Formula symbolsValueUnitDescription
Material
EN 10270-3-1.4310
-
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
1.25
mm
Wire diameter
Di
mm
Inner coil diameter
D
6.8
mm
Mean coil diameter
De
8.05
mm
Outer coil diameter
Dd
5.1
mm
maximum diameter of mandrel
Dh
8.5
mm
minimum diameter of bush
L0
36
mm
unstressed spring length
Lk
8
mm
buckling length
Fn
71.404
N
maximum force in static use
Ln
21.81
mm
Minimum length in static use
sn
14.19
mm
Maximum spring deflection in static use
Fndyn
65.222
N
maximum force in dynamic use
Lndyn
23.04
mm
Minimum length in dynamic use
shdyn
6.63
mm
Maximum stroke in dynamic use
S
2.574
mm
pitch of spring
n
13.5
pc.
number of active coils
nt
pc.
total number of coils
R
5.033
N/mm
Spring rate
Weight
3.212
g
weight of one spring
Fntol
6.66
N
(+/-) tolerance of maximum force in static use
Fndtol
6.57
N
(+/-) tolerance of maximum dynamic force
Detol
0.25
mm
(+/-) tolerances of outer coil diameter
L0tol
1.11
mm
(+/-) tolerance of unstressed spring length
Price group
H
-
price group
F1tol
N
(+/-) tolerance of prestressed spring force
F2tol
N
(+/-) tolerance of loaded spring force