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73.025 mm bore bearings

9 models with a 73.025 mm (2.875 in) bore across 1 bearing type, outside diameters from 112.712 to 150.089 mm. Tables are grouped by type; open a model for full specs and equivalents.

9 models 112.712–150.089 mm OD range 2 brands

Tapered Roller Bearings (9)

Model Series d (mm) D (mm) B (mm) Brand Seal Clearance C (kN)
29685-29620 29600 73.025 112.712 25.4 SKF open CN 121
29685-29620-NTN 4t-inch 73.025 112.712 25.4 NTN open CN 106
33287-33462 33000 73.025 117.475 30.162 SKF open CN 152
33287-33462-NTN 4t-inch 73.025 117.475 30.162 NTN open CN 129
567-563 565 73.025 127 36.512 SKF open CN 217
567-563-NTN 4t-inch 73.025 127 36.512 NTN open CN 181
576-572 4t-inch 73.025 139.992 36.512 NTN open CN 197
6460-6420 4t-inch 73.025 149.225 53.975 NTN open CN 320
744-742 4t-inch 73.025 150.089 44.45 NTN open CN 289

Selecting a 73.025 mm bore bearing

The bore fixes the shaft, not the bearing capacity. At 73.025 mm the catalog spans 112.712–150.089 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 73.025 mm bore?

This index lists 9 verified bearing models with a 73.025 mm (2.875 in) bore across 1 bearing type, from 112.712 to 150.089 mm outside diameter. Open any model for the full specification table, seal/clearance options and graded cross references.

How do I choose between the 112.712–150.089 mm OD options for a 73.025 mm shaft?

On a fixed 73.025 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 73.025 mm bearings?

A 73.025 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). Bore diameters below 20 mm follow the 10/12/15/17 mm exception table rather than code × 5.