ISO bearings
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 HM746646/10 tapered roller bearings](https://m.gdet.net.cn/uploaded_images/d7385-iso-hm746646-10-tapered-roller-bearings.jpg)
- ISO HM746646/10 tapered roller bearings
- NN4921
- 105x134x40
![ISO 239/1120 KW33 spherical roller bearings](https://m.gdet.net.cn/uploaded_images/d7389-iso-239-1120-kw33-spherical-roller-bearings.jpg)
- ISO 239/1120 KW33 spherical roller bearings
- 6801ZZE
- 12x21x5
![ISO UCPX09 bearing units](https://m.gdet.net.cn/uploaded_images/d7389-iso-ucpx09-bearing-units.jpg)
- ISO UCPX09 bearing units
- 6708
- 40x50x6
![ISO NNCF5007 V cylindrical roller bearings](https://m.gdet.net.cn/uploaded_images/d7387-iso-nncf5007-v-cylindrical-roller-bearings.jpg)
- ISO NNCF5007 V cylindrical roller bearings
- 6704
- 20x27x4
![ISO 71914 CDB angular contact ball bearings](https://m.gdet.net.cn/uploaded_images/d7390-iso-71914-cdb-angular-contact-ball-bearings.jpg)
- ISO 71914 CDB angular contact ball bearings
- NK 24/20
- 32x24x20
![ISO 39585/39520 tapered roller bearings](https://m.gdet.net.cn/uploaded_images/d7386-iso-39585-39520-tapered-roller-bearings.jpg)
- ISO 39585/39520 tapered roller bearings
- 6804NR
- 20x32x7
![ISO NU19/710 cylindrical roller bearings](https://m.gdet.net.cn/uploaded_images/d7391-iso-nu19-710-cylindrical-roller-bearings.jpg)
- ISO NU19/710 cylindrical roller bearings
- 6800-2RS
- 10x19x5
![ISO AXK 6085 needle roller bearings](https://m.gdet.net.cn/uploaded_images/d7389-iso-axk-6085-needle-roller-bearings.jpg)
- ISO AXK 6085 needle roller bearings
- 6802LLU
- 15x24x5
![ISO 23932W33 spherical roller bearings](https://m.gdet.net.cn/uploaded_images/d7390-iso-23932w33-spherical-roller-bearings.jpg)
- ISO 23932W33 spherical roller bearings
- 6801-2RS
- 12x21x5
![ISO NU3228 cylindrical roller bearings](https://m.gdet.net.cn/uploaded_images/d7389-iso-nu3228-cylindrical-roller-bearings.jpg)
- ISO NU3228 cylindrical roller bearings
- 6807ZZNR
- 35x47x7
![ISO 20218 K spherical roller bearings](https://m.gdet.net.cn/uploaded_images/d7390-iso-20218-k-spherical-roller-bearings.jpg)
- ISO 20218 K spherical roller bearings
- D/W R166-2Z
- 4.762x9.525x3.175
![ISO 24148W33 spherical roller bearings](https://m.gdet.net.cn/uploaded_images/d7382-iso-24148w33-spherical-roller-bearings.jpg)
- ISO 24148W33 spherical roller bearings
- 6409 ZZ
- 45x120x29