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RS-121
Display Units: inches |  metric
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Ring Specs
(D) Free Diameter: 1.159 +0.000 / -0.015 in.
(t) Thickness: 0.043 +0.002 / -0.002 in.
(b) Radial Wall: 0.085 +0.003 / -0.005 in.
Groove Specs:
(B) Application Diameter: 1.218 in.
(G) Groove Diameter: 1.170 +0.004 / -0.004 in.
(W) Groove Width: 0.048 +0.004 / -0.000 in.
Groove Depth: 0.024 in.
Other Specs
Approximate Weight per 1000:
(m) Material Thickness:0.021in.
(N) Ring Number of Turns:2.000
(Pg) Theoretical Thrust Load Capacity - Groove Yield:
Notes: Yield Strength of Groove Material (Ys): 45,000 psi. Calculated using a safety factor (K) of 2

Equation:
Pg = [ B * d * Ys * pi ] / K
    = [ (1.218 in.) * (0.024 in.) * (45,000 psi) * 3.14 ] / 2		2,065lbs.
(Pr) Theoretical Thrust Load Capacity - Ring Shear:
Notes: Ring Material: Carbon Spring Steel (SAE 1070-1090). Shear Strength of Ring Material (Ss): 138,000 psi. Calculated using a safety factor (K) of 3

Equation:
Pr = [ B * t * Ss * pi ] / K
    = [ (1.218 in.) * (0.043 in.) * (138,000 psi) * 3.14 ] / 3		7,564lbs.
Industry Equivalent Part Number(s):
RS-121, CM-121, WS-121