1. Scope

1.1

This Standard establishes a uniform relationship between shaft size and key size for parallel and taper keys.

1.2

This Standard covers the size, type and tolerances of paralle l and taper keys, and their relationship to shaft diameters and bore diameters. The size and tolerances contained in this Standard are intended for single key application only, except tangential keys.

1.3

Keys and keyways for electric motors and generators are defined in CEMA Standard MG-1, Motors and Generators.

1.4

Key strength and steel analysis entering into the makeup of stock for keys is not within the scope of this Standard.

1.5

Shaft diameters are listed for identification of various key sizes and are not intended to establish shaft dimensions, tolerances, or selection.