MPNbase

180 mm bore bearings

11 models with a 180 mm (7.087 in) bore across 2 bearing types, outside diameters from 225 to 380 mm. Tables are grouped by type; open a model for full specs and equivalents.

11 models 225–380 mm OD range 3 brands

Deep Groove Ball Bearings (10)

Model Series d (mm) D (mm) B (mm) Brand Seal Clearance C (kN)
61836 61800 180 225 22 SKF open CN 62.4
61836-RSR 61800 180 225 22 NSK RSR CN 66.5
61936 61900 180 250 33 SKF open CN 119
61936-ZZ 61900 180 250 33 NSK ZZ CN 131
6036 6000 180 280 46 SKF open CN 190
6036-RSR 6000 180 280 46 NSK RSR CN 198
6036-ZZ 6000 180 280 46 NSK ZZ CN 198
6236 6200 180 320 52 SKF open CN 229
6236-ZZ 6200 180 320 52 NSK ZZ CN 250
6336 6300 180 380 75 SKF open CN 351

Spherical Roller Bearings (1)

Model Series d (mm) D (mm) B (mm) Brand Seal Clearance C (kN)
23036 23000 180 280 74 GENERIC-ISO open CN —

Exact-dimension interchange groups at 180 mm bore

These d×D×B envelopes at a 180 mm bore are shared by several series or brands — the starting point for a dimensional cross reference:

Selecting a 180 mm bore bearing

The bore fixes the shaft, not the bearing capacity. At 180 mm the catalog spans 225–380 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 180 mm bore?

This index lists 11 verified bearing models with a 180 mm (7.087 in) bore across 2 bearing types, from 225 to 380 mm outside diameter. Open any model for the full specification table, seal/clearance options and graded cross references.

How do I choose between the 225–380 mm OD options for a 180 mm shaft?

On a fixed 180 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 180 mm bearings?

A 180 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 180 mm is bore code 36 (code × 5), so a 62-series bearing with this bore is the 6236.