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
ISO 7304 CDB ISO Bearing 13600 13685 13621 Imperial
360 mm x 650 mm x 232 mm ISO 23272W33 ISO Bearing 13600 13682 13621A Imperial
60 mm x 95 mm x 63 mm ISO NNU6012 ISO Bearing 535 542 Imperial Stamped Steel
40 mm x 68 mm x 21 mm ISO NN3008 ISO Bearing 14000 14139X 14272 Imperial
ISO 7332 BDF ISO Bearing 3-7/16 in Viton Single Lip Split Cylindrical Expansion Type Two-Bolt Plummer Block
40 mm x 68 mm x 21 mm ISO NN3008 K ISO Bearing 95000 95512X 95912 Imperial
15 mm x 32 mm x 9 mm ISO 6002 ZZ ISO Bearing 19000 19143 19281 Imperial
ISO NKS37 ISO Bearing 18700 18790 18723 Imperial
ISO K28x33x17 ISO Bearing LM48500 LM48548C LM48510 Imperial
ISO 7052 ADB ISO Bearing 99000 99587 99100W Imperial
234,95 mm x 327,025 mm x 52,388 mm ISO 8575/8520 ISO Bearing L319200 L319249 Imperial Stamped Steel
ISO 7407 ADB ISO Bearing 385 386 384DRB Imperial
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