BS ISO 1328-1:2013

Foreword
Introduction
1 Scope
2 Normative references
3 Terms, definitions and symbols
4 Application of the ISO flank tolerance
  classification system
5 Tolerance values
Annex A (normative) - Zone-based tolerance
        evaluation
Annex B (normative) - Evaluation of profile and
        helix deviations using the second order
        analysis method
Annex C (informative) - Profile and helix data
        filtering
Annex D (informative) - Sector pitch deviation
Annex E (normative) - Allowable values of runout
Annex F (informative) - Single flank composite testing
Annex G (informative) - Adjacent pitch difference, f[u]
Bibliography

Defines a tolerance classification system relevant to manufacturing and conformity assessment of tooth flanks of individual cylindrical involute gears.

This part of ISO1328 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 ISO1328 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 ≤ 1000

5mm ≤ d ≤ 15000mm

0,5mm ≤ m_n ≤ 70mm

4mm ≤ b ≤ 1200mm

β ≤ 45°

where

See Clause4 for required and optional measuring methods.

Gear design is beyond the scope of this part of ISO1328.

Surface texture is not considered in this part of ISO1328. For additional information on surface texture, see ISO/TR10064-4.