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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 LM451349A/10 tapered roller bearings
RNAO22x30x13
22x30x13
ISO K20x30x30 needle roller bearings
NJ2308
40x90x33
ISO 7332 C angular contact ball bearings
6838-Z
190x240x24
ISO NNU4948K V cylindrical roller bearings
68/600
600x730x60
ISO 7228 BDF angular contact ball bearings
6802
15x24x5
ISO 1755/1729 tapered roller bearings
6800Z
10x19x5
ISO JP10049A/10 tapered roller bearings
62/22-2Z
22x50x14
ISO 7213 CDF angular contact ball bearings
68/750
750x920x78
ISO NF2332 cylindrical roller bearings
6802ZZ
15x24x5
ISO 81188 thrust roller bearings
3700
3779
ISO NUP20/710 cylindrical roller bearings
HC71900-E-T-P4S
10x22x6
ISO HK1414 cylindrical roller bearings
6800ZZ
10x19x5
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