Overview
ISO/TR 10064-2:1996 - "Cylindrical gears - Code of inspection practice - Part 2" is a Technical Report that gives practical guidance on gear inspection methods and on analysing measurement results for radial composite deviations, runout, tooth thickness and backlash. It supplements ISO 1328-2 and focuses on measurements referred to double-flank (radial composite) contact of involute cylindrical gears. The report is a Type 3 ISO Technical Report (state-of-the-art data and practice).
Key topics and requirements
The Technical Report provides definitions, measurement principles and evaluation advice rather than normative specifications. Major technical topics include:
- Radial composite deviations
- Measurement principle for radial composite (double-flank) tests
- Interpretation and utility of composite deviation data
- Runout and eccentricity
- Principles for measuring runout and determining eccentricity
- Guidance on anvil (prism) size for runout tests and runout evaluation diagrams
- Tooth thickness and span
- Methods for measuring chordal and normal tooth thickness
- Span measurement techniques (including helical gears)
- Measurement by dimension over balls or cylinders (pin measurement)
- Use of radial composite action tests (double-flank) to determine functional tooth thickness
- Backlash and tooth-thickness tolerances
- Annex A: method to select tooth thickness tolerances and minimum/maximum backlash values, with suggested minimum backlash values and measurement specifications
- Symbols, definitions and calculation conventions (lower/upper-case and Greek symbols used in measurements)
- Practical diagrams and examples for measurement set-ups and result interpretation
Practical applications and users
ISO/TR 10064-2 is aimed at professionals who need reliable, repeatable gear inspection methods and analysis:
- Gear designers and engineers specifying inspection requirements
- Quality and metrology engineers in gear manufacturing
- Inspection laboratories and calibration facilities performing double‑flank tests
- OEMs and maintenance teams in automotive, heavy engineering, power transmission and related industries where cylindrical involute gears are used
Practical value:
- Improves consistency in runout, tooth-thickness and backlash assessments
- Helps interpret composite test results to assess functional tooth thickness and gear fit
- Supports selection of tolerances to achieve required gear clearances and contact behavior
Related standards
Keywords: ISO/TR 10064-2:1996, gear inspection, radial composite deviation, runout, tooth thickness, backlash, cylindrical gears, double-flank test, gear measurement.