경주스프링
KOREAN ENGLISH
Compression Spring Calculus Tension Spring Calculus Torsion Spring Calculus


Material Piano wire Hard steel wire Sten
Material No. 1 2 3
modulus of transverse elasticit 8,000 8,000 7,000


▶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.
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