Compression Spring Calculus

Tension Spring Calculus

Torsion Spring Calculus

▶Compression Spring Calculus

Item to be input	Input Field	Unit	Remark
Free Height		mm
External Diameter(D2)		mm
Wire Diameter(d)		mm
Total Number of Winding(Nt)		Winding
Number of Effective Winding(Na)		Winding	Total Number of Winding - 2
Material No.		-	Entrance of Material No.
Upon attachment		mm
Upon operation		mm

▶Result of Calculation

Item	Resulting Value	Unit	Remark
Average Diameter(D)		mm
Internal Diameter(D1)		mm
a unit length(L)		mm
단량		g	a unit
density		-
modulus of transverse elasticit(G)		kg/mm²
Integer(k)		kg/mm
Load1(F1)		kgf
Stress1(Z1)		kg/mm²
Load2(F2)		kgf
Stress2(Z1)		kg/mm²
Spring Index(C)		-
Stress Correction Coefficient (K)		-
Pitch (grinding)		mm
Pitch (non-grinding)		mm
Solid Height(grinding)		mm
Solid Height(non-grinding)		mm
tensile strength		-
allowable stress		kg/mm²
Maximum Use Stress Ratio		%

The maximum use stress should be designed to less than 80 percent of allowable stress taking safety ratio into account. If not, permanent transformation or damage may be resulted.

Please use this calculus only for reference, and Kyungju Spring has no responsibility for any result of application.