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
1.25
mm
Wire diameter
D
mm
mean coil diameter
De
12.7
mm
outer coil diameter
Dh
15
mm
minimum bush diameter
L0
32.7
mm
length of unstressed spring, measured from inner edge of loop to inner edge of loop
Lk
15.63
mm
length of unstressed spring body
Ln
mm
maximum spring length, inner loop to inner loop
sn
36.13
mm
Maximum spring deflection
Fn
56.71
N
Maximum spring force
n
pc.
Number of aktive coils
nt
pc.
total number of coils
Lh
8.54
mm
distance of inner edge of loop from the spring body
R
1.441
N/mm
Spring rate
F0
4.661
N
initial tension
Fntol
3.24
N
(+/-) tolerance of maximum spring force
L0tol
0.9
mm
(+/-) tolerance of unstressed length
Detol
0.35
mm
(+/-) tolerance of outer coil diameter
Oesttol
18
degree
(+/-) tolerance of loop position
Weight
4.626
g
weight of one spring
Price group
ZF
-
price group