Support Washer Calculator DIN 988 — Module F

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.

Support Washer Calculator — DIN 988

Washer Dimensions

From DIN 988 tables or drawing.

D Outer diameter

d Inner diameter

s Thickness

b_m = — mm Y = — mm

Material

F Axial force

h Lever arm

h = lever arm at which force is applied to washer (same as retaining ring lever arm).

Context — Lever Arm Improvement (optional)

Enter to see how much the washer improves ring load capacity.

g Chamfer / corner

d₁ Ring nominal ⌀

K_ring Ring constant

N·mm

K_ring from Module A detail panel. Leave blank to skip load capacity comparison.

S Safety factor

—

Module F — Support washer (DIN 988) spring constant and lever arm reduction. Used alongside Module A when a rolling bearing chamfer reduces ring load capacity. Results update live.

Enter washer dimensions on the left — results update instantly.

DIN 988 support washer calculator — spring constant and axial displacement for support washers used alongside retaining rings to control lever arm and bearing stack clearance. Developed by AbarTech Ltd, Dyserth, North Wales.