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M1800-004
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Ring Specs
(D) Free Diameter: 3.00 +0.05 / -0.05 mm.
(t) Thickness: 0.41 +0.00 / -0.05 mm.
(b) Radial Wall:
Groove Specs:
(B) Application Diameter: 4.0 mm.
(G) Groove Diameter: 3.20 +0.00 / -0.08 mm.
(W) Groove Width: 0.43 +0.05 / -0.00 mm.
Groove Depth: 0.39 mm.
Other Specs
Approximate Weight per 1000: 0.040 kg.
(C) Free Outside Diameter:5.00mm.
(C1) Outside Diameter when Sprung Into Groove:5.20mm.
(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
    = [ (0.5) * (3.99 mm.) * (0.39 mm.) * (310 MPa) * 3.14 ] / 2		391N
(Pr) Theoretical Thrust Load Capacity - Ring Shear:
Notes: Ring Material: Carbon Spring Steel (SAE 1060-1090). Shear Strength of Ring Material (Ss): 690 MPa. Calculated using a safety factor (K) of 4

Equation:
Pr = [ Cf * B * t * Ss * pi ] / K
    = [ (0.5) * (3.99 mm.) * (0.41 mm.) * (690 MPa) * 3.14 ] / 4		436N
Industry Equivalent Part Number(s):
M1800-004, M1800-4