ISO Bearing

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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.

Bearing Number Bore Dia Outer DIa Width Size
560 mm x 750 mm x 112 mm ISO NU29/560 ISO Bearing 18700 18780 18724 Imperial
ISO 7313 ADF ISO Bearing 28000 28138 28315 Imperial
300 mm x 460 mm x 118 mm ISO 23060 KCW33+AH3060 ISO Bearing JP13000 JP13049 METRIC Stamped Steel
40 mm x 85,725 mm x 30,162 mm ISO 3879/3820 ISO Bearing 28000 28151 28300 Imperial
200 mm x 280 mm x 80 mm ISO NNU4940 V ISO Bearing 28000 28156 28315 Imperial
2 mm x 7 mm x 3 mm ISO MR72ZZ ISO Bearing LM501300 LM501349 LM501310P Imperial
ISO 3812-2RS ISO Bearing METRIC 1/12 56.500 Kg EMB
120 mm x 165 mm x 27 mm ISO SL182924 ISO Bearing 28000 28159 28300 Imperial
65 mm x 140 mm x 33 mm ISO NU313 ISO Bearing LM501300 LM501349A LM501310P Imperial
440 mm x 600 mm x 160 mm ISO NNU4988K ISO Bearing M229349A Imperial Stamped Steel 131000 lbf
6 mm x 13 mm x 3,5 mm ISO F686 ISO Bearing M38500 M38549 M38512 Imperial
ISO 89309 ISO Bearing 28000 28150 28316 Imperial
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