Gear flank permissible-stress factor, K_C,tot — ISO 6336-2

Total correction factor σ_HP/σ_H,lim = (Z_NT·Z_L·Z_v·Z_R·Z_w·Z_x)/S_H for the permissible flank (contact) stress in the ISO 6336-2 pitting calculation.

✓ validated against legacyoriginal: /calculators/kc.htm

Life factor, Z_NT (N < 1e5 cycles)Lubricant factor, Z_LVelocity factor, Z_vRoughness factor, Z_RWork hardening factor, Z_wSize factor, Z_xSafety factor, S_H

Total correction factor, σ_HP/σ_H,lim = (Z_NT·Z_L·Z_v·Z_R·Z_w·Z_x)/S_H0.92

Method & references

ISO 6336-2: Calculation of load capacity of spur and helical gears — permissible flank stress correction factors.

The computation is a literal port of the original client-side JavaScript from /calculators/kc.htm. Results are verified equal to the original by an automated golden-master test. No formula has been re-derived or “improved”.

Gear flank permissible-stress factor, K_C,tot — ISO 6336-2 — Engineering ABC