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ZSM-120 Retaining Ring Spec Sheet

Part Number: ZSM-120

ZSM Series - Medium Duty Spiral Retaining Ring

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Display Units: inches |  metric
Ring Specs

(D) Free Diameter: 4.547 +0.000 / -0.039 in.
(t) Thickness: 0.072 +0.004 / -0.004 in.
(b) Radial Wall: 0.250 +0.004 / -0.006 in.
Groove Specs:

(B) Application Diameter: 4.724 in.
(G) Groove Diameter: 4.579 +0.012 / -0.000 in.
(W) Groove Width: 0.079 +0.005 / -0.000 in.
Groove Depth: 0.072 in.
Other Specs

Approximate Weight per 1000:
(m) Material Thickness:0.035in.
(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
    = [ (4.724 in.) * (0.072 in.)* (45,000 psi) * 3.14 ] / 2
24,030lbs.
(Pr) Theoretical Thrust Load Capacity - Ring Shear:
Notes: Ring Material1: Carbon Spring Steel (SAE 1070-1090). Shear Strength of Ring Material (Ss): 126,000 psi. Calculated using a safety factor (K) of 3

Equation:
Pr = [ B * t * Ss * pi ] / K
    = [ (4.724 in.) * (0.072 in.) * (126,000 psi) * 3.14 ] / 3

1Calculation assumes Carbon Steel for ring material, but Carbon Steel not necessarily available for all parts or sizes.
44,856lbs.
Industry Equivalent Part Number(s):
ZSM-120