Radial Retaining Ring Calculator — ST, DIN 6799, Crescent

Free to use, provided as-is. No warranty or guarantee of accuracy or fitness for purpose. AbarTech Ltd accepts no liability for outcomes arising from its use.

Radial Retaining Ring Calculator

Ring Type

Standard radially-assembled ring. Uses same stress equation as axial rings.

Ring Dimensions

d₁ Shaft diameter

d₃ Unstressed inner ⌀

d₃ < d₁ for shaft rings. DIN 6799: groove ⌀ = d₁, so d₃ is the ring's natural inner ⌀.

b Radial width

s Thickness

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Material

Module D — Radially assembled rings. For axially assembled rings use Module A. Assembly stress check only — results update live.

Enter ring dimensions on the left — results update instantly.

Radial retaining ring calculator for ST rings, DIN 6799 E-rings and crescent rings — assembly bending stress, plier opening force and crescent ring gap enlargement. Seeger method for radially-assembled snap rings and circlip alternatives. AbarTech Ltd, Dyserth, North Wales.