Machine Keys
Cut to standard key profiles and specific lengths, machine keys are used for aligning and securing components to power transmission shafts and transmitting torque to the components. To help prevent key failure, choose key stock material with the same strength and hardness as the shaft or hub.
Standard
Standard size machine keys usually require little or no cutting and filing before use.
Oversized
-0.03 in Lg Tolerance, 1 1⁄2 in Lg
-0.03 in Lg Tolerance, 1 1⁄4 in Lg
-0.03 in Lg Tolerance, 1 3⁄4 in Lg
-0.03 in Lg Tolerance, 1 in Lg
-0.03 in Lg Tolerance, 1⁄2 in Lg
-0.03 in Lg Tolerance, 2 1⁄2 in Lg
-0.03 in Lg Tolerance, 2 3⁄4 in Lg
-0.03 in Lg Tolerance, 2 in Lg
-0.03 in Lg Tolerance, 3 1⁄2 in Lg
-0.03 in Lg Tolerance, 3 in Lg
-0.03 in Lg Tolerance, 3⁄4 in Lg
Undersized
-0.03 in Lg Tolerance, 1 1⁄2 in Lg
-0.03 in Lg Tolerance, 1 1⁄4 in Lg
-0.03 in Lg Tolerance, 1 3⁄4 in Lg
-0.03 in Lg Tolerance, 1 in Lg
-0.03 in Lg Tolerance, 1⁄2 in Lg
-0.03 in Lg Tolerance, 2 1⁄2 in Lg
-0.03 in Lg Tolerance, 2 1⁄4 in Lg
-0.03 in Lg Tolerance, 2 in Lg
-0.03 in Lg Tolerance, 3 in Lg
-0.03 in Lg Tolerance, 3⁄4 in Lg
-0.2 mm Lg Tolerance, 10 mm Lg
-0.2 mm Lg Tolerance, 12 mm Lg
-0.2 mm Lg Tolerance, 14 mm Lg
-0.2 mm Lg Tolerance, 16 mm Lg
-0.2 mm Lg Tolerance, 18 mm Lg
-0.2 mm Lg Tolerance, 20 mm Lg
-0.2 mm Lg Tolerance, 25 mm Lg
-0.2 mm Lg Tolerance, 8 mm Lg
-0.3 mm Lg Tolerance, 30 mm Lg
-0.3 mm Lg Tolerance, 40 mm Lg
Taper
These keys are tapered along their length to fit tightly into keyways.
1 1⁄2 in Lg, +/-0.015 in Lg Tolerance
Square End Type
1 in Lg, +/-0.015 in Lg Tolerance
Square End Type
2 1⁄2 in Lg, +/-0.015 in Lg Tolerance
Square End Type
2 1⁄2 in Lg, -0.1 in Lg Tolerance
Square End Type
2 in Lg, +/-0.015 in Lg Tolerance
Square End Type
3 1⁄2 in Lg, +/-0.015 in Lg Tolerance
Square End Type
3 in Lg, +/-0.015 in Lg Tolerance
Square End Type
4 1⁄2 in Lg, +/-0.015 in Lg Tolerance
Square End Type
4 in Lg, +/-0.015 in Lg Tolerance
Rectangle End Type
Square End Type
5 1⁄2 in Lg, +/-0.015 in Lg Tolerance
Rectangle End Type
Square End Type
5 in Lg, +/-0.015 in Lg Tolerance
Rectangle End Type
Square End Type
6 in Lg, +/-0.015 in Lg Tolerance
Rectangle End Type
Square End Type
Woodruff
Woodruff machine keys are rounded so they can rock in place to compensate for stress on the shaft.