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US-312 Retaining Ring Spec Sheet

Part Number: US-312

US Series - Light Duty Spiral Retaining Ring

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Display Units: inches  |  metric
Ring Specs

(D) Free Diameter: 76.23 +0.00 / -0.76 mm.
(t) Thickness: 0.99 +0.05 / -0.05 mm.
(b) Radial Wall: 4.78 +0.10 / -0.15 mm.
Groove Specs:

(B) Application Diameter: 79.4 mm.
(G) Groove Diameter: 77.04 +0.15 / -0.15 mm.
(W) Groove Width: 1.12 +0.08 / -0.00 mm.
Groove Depth: 1.17 mm.
Other Specs

Approximate Weight per 1000:
(m) Material Thickness:0.97mm.
(N) Ring Number of Turns:1.000
(Pg) Theoretical Thrust Load Capacity - Groove Yield:
Notes: Yield Strength of Groove Material (Ys): 310 MPa. Calculated using a safety factor (K) of 2

Equation:
Pg = [ B * d * Ys * pi ] / K
    = [ (79.38 mm.) * (1.17 mm.)* (310 MPa) * 3.14 ] / 2
45,169N
(Pr) Theoretical Thrust Load Capacity - Ring Shear:
Notes: Ring Material1: Carbon Spring Steel (SAE 1070-1090). Shear Strength of Ring Material (Ss): 869 MPa. Calculated using a safety factor (K) of 3

Equation:
Pr = [ B * t * Ss * pi ] / K
    = [ (79.38 mm.) * (0.99 mm.) * (869 MPa) * 3.14 ] / 3

1Calculation assumes Carbon Steel for ring material, but Carbon Steel not necessarily available for all parts or sizes.
71,488N
Industry Equivalent Part Number(s):
US-312