Formula symbolsValueUnitDescription
Material
EN 10270-1
-
Type of material
Spring ends
Closed
-
Spring ends
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
d
0.4
mm
Wire diameter
Di
mm
Inner coil diameter
D
5
mm
Mean coil diameter
De
5.4
mm
Outer coil diameter
Dd
4.1
mm
maximum diameter of mandrel
Dh
6
mm
minimum diameter of bush
L0
33.4
mm
unstressed spring length
Lk
23.31
mm
buckling length
Fn
4.228
N
maximum force in static use
Ln
8.07
mm
Minimum length in static use
sn
25.33
mm
Maximum spring deflection in static use
Fndyn
4.088
N
maximum force in dynamic use
Lndyn
8.91
mm
Minimum length in dynamic use
shdyn
9.47
mm
Maximum stroke in dynamic use
S
2.592
mm
pitch of spring
n
12.5
pc.
number of active coils
nt
pc.
total number of coils
R
0.167
N/mm
Spring rate
Weight
0.2262
g
weight of one spring
Fntol
0.34
N
(+/-) tolerance of maximum force in static use
Fndtol
0.34
N
(+/-) tolerance of maximum dynamic force
Detol
0.25
mm
(+/-) tolerances of outer coil diameter
L0tol
1.68
mm
(+/-) tolerance of unstressed spring length
Price group
B
-
price group
F1tol
N
(+/-) tolerance of prestressed spring force
F2tol
N
(+/-) tolerance of loaded spring force