Steel extension springs

MATERIAL
Music wire to UNI EN 10270.1 – SH
Stainless steel wire to UNI EN 10270.3 – NS (1.4310)

COILED
Right hand with initial preload.

ENDS
German loops closed. End position may vary.

TOLERANCES
All dimensions and forces to DIN 2097 (grado 2).

SURFACE FINISH
Lubricated for springs with high carbon content.


d = wire diameter
De = outside diameter
Dm = mean coil diameter (De-d)
Lo = free length
L1 = maximum extended length
P1 = load at L1
F1 = extension at force P1
P/f = rate
1 Newton 0,10197 Kg.