E.H. Wachs EP 424, User Manual

Page: 79 / 130

Chapter 5, Operating Instructions: Single Point Operation
E.H. Wachs Part No. 81-MAN-00, Rev. C 73
SINGLE-ANGLE BEVEL EXAMPLE:
R = 0.125”
L = 0.100”
E = 0.125”
A = 20°
W = 0.800”
S = 0.125” + 0.125” + [tan(20°) x (0.800” - 0.100” - 0.125”]
= 0.250” + [0.364 x 0.575”]
= 0.459”
For a compound bevel, use the following formula:
L
R
R
E
A1
W
S = Set-Back
R = Root Radius
L = Land
E = Land Extension
A1 = Inner Bevel Angle
A2 = Outer Bevel Angle
T = Transition (from I.D.)
W = Wall Thickness (After Counterbore)
S = R + E + [tan(A2) x (W - T)] + [tan(A1) x (T - L - R)]
A2
S
T
Figure 5-61. The diagram illustrates how to compute the O.D. set-back when performing a
compound bevel.