What is BS 2697 – rack type gear cutter dimensions about? 
BS 2697 is a British Standard that specifies certain dimensions and accuracy requirements for non-topping finishing rack type gear cutters in the range 1–40 metric module inclusive, which are used in gear planing machines intended for the generation of spur and single helical gears having an in-volute form.
Note: BS 2697 does not relate to cutters for double helical gears.
Who is BS 2697 – rack type gear cutter dimensions for?
BS 2697 on ‘rack type gear cutter dimensions’ is useful for: 
- Manufacturers and suppliers of gear cutters
- Users of gear cutters
- Product design engineers / innovation teams
- Mechanical engineers
- Quality control / testing personnel
Why should you use BS 2697 – rack type gear cutter dimensions?
BS 2697 discusses cutters that are intended for use in the production of metric module gears with a 20° pressure angle and which comply with the requirements of ISO 53 and ISO/R54 and BS 436-2. BS 2697 includes two additional modules.
BS 2697 specifies two grades of tolerance for cutters, grade A and grade B. One accuracy test also relates to back plates.
The following types of cutters are covered by BS 2697:
- Rectangular mounted cutters
- Inclined mounted cutters
- Inclined mounted parallelogram cutters
Details of information to be marked on cutters and information which is recommended to be given when ordering cutters are also included in BS 2697.
BS 2697 guidelines help you to follow best practices when designing and manufacturing rack type gear cutters.
