Formula symbolsValueUnitDescription
Material
EN 10270-1
-
Type of material
Spring ends
Closed and ground
-
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
1
mm
Wire diameter
Di
mm
Inner coil diameter
D
6
mm
Mean coil diameter
De
7
mm
Outer coil diameter
Dd
4.6
mm
maximum diameter of mandrel
Dh
7.5
mm
minimum diameter of bush
L0
14
mm
unstressed spring length
Lk
mm
buckling length
Fn
39.901
N
maximum force in static use
Ln
8.92
mm
Minimum length in static use
sn
5.08
mm
Maximum spring deflection in static use
Fndyn
36.238
N
maximum force in dynamic use
Lndyn
9.39
mm
Minimum length in dynamic use
shdyn
3.67
mm
Maximum stroke in dynamic use
S
2.167
mm
pitch of spring
n
6
pc.
number of active coils
nt
pc.
total number of coils
R
7.861
N/mm
Spring rate
Weight
0.9362
g
weight of one spring
Fntol
4.27
N
(+/-) tolerance of maximum force in static use
Fndtol
4.21
N
(+/-) tolerance of maximum dynamic force
Detol
0.2
mm
(+/-) tolerances of outer coil diameter
L0tol
0.46
mm
(+/-) tolerance of unstressed spring length
Price group
C
-
price group
F1tol
N
(+/-) tolerance of prestressed spring force
F2tol
N
(+/-) tolerance of loaded spring force