What is BS 4235-2 - Woodruff metric keys and keyways specification about?

Woodruff’s key is the elimination of milling near shaft shoulders, where stress concentrations and concentricity would be affected. BS 4235-2 is an International Standard that discusses specifications for metric keys and keyways.

BS 4235-2 is the second part of the multi-series and specifies the dimensional characteristics of Woodruff keys and of the alternative Whitney key and of the corresponding keyways in the shaft and hub.

Who is BS 4235-2 - Woodruff metric keys and keyways specification for?

BS 4235-2 on woodruff metric keys and keyways specification is useful for:

Manufacturers and suppliers of woodruff keys
Product designers
Quality control personnel
The automobile industry
The manufacturing industry
Agencies involved in woodruff keys

Why should you use BS 4235-2 - Woodruff metric keys and keyways specification? 

A woodruff key, also known as a half‑moon key, is a semi-circular machine shaft key that prevents gears, hubs, or other components from moving independently of a rotating shaft or spindle.

BS 4235-2 also provides details such as the relationship to be observed between the diameter of the shaft and the section of the key for both torque transmission and positional applications.

BS 4235-2 walks you through the field of application, material, guidance on the shape, dimensions, tolerances of keyways, and also designation guidelines to better utilize the guidance of metric keys and keyways.

BS 4235-2 is intended for general application to cylindrical shafts and cylindrical shaft ends. BS 4235-2 is useful in reducing stress concentrations at the shaft end by eliminating machining at shaft shoulders. BS 4235-2 guidelines help you to manufacture high-quality woodruff keys. This facilitates smooth manufacturing processes for users.

BS 4235-2:1977

Specification for metric keys and keyways - Woodruff keys and keyways

Current, Under Review

Published:

31 Oct 1977