american ring true manufacturing solutions

DIN472-078 Retaining Ring Spec Sheet

Part Number: DIN472-078

DIN472 Series - Metric Int. Ring With Lugs

View as a PDF


Display Units: inches  |  metric
Ring Specs

(D) Free Diameter: 82.50 +1.30 / -0.53 mm.
(t) Thickness: 2.49 +0.00 / -0.08 mm.
(b) Radial Wall:
Groove Specs:

(B) Application Diameter: 78.0 mm.
(G) Groove Diameter: 81.00 +0.36 / -0.00 mm.
(W) Groove Width: 2.64 +0.15 / -0.00 mm.
Groove Depth: 1.50 mm.
Other Specs

Approximate Weight per 1000: 22.413 kg.
(C) Clearance Diameter When Sprung Into Bore:59.99mm.
(C1) Clearance Diameter When Sprung Into Groove:64.01mm.
(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 = [ Cf * B * d * Ys * pi ] / K
    = [ (1.2) * (78.00 mm.) * (1.50 mm.) * (310 MPa) * 3.14 ] / 2
68,326N
(Pr) Theoretical Thrust Load Capacity - Ring Shear:
Notes: Ring Material1: Carbon Spring Steel (SAE 1060-1090). Shear Strength of Ring Material (Ss): 1,034 MPa. Calculated using a safety factor (K) of 4

Equation:
Pr = [ Cf * B * t * Ss * pi ] / K
    = [ (1.2) * (78.00 mm.) * (2.49 mm.) * (1,034 MPa) * 3.14 ] / 4

1Calculation assumes Carbon Steel for ring material, but Carbon Steel not necessarily available for all parts or sizes.
189,151N
Industry Equivalent Part Number(s):
DIN472-078