Keyway Size Chart
Keyway size is selected from shaft diameter and the applicable key standard. Use the calculator to look up standard key width, height and keyway depths.
keyway size chart keyway chart standard keyway dimensions
What a keyway chart gives
- Key width: the across-width size selected for the shaft range.
- Key height: the standard rectangular or square key height.
- Shaft and hub depth: how far the keyway is cut into each part.
Best workflow
Enter shaft diameter in the keyway calculator instead of guessing from a generic table.
Related check
After keyway sizing, check transmitted torque and shaft stress with shaft torsion tools.
Related pages
- Keyway dimension calculator - standard dimensions by shaft diameter.
- Keyway dimensions by shaft size - query-focused shaft-diameter workflow.
- Shaft torsion calculator - check shaft stress and twist.
- Torque power RPM calculator - convert transmitted power to torque.