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
1.6
mm
Wire diameter
Di
-
mm
Inner coil diameter
D
20
mm
Mean coil diameter
De
21.6
mm
Outer coil diameter
Dd
17.7
mm
maximum diameter of mandrel
Dh
23
mm
minimum diameter of bush
L0
165
mm
unstressed spring length
Lk
134.9
mm
buckling length
Fn
83.122
N
maximum force in static use
Ln
40.5
mm
Minimum length in static use
sn
124.5
mm
Maximum spring deflection in static use
Fndyn
74.109
N
maximum force in dynamic use
Lndyn
54
mm
Minimum length in dynamic use
shdyn
39.6
mm
Maximum stroke in dynamic use
S
13.072
mm
pitch of spring
n
12.5
pc.
number of active coils
nt
-
pc.
total number of coils
R
0.668
N/mm
Spring rate
Weight
14.4797
g
weight of one spring
Fntol
4.31
N
(+/-) tolerance of maximum force in static use
Fndtol
4.28
N
(+/-) tolerance of maximum dynamic force
Detol
0.45
mm
(+/-) tolerances of outer coil diameter
L0tol
4.43
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