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670 mm bore bearings

13 models with a 670 mm (26.378 in) bore across 4 bearing types, outside diameters from 820 to 1150 mm. Tables are grouped by type; open a model for full specs and equivalents.

13 models 820–1150 mm OD range 1 brand

CARB Toroidal Roller Bearings (6)

Model Series d (mm) D (mm) B (mm) Brand Seal Clearance C (kN)
C30-670-KM C3000 670 980 230 SKF open CN 8150
C30-670-M C3000 670 980 230 SKF open CN 8150
C31-670-KMB C3100 670 1090 336 SKF open CN 11800
C31-670-MB C3100 670 1090 336 SKF open CN 11800
C41-670-K30MB C4100 670 1090 412 SKF open CN 16000
C41-670-MB C4100 670 1090 412 SKF open CN 16000

Cylindrical Roller Bearings (3)

Model Series d (mm) D (mm) B (mm) Brand Seal Clearance C (kN)
NCF18-670-V NCF1800 670 820 69 SKF open CN 1300
NCF28-670-V NCF2800 670 820 88 SKF open CN 1940
NCF29-670-V NCF2900 670 900 136 SKF open CN 3910

Deep Groove Ball Bearings (3)

Model Series d (mm) D (mm) B (mm) Brand Seal Clearance C (kN)
618-670-MA 61800 670 820 69 SKF open CN 442
619-670-MA 61900 670 900 103 SKF open CN 676
60-670-N1MAS 6000 670 980 136 SKF open CN 904

Spherical Roller Thrust Bearings (1)

Model Series d (mm) D (mm) B (mm) Brand Seal Clearance C (kN)
294-670-EM 29400 670 1150 290 SKF open CN 15400

Selecting a 670 mm bore bearing

The bore fixes the shaft, not the bearing capacity. At 670 mm the catalog spans 820–1150 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 670 mm bore?

This index lists 13 verified bearing models with a 670 mm (26.378 in) bore across 4 bearing types, from 820 to 1150 mm outside diameter. Open any model for the full specification table, seal/clearance options and graded cross references.

How do I choose between the 820–1150 mm OD options for a 670 mm shaft?

On a fixed 670 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 670 mm bearings?

A 670 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 670 mm is bore code 134 (code × 5), so a 62-series bearing with this bore is the 62134.