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DIN471-021
Display Units: inches  |  metric
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Ring Specs
(D) Free Diameter: 19.50 +0.21 / -0.42 mm.
(t) Thickness: 1.20 +0.00 / -0.06 mm.
(b) Radial Wall:
Groove Specs:
(B) Application Diameter: 21.0 mm.
(G) Groove Diameter: 20.00 +0.00 / -0.21 mm.
(W) Groove Width: 1.30 +0.14 / -0.00 mm.
Groove Depth: 0.50 mm.
Other Specs
Approximate Weight per 1000: 1.257 kg.
(C) Clearance Diameter When Sprung onto Shaft:30.20mm.
(C1) Clearance Diameter When Sprung into Groove:28.19mm.
(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) * (21.00 mm.) * (0.50 mm.) * (310 MPa) * 3.14 ] / 2		6,236N
(Pr) Theoretical Thrust Load Capacity - Ring Shear:
Notes: Ring Material: 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) * (21.00 mm.) * (1.20 mm.) * (1,034 MPa) * 3.14 ] / 4		24,428N
Industry Equivalent Part Number(s):
DIN471-021, A21, D1400-210, DSH-21, DIN471-21