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76.2 mm bore bearings

22 models with a 76.2 mm (3.000 in) bore across 1 bearing type, outside diameters from 109.538 to 190.5 mm. Tables are grouped by type; open a model for full specs and equivalents.

22 models 109.538–190.5 mm OD range 2 brands

Tapered Roller Bearings (22)

Model Series d (mm) D (mm) B (mm) Brand Seal Clearance C (kN)
L814749-710 L814700 76.2 109.538 19.05 SKF open CN 72.1
L814749-L814710 4t-inch 76.2 109.538 19.05 NTN open CN 70
34300-34478 4t-inch 76.2 121.442 24.608 NTN open CN 101
34301-34478 4t-inch 76.2 121.442 24.608 NTN open CN 101
42687-42620 42600 76.2 127 30.162 SKF open CN 171
42687-42620-NTN 4t-inch 76.2 127 30.162 NTN open CN 150
47678-47620 47600 76.2 133.35 33.338 SKF open CN 202
47678-47620-NTN 4t-inch 76.2 133.35 33.338 NTN open CN 170
HM516442-HM516410 4t-inch 76.2 133.35 39.688 NTN open CN 196
5760-5735 4t-inch 76.2 135.733 44.45 NTN open CN 235
495A-493 4t-inch 76.2 136.525 30.162 NTN open CN 143
575-572 575 76.2 139.992 36.512 SKF open CN 227
575-572-NTN 4t-inch 76.2 139.992 36.512 NTN open CN 197
575S-572 4t-inch 76.2 139.992 36.512 NTN open CN 197
659-653 4t-inch 76.2 146.05 41.275 NTN open CN 228
6461-6420 4t-inch 76.2 149.225 53.975 NTN open CN 320
6461A-6420 4t-inch 76.2 149.225 53.975 NTN open CN 320
748S-742 4t-inch 76.2 150.089 44.45 NTN open CN 289
9285-9220 9200 76.2 161.925 49.212 SKF open CN 318
6576-6535 4t-inch 76.2 161.925 53.975 NTN open CN 340
H917840-H917810 4t-inch 76.2 180.975 53.975 NTN open CN 360
HH221430-HH221410 4t-inch 76.2 190.5 57.15 NTN open CN 490

Exact-dimension interchange groups at 76.2 mm bore

These d×D×B envelopes at a 76.2 mm bore are shared by several series or brands — the starting point for a dimensional cross reference:

Selecting a 76.2 mm bore bearing

The bore fixes the shaft, not the bearing capacity. At 76.2 mm the catalog spans 109.538–190.5 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 76.2 mm bore?

This index lists 22 verified bearing models with a 76.2 mm (3.000 in) bore across 1 bearing type, from 109.538 to 190.5 mm outside diameter. Open any model for the full specification table, seal/clearance options and graded cross references.

How do I choose between the 109.538–190.5 mm OD options for a 76.2 mm shaft?

On a fixed 76.2 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 76.2 mm bearings?

A 76.2 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.