Control Values for Keys

The Control Values for Keys calculator solves for the key depths of a given shaft and the key size.

To calculate the control values:

1.	Select Machine Design > Control Values for Keys.

The Depth Control Values for Keys dialog box opens.

2.	Select Recommended Key Size to use the recommended key size according to the ASME or ISO standard; otherwise, select Custom Key Size to enter custom key sizes.

 

Parameter	Description
Nom. Shaft Diameter (D)	Enter the size of the shaft
Recommended Key Size	Select to use the recommended key size according to the ASME or ISO standard
Square	Select to use the recommended square key
Rectangular	Select to use the recommended rectangular key
Key Width (W)/Height (H)	Displays the dimensions of the recommended key
Custom Key Size	Select to use custom key sizes
Key Width (W)	Enter the width of the key
Key Height (H)	Enter the height of the key
Solution
Depth to Bottom of Key (S)	Displays the dimension from the bottom of the shaft to the bottom of the key
Depth to Top of Key (T)	Displays the dimension from the bottom of the shaft to the top of the key
Place data on drawing	Select to insert the calculated data on the drawing

3.	Click Solve.

The key depth values for the given shaft diameter and key size are displayed.

4.	Click Close to exit the calculator.