ISO – Tolerator

Version 4.0

In order to ensure the functional reliability of plain bearing bushes, it is particularly important that the installation bearing clearance and thus also the operating bearing clearance is correctly dimensioned. The tolerances of shaft and housing have a great influence on this clearance. Usually these tolerances are determined according to the tolerance system according to ISO. With the help of the ISO Tolerator, the ISO tolerance specification (nominal dimension, position, quality, e.g. 22 H7) can be determined (“translated”) into the upper dimension, lower dimension, maximum dimension and the minimum dimension. This tool was tested in the nominal dimension range for shafts and housing bores from 1mm to 500mm.

The calculations comply with the following standards:
Germany DIN 7160/61, Switzerland VSM 58401/02, USA SB41, Austria 621.753.2, Spain UNE5023, Italy UNI6388, ISO R 283, England BS 4500, France PNE 2105-118, Belgium NBN 138, Sweden SMS 2101-58, Portugal NP190, Holland NEN 2800, Japan JIS B0401