (6)

Model Series d (mm) D (mm) B (mm) Brand Seal Clearance C (kN)
71808 71800 40 52 7 GENERIC-ISO open CN —
71908 71900 40 62 12 GENERIC-ISO open CN —
7008 7000 40 68 15 GENERIC-ISO open CN —
7208 7200 40 80 18 GENERIC-ISO open CN —
7308 7300 40 90 23 GENERIC-ISO open CN —
7408 7400 40 110 27 GENERIC-ISO open CN —

Cylindrical Roller Bearings (4)

Model Series d (mm) D (mm) B (mm) Brand Seal Clearance C (kN)
NU208 NU200 40 80 18 GENERIC-ISO open CN —
NU2208 NU2200 40 80 23 GENERIC-ISO open CN —
NU308 NU300 40 90 23 GENERIC-ISO open CN —
NU2308 NU2300 40 90 33 GENERIC-ISO open CN —

Deep Groove Ball Bearings (23)

Model Series d (mm) D (mm) B (mm) Brand Seal Clearance C (kN)
61808 61800 40 52 7 SKF open CN 4.49
61808-2RS 61800 40 52 7 SKF 2RS CN 4.49
61808-RSR 61800 40 52 7 SKF RSR CN 4.49
61808-ZZ 61800 40 52 7 NSK ZZ CN 7
61908 61900 40 62 12 SKF open CN 13.8
61908-2RS 61900 40 62 12 SKF 2RS CN 13.8
61908-RSR 61900 40 62 12 SKF RSR CN 13.8
61908-ZZ 61900 40 62 12 NSK ZZ CN 15
6008 6000 40 68 15 SKF open CN 17.8
6008-2RS 6000 40 68 15 SKF 2RS CN 17.8
6008-RSR 6000 40 68 15 SKF RSR CN 17.8
6008-ZZ 6000 40 68 15 SKF ZZ CN 17.8
6208 6200 40 80 18 SKF open CN 32.5
6208-2RS 6200 40 80 18 SKF 2RS CN 32.5
6208-RSR 6200 40 80 18 SKF RSR CN 32.5
6208-ZZ 6200 40 80 18 SKF ZZ CN 32.5
6308 6300 40 90 23 SKF open CN 42.3
6308-2RS 6300 40 90 23 SKF 2RS CN 42.3
6308-RSR 6300 40 90 23 SKF RSR CN 42.3
6308-ZZ 6300 40 90 23 SKF ZZ CN 42.3
6408 6400 40 110 27 SKF open CN 63.7
6408-2RS 6400 40 110 27 GENERIC-ISO 2RS CN —
6408-ZZ 6400 40 110 27 GENERIC-ISO ZZ CN —

Spherical Roller Bearings (2)

Model Series d (mm) D (mm) B (mm) Brand Seal Clearance C (kN)
22208 22200 40 80 23 GENERIC-ISO open CN —
22308 22300 40 90 33 GENERIC-ISO open CN —

Tapered Roller Bearings (4)

Model Series d (mm) D (mm) B (mm) Brand Seal Clearance C (kN)
32008 32000 40 68 19 GENERIC-ISO open CN —
30208 30200 40 80 19.75 GENERIC-ISO open CN —
32208 32200 40 80 24.75 GENERIC-ISO open CN —
32308 32300 40 90 35.25 GENERIC-ISO open CN —

Exact-dimension interchange groups at 40 mm bore

These d×D×B envelopes at a 40 mm bore are shared by several series or brands — the starting point for a dimensional cross reference:

Selecting a 40 mm bore bearing

The bore fixes the shaft, not the bearing capacity. At 40 mm the catalog spans 52–110 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 40 mm bore?

This index lists 39 verified bearing models with a 40 mm (1.575 in) bore across 5 bearing types, from 52 to 110 mm outside diameter. Open any model for the full specification table, seal/clearance options and graded cross references.

How do I choose between the 52–110 mm OD options for a 40 mm shaft?

On a fixed 40 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 40 mm bearings?

A 40 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 40 mm is bore code 08 (code × 5), so a 62-series bearing with this bore is the 6208.