MPNbase

750 mm bore bearings

15 models with a 750 mm (29.528 in) bore across 4 bearing types, outside diameters from 920 to 1280 mm. Tables are grouped by type; open a model for full specs and equivalents.

15 models 920–1280 mm OD range 1 brand

CARB Toroidal Roller Bearings (6)

Model Series d (mm) D (mm) B (mm) Brand Seal Clearance C (kN)
C39-750-KM C3900 750 1000 185 SKF open CN 6100
C39-750-M C3900 750 1000 185 SKF open CN 6100
C30-750-KMB C3000 750 1090 250 SKF open CN 9500
C30-750-MB C3000 750 1090 250 SKF open CN 9500
C31-750-KMB C3100 750 1220 365 SKF open CN 16000
C31-750-MB C3100 750 1220 365 SKF open CN 16000

Cylindrical Roller Bearings (5)

Model Series d (mm) D (mm) B (mm) Brand Seal Clearance C (kN)
NCF18-750-V NCF1800 750 920 78 SKF open CN 1760
NCF28-750-V NCF2800 750 920 100 SKF open CN 2640
NCF29-750-V NCF2900 750 1000 145 SKF open CN 4460
NU10-750-ECMA-HB1 NU1000 750 1090 150 SKF open CN 4730
NU20-750-ECMA NU2000 750 1090 195 SKF open CN 7040

Deep Groove Ball Bearings (3)

Model Series d (mm) D (mm) B (mm) Brand Seal Clearance C (kN)
618-750-MA 61800 750 920 78 SKF open CN 527
619-750-MA 61900 750 1000 112 SKF open CN 761
60-750-MA 6000 750 1090 150 SKF open CN 995

Spherical Roller Thrust Bearings (1)

Model Series d (mm) D (mm) B (mm) Brand Seal Clearance C (kN)
294-750-EF 29400 750 1280 315 SKF open CN 18700

Selecting a 750 mm bore bearing

The bore fixes the shaft, not the bearing capacity. At 750 mm the catalog spans 920–1280 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 750 mm bore?

This index lists 15 verified bearing models with a 750 mm (29.528 in) bore across 4 bearing types, from 920 to 1280 mm outside diameter. Open any model for the full specification table, seal/clearance options and graded cross references.

How do I choose between the 920–1280 mm OD options for a 750 mm shaft?

On a fixed 750 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 750 mm bearings?

A 750 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 750 mm is bore code 150 (code × 5), so a 62-series bearing with this bore is the 62150.