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UR-975 Retaining Ring Spec Sheet

Part Number: UR-975

UR Series - Light Duty Spiral Retaining Ring

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Display Units: inches  |  metric
Ring Specs

(D) Free Diameter: 256.39 +1.78 / -0.00 mm.
(t) Thickness: 1.93 +0.05 / -0.05 mm.
(b) Radial Wall: 8.76 +0.10 / -0.20 mm.
Groove Specs:

(B) Application Diameter: 247.7 mm.
(G) Groove Diameter: 253.85 +0.20 / -0.20 mm.
(W) Groove Width: 2.08 +0.13 / -0.00 mm.
Groove Depth: 3.10 mm.
Other Specs

Approximate Weight per 1000:
(m) Material Thickness:1.91mm.
(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
    = [ (247.65 mm.) * (3.10 mm.)* (310 MPa) * 3.14 ] / 2
373,801N
(Pr) Theoretical Thrust Load Capacity - Ring Shear:
Notes: Ring Material1: Carbon Spring Steel (SAE 1070-1090). Shear Strength of Ring Material (Ss): 827 MPa. Calculated using a safety factor (K) of 3

Equation:
Pr = [ B * t * Ss * pi ] / K
    = [ (247.65 mm.) * (1.93 mm.) * (827 MPa) * 3.14 ] / 3

1Calculation assumes Carbon Steel for ring material, but Carbon Steel not necessarily available for all parts or sizes.
413,971N
Industry Equivalent Part Number(s):
UR-975