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ISO 1328-1 2nd Edition, September 1, 2013 Cylindrical Gears - ISO System of Accuracy - Part 1: Definitions and Allowable Values of Deviations Relevant to Corresponding Flanks of Gear Teeth
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Availability date: 07/13/2021
Description / Abstract:
This part of ISO 1328 establishes a tolerance classification
system relevant to manufacturing and conformity assessment of tooth
flanks of individual cylindrical involute gears. It specifies
definitions for gear flank tolerance terms, the structure of the
flank tolerance class system, and allowable values.
This part of ISO 1328 provides the gear manufacturer and the
gear buyer with a mutually advantageous reference for uniform
tolerances. Eleven flank tolerance classes are defined, numbered 1
to 11, in order of increasing tolerance. Formulae for tolerances
are provided in 5.3. These tolerances are applicable to the
following ranges:
5 ≤ z ≤ 1 000
5 mm ≤ d ≤ 15 000 mm
0,5 mm ≤ mn ≤ 70 mm
4 mm ≤ b ≤ 1 200 mm
β ≤ 45°
where
d is the reference diameter;
mn is the normal module;
b is the facewidth (axial);
z is the number of teeth;
β is the helix angle.
See Clause 4 for required and optional measuring methods
Gear design is beyond the scope of this part of ISO 1328.
Surface texture is not considered in this part of ISO 1328. For
additional information on surface texture, see ISO/TR 10064-4.