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
200 mm x 310 mm x 109 mm ISO 24040 K30CW33+AH24040 ISO Bearing 455 457 452D Imperial
6,35 mm x 9,525 mm x 3,175 mm ISO FR168B ISO Bearing 28000 28156 28317 Imperial
360 mm x 540 mm x 134 mm ISO NU3072 ISO Bearing 90 mm Felt Type Split Cylindrical Expansion Type Two-Bolt Plummer Block
35 mm x 80 mm x 21 mm ISO N307 ISO Bearing 13600 13687 13624 Imperial
ISO 51326 ISO Bearing 28000 28156 28300 Imperial
66,675 mm x 127 mm x 36,512 mm ISO HM813844/10 ISO Bearing 28000 28155 28300 Imperial
300 mm x 460 mm x 95 mm ISO NJ2060 ISO Bearing 13600 13685A 13621 Imperial
ISO K32x36x15 ISO Bearing 28000 28150 28315 Imperial
35 mm x 62 mm x 36 mm ISO SL045007 ISO Bearing 28000 28158 28300 Imperial
100 mm x 215 mm x 47 mm ISO NU320 ISO Bearing LM48500 LM48548C LM48514 Imperial
95 mm x 170 mm x 32 mm ISO 7219 C ISO Bearing 4 in High Temperature Packing Split Cylindrical Expansion Type Two-Bolt Plummer Block
ISO 54409U+U409 ISO Bearing 125000 EE125095 Imperial Stamped Steel
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