Spring Diagram & Parameters
Spring Rate (k)
—N/mm
Enter parameters and calculate
Spring Index (C = D/d)
—
Recommended: 4 – 12
Max Torsional Stress
—MPa
Detailed Results
Wahl Factor (Kw)—
Wire Length—
Solid Length—
Free Length—
Max Deflection—
Key Formulas
Spring Ratek = Gd⁴ / 8D³Nₐ
Spring IndexC = D / d
Wahl FactorKw = (4C−1)/(4C−4) + 0.615/C
Max Stressτ = Kw · 8FD / πd³
Deflectionδ = F / k