WOODRUFF KEY SIZES AND DIMENSIONS


Woodruff key sizes, dimensions and tolerances are given in the following chart according to ASME B17.2 standard.

Woodruff key is almost in semicircular disk shape with uniform thickness and it's a demountable machinery part that provides means for transmitting torque between the shaft and hub.

Woodruff Key Sizes, Dimensions and Tolerances:

INPUT PARAMETERS
Key Number

 


Dimensions of Woodruff Keys
RESULTS
Parameter Value
Key No1 --- ---
Nominal Key Size [W x B] --- inch
Actual Length [F]2 ---
Maximum Key Height [Cmax] ---
Minimum Key Height [Cmin] ---
Maximum Key Height [Dmax] ---
Minimum Key Height [Dmin] ---
Distance below Center [E] ---

Note 1 : The last two digits of the key number give the nominal diameter B in eighths of an inch and the digits preceding the last two give the nominal width W in thirty-seconds of an inch. Ex: No. 1212 indicates a key 12/32 x 12/8 or 3/8 x 1-1/2

Note 2 : Length tolerance : +0.000  -0.010 .


Reference:

  • Oberg, E. , Jones ,F.D. , Horton H.L. , Ryffel H.H., (2016) . Machinery's Handbook . 30th edition.  Industrial Press Inc.
  • Oberg, E. , Jones ,F.D. , Horton H.L. , Ryffel H.H., (2012) . Machinery's Handbook . 29th edition.  Industrial Press Inc.
  • ASME B17.2-1967, Woodruff Keys and Keyseats