ISO Bearing
Most rolling bearings follow ISO standard dimensions, which is a prerequisite to enable interchangeability. The ISO general plan for radial bearings provides several series of standardized outside diameters for every standard bore diameter. They are called diameter series and are numbered 7, 8, 9, 0, 1, 2, 3 and 4 (in order of increasing outside diameter). Within each diameter series, different width series exist (width series 8, 0, 1, 2, 3, 4, 5 and 6 in order of increasing width).shows diameter series 0, 2 and 3 combined with width series 0, 1, 2 and 3. For thrust bearings, height series are used instead of width series. Height series are numbered 7, 9, 1 and 2. Bearings to ISO general plans have the same boundary dimensions when they share the same bore diameter and dimension series. If not, they have different boundary dimensions.
The boundary dimensions for metric bearings are standardized in the ISO2) general plans:ISO 15 for radial rolling bearings, except insert bearings, some types of needle roller bearings and tapered roller bearings,ISO 104 for thrust bearings,ISO 355 for tapered roller bearings.

- ISO NNU4926K V cylindrical roller bearings
- 12 mm
- 0,3 mm

- ISO NUP3216 cylindrical roller bearings
- 013992026620
- 1.5 - 6 UNC

- ISO 395/394A tapered roller bearings
- 013992026620
- 1.5 - 6 UNC

- ISO 234738 thrust ball bearings
- 170
- 110

- ISO 21307W33 spherical roller bearings
- Insert Bearing Unit
- No Cover

- ISO NUP1928 cylindrical roller bearings
- Insert Bearing Unit
- No Cover

- ISO MR117ZZ deep groove ball bearings
- 320x580x190
- 190 mm

- ISO NP29/630 cylindrical roller bearings
- 5960 lbf
- Stamped Steel

- ISO NF420 cylindrical roller bearings
- 013992026620
- 1.5 - 6 UNC

- ISO UCFL310 bearing units
- 5960 lbf
- Stamped Steel