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EN-393
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Ring Specs
(D) Free Diameter: 3.704 +0.000 / -0.093 in.
(t) Thickness: 0.109 +0.002 / -0.002 in.
(b) Radial Wall: 0.281 +0.005 / -0.005 in.
Groove Specs:
(B) Application Diameter: 3.938 in.
(G) Groove Diameter: 3.734 +0.006 / -0.006 in.
(W) Groove Width: 0.120 +0.005 / -0.000 in.
Groove Depth: 0.102 in.
Other Specs
Approximate Weight per 1000:
(GAP) Gap (± 1/16"):0.562in.
(ND) Notch Depth (+.000 / -.030):0.150in.
(NW) Notch Width (Ref.):0.125in.
(Ps) Thrust Load Capacity:17,040lbs.
(Pg) Theoretical Thrust Load Capacity - Groove Yield:
Notes: Yield Strength of Groove Material (Ys): 45,000 psi. Calculated using a safety factor (K) of 4

Equation:
Pg = [ B * d * Ys * pi ] / K
    = [ (3.938 in.) * (0.102 in.) * (45,000 psi) * 3.14 ] / 4		14,189lbs.
(Pr) Theoretical Thrust Load Capacity - Ring Shear:
Notes: Ring Material: Carbon Spring Steel (SAE 1060-1095). Shear Strength of Ring Material (Ss): 153,000 psi. Calculated using a safety factor (K) of 3

Equation:
Pr = [ B * t * Ss * pi ] / K
    = [ (3.938 in.) * (0.109 in.) * (153,000 psi) * 3.14 ] / 3		68,738lbs.
Industry Equivalent Part Number(s):
EN-393