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Shaft Design Factors: keyway
2.75 to 6
Shaft design reference data — ANSI B17.1 keyway dimensions, ANSI B27.7 retaining ring groove dimensions, and ANSI B92.1 spline stress concentration factors for shaft design per Shigley's and Peterson's
| feature type | shaft dia over in | Kt bending (dimensionless) | Kt torsion (dimensionless) | fillet radius in (in) | hub keyseat depth in (in) | key height in (in) | key width in (in) | shaft dia to in (in) | shaft keyseat depth in (in) | standard |
|---|---|---|---|---|---|---|---|---|---|---|
| keyway | 2.75 | 1.6 | 3 | 0.02 | 0.375 | 0.75 | 0.75 | 3 | 0.375 | ANSI B17.1-1967 (R2013) |
| keyway | 3 | 1.6 | 3 | 0.062 | 0.393 | 0.875 | 0.875 | 3.5 | 0.876 | ANSI B17.1-1967 (R1998) |
| keyway | 3.5 | 1.6 | 3 | 0.062 | 0.448 | 1 | 1 | 4 | 1.001 | ANSI B17.1-1967 (R1998) |
| keyway | 4 | 1.6 | 3 | 0.062 | 0.559 | 1.25 | 1.25 | 4.5 | 1.251 | ANSI B17.1-1967 (R1998) |
| keyway | 4.5 | 1.6 | 3 | 0.062 | 0.664 | 1.5 | 1.5 | 5.5 | 1.501 | ANSI B17.1-1967 (R1998) |
| keyway | 5 | 1.6 | 3 | 0.062 | 0.438 | 0.875 | 1.25 | 5.5 | 0.438 | ANSI B17.1-1967 (R2013) |
| keyway | 5.5 | 1.6 | 3 | 0.125 | 0.77 | 1.75 | 1.75 | 6 | 1.751 | ANSI B17.1-1967 (R1998) |
| keyway | 6 | 1.6 | 3 | 0.125 | 0.625 | 1.25 | 1.75 | 7 | 0.625 | ANSI B17.1-1967 (R2013) |
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