Specification for worm gearing - Metric units Ingestion-build-109673 boiler drums

boiler drums

This document specifies an open-loop test procedure to examine the effect of braking on course holding and directional behaviour of a vehicle

1 Type of inspection

and tests to demonstrate compliance with these requirements

Specification for worm gearing - Metric units Ingestion-build-109673 boiler drums1 Scope This Part of BS 721 specifies the requirements for worm gearing based on axial modules. Four classes of gear are specified, which are related to function and accuracy. This Part applies to worm gearing comprising cylindrical involute helicoid worms and wormwheels conjugate thereto. It does not apply to pairs of cylindrical gears connecting non parallel axes known as crossed helical gears. Appendix A gives some typical wheel rim sections