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
10 mm x 26 mm x 8 mm ISO 7000 C ISO Bearing 19000 19153X 19262 Imperial
20 mm x 72 mm x 19 mm ISO 6404 ISO Bearing 395 399AX 394DC Imperial
17 mm x 44 mm x 11 mm ISO E17 ISO Bearing LM48500 LM48548 LM48510 Imperial
ISO K14x18x10 ISO Bearing LL529749 Imperial Stamped Steel 44300 lbf
ISO K25x33x24 ISO Bearing 14000 14130 14299 Imperial
100 mm x 165 mm x 52 mm ISO 23120 KCW33+AH3120 ISO Bearing 81000 81964 Imperial 9.6457 in
280 mm x 580 mm x 108 mm ISO NUP356 ISO Bearing 18700 18790 18720 Imperial
65 mm x 140 mm x 33 mm ISO 30313 ISO Bearing 13600 13682 13621 Imperial
ISO 54220U+U220 ISO Bearing 16000 16137 16283 Imperial
17,462 mm x 39,878 mm x 14,605 mm ISO LM11749/10 ISO Bearing 6400 6459 Imperial Stamped Steel
40 mm x 90 mm x 23 mm ISO 30308 ISO Bearing 13600 13687 13620 Imperial
200 mm x 310 mm x 51 mm ISO 7040 B ISO Bearing 13600 13685A 13621A Imperial
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