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440 mm bore bearings

32 models with a 440 mm (17.323 in) bore across 5 bearing types, outside diameters from 540 to 790 mm. Tables are grouped by type; open a model for full specs and equivalents.

32 models 540–790 mm OD range 2 brands

CARB Toroidal Roller Bearings (6)

Model Series d (mm) D (mm) B (mm) Brand Seal Clearance C (kN)
C3088-KMB C3000 440 650 157 SKF open CN 3750
C3088-MB C3000 440 650 157 SKF open CN 3750
C3188-KMB C3100 440 720 226 SKF open CN 6700
C3188-MB C3100 440 720 226 SKF open CN 6700
C4188-K30MB C4100 440 720 280 SKF open CN 7500
C4188-MB C4100 440 720 280 SKF open CN 7500

Cylindrical Roller Bearings (8)

Model Series d (mm) D (mm) B (mm) Brand Seal Clearance C (kN)
NCF1888-V NCF1800 440 540 46 SKF open CN 671
NCF2888-V NCF2800 440 540 60 SKF open CN 1060
NU1988-MA NU1900 440 600 74 SKF open CN 1060
NCF2988-V NCF2900 440 600 95 SKF open CN 2010
NJ2988-ECML NJ2900 440 600 95 SKF open CN 1870
NU2988-ECML NU2900 440 600 95 SKF open CN 1870
NU2088-ECMA NU2000 440 650 122 SKF open CN 2550
NU3188-ECMA-HB1 NU3100 440 720 226 SKF open CN 5120

Deep Groove Ball Bearings (5)

Model Series d (mm) D (mm) B (mm) Brand Seal Clearance C (kN)
61888 61800 440 540 46 NTN open CN 292
61888-MA 61800 440 540 46 SKF open CN 255
61988 61900 440 600 74 NTN open CN 405
61988-MA 61900 440 600 74 SKF open CN 410
6088-M 6000 440 650 94 SKF open CN 553

Spherical Roller Bearings (10)

Model Series d (mm) D (mm) B (mm) Brand Seal Clearance C (kN)
23988 23900 440 600 118 SKF open CN 2506
23988-CCK-W33 23900 440 600 118 SKF open CN 2506
24088 24000 440 650 212 SKF open CN 4987
24088-ECAK30-W33 24000 440 650 212 SKF open CN 4987
23188 23100 440 720 226 SKF open CN 6215
23188-CAK-W33 23100 440 720 226 SKF open CN 6215
24188 24100 440 720 280 SKF open CN 7777
24188-ECAK30-W33 24100 440 720 280 SKF open CN 7777
23288 23200 440 790 280 SKF open CN 8150
23288-CAK-W33 23200 440 790 280 SKF open CN 8150

Spherical Roller Thrust Bearings (3)

Model Series d (mm) D (mm) B (mm) Brand Seal Clearance C (kN)
29288 29200 440 600 95 SKF open CN 2070
29388-EM 29300 440 680 145 SKF open CN 5200
29488-EM 29400 440 780 206 SKF open CN 9000

Exact-dimension interchange groups at 440 mm bore

These d×D×B envelopes at a 440 mm bore are shared by several series or brands — the starting point for a dimensional cross reference:

Selecting a 440 mm bore bearing

The bore fixes the shaft, not the bearing capacity. At 440 mm the catalog spans 540–790 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 440 mm bore?

This index lists 32 verified bearing models with a 440 mm (17.323 in) bore across 5 bearing types, from 540 to 790 mm outside diameter. Open any model for the full specification table, seal/clearance options and graded cross references.

How do I choose between the 540–790 mm OD options for a 440 mm shaft?

On a fixed 440 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 440 mm bearings?

A 440 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 440 mm is bore code 88 (code × 5), so a 62-series bearing with this bore is the 6288.