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