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1000 mm bore bearings

12 models with a 1000 mm (39.370 in) bore across 4 bearing types, outside diameters from 1220 to 1670 mm. Tables are grouped by type; open a model for full specs and equivalents.

12 models 1220–1670 mm OD range 2 brands

CARB Toroidal Roller Bearings (4)

Model Series d (mm) D (mm) B (mm) Brand Seal Clearance C (kN)
C39-1060-KMB-OH39-1060-HE carb-adapter-sleeve 1000 1400 250 SKF open CN 11000
C30-1000-MB C3000 1000 1420 308 SKF open CN 13700
C31-1000-KMB C3100 1000 1580 462 SKF open CN 20400
C31-1000-MB C3100 1000 1580 462 SKF open CN 20400

Deep Groove Ball Bearings (1)

Model Series d (mm) D (mm) B (mm) Brand Seal Clearance C (kN)
618-1000-MA 61800 1000 1220 100 SKF open CN 637

Spherical Roller Bearings (6)

Model Series d (mm) D (mm) B (mm) Brand Seal Clearance C (kN)
239-1000 23900 1000 1320 236 NTN open CN 9550
239-1000K 23900 1000 1320 236 NTN open CN 9550
230-1000B 23000 1000 1420 308 NTN open CN 13800
230-1000BK 23000 1000 1420 308 NTN open CN 13800
240-1000B 24000 1000 1420 412 NTN open CN 17800
240-1000BK30 24000 1000 1420 412 NTN open CN 17800

Spherical Roller Thrust Bearings (1)

Model Series d (mm) D (mm) B (mm) Brand Seal Clearance C (kN)
294-1000-EF 29400 1000 1670 402 SKF open CN 31100

Exact-dimension interchange groups at 1000 mm bore

These d×D×B envelopes at a 1000 mm bore are shared by several series or brands — the starting point for a dimensional cross reference:

Selecting a 1000 mm bore bearing

The bore fixes the shaft, not the bearing capacity. At 1000 mm the catalog spans 1220–1670 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 1000 mm bore?

This index lists 12 verified bearing models with a 1000 mm (39.370 in) bore across 4 bearing types, from 1220 to 1670 mm outside diameter. Open any model for the full specification table, seal/clearance options and graded cross references.

How do I choose between the 1220–1670 mm OD options for a 1000 mm shaft?

On a fixed 1000 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 1000 mm bearings?

A 1000 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 1000 mm is bore code 200 (code × 5), so a 62-series bearing with this bore is the 62200.