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ZST-250
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Ring Specs
(D) Free Diameter: 237.69 +0.00 / -1.78 mm.
(t) Thickness: 4.80 +0.13 / -0.13 mm.
(b) Radial Wall: 9.53 +0.10 / -0.20 mm.
Groove Specs:
(B) Application Diameter: 250.0 mm.
(G) Groove Diameter: 239.40 +0.20 / -0.20 mm.
(W) Groove Width: 5.31 +0.20 / -0.00 mm.
Groove Depth: 5.31 mm.
Other Specs
Approximate Weight per 1000:
(m) Material Thickness:1.57mm.
(N) Ring Number of Turns:3.000
(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
    = [ (250.01 mm.) * (5.31 mm.) * (310 MPa) * 3.14 ] / 2		646,472N
(Pr) Theoretical Thrust Load Capacity - Ring Shear:
Notes: Ring Material: 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
    = [ (250.01 mm.) * (4.80 mm.) * (827 MPa) * 3.14 ] / 3		1,039,306N
Industry Equivalent Part Number(s):
ZST-250