Formula symbolsValueUnitDescription
Material
EN 10270-1
-
type of material
Eylet shape
1/1 deutsche
-
Eylet shape
F1
N
prestressed spring force
L1
mm
Prestressed spring length
s1
mm
prestressed spring deflection
F2
N
loaded spring force
L2
mm
loaded spring length
s2
mm
loaded spring deflection
Eyelet position
180
°
Eyelet position
d
0.32
mm
Wire diameter
D
mm
mean coil diameter
De
4.32
mm
outer coil diameter
Dh
5
mm
minimum bush diameter
L0
10
mm
length of unstressed spring, measured from inner edge of loop to inner edge of loop
Lk
4
mm
length of unstressed spring body
Ln
mm
maximum spring length, inner loop to inner loop
sn
22.42
mm
Maximum spring deflection
Fn
3.431
N
Maximum spring force
n
pc.
Number of aktive coils
nt
pc.
total number of coils
Lh
3
mm
distance of inner edge of loop from the spring body
R
0.145
N/mm
Spring rate
F0
0.181
N
initial tension
Fntol
0.3
N
(+/-) tolerance of maximum spring force
L0tol
0.6
mm
(+/-) tolerance of unstressed length
Detol
0.2
mm
(+/-) tolerance of outer coil diameter
Oesttol
25
degree
(+/-) tolerance of loop position
Weight
0.1072
g
weight of one spring
Price group
ZD
-
price group