Keyways

The following chart defines the tolerances that Excalibur bars are produced to with respect to keyway size and tolerance.

Shaft diameter

Nominal key size

Keyseat width tolerance

Over to (and including) Square

Tolerance

7/16 9/16 1/8

+.002" -.000"

9/16 7/8 3/16

+.002" -.000"

7/8 1 1/4 1/4

+.002" -.000"

1 1/4 1 3/8 5/16

+.002" -.000"

1 3/8 1 3/4 3/8

+.002" -.000"

1 3/4 2 1/4 1/2

+.003" -.000"

2 1/4

2 3/4 5/8

+.003" -.000"

Per ANSI B17.1-1967, R1973