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
2.9
mm
Wire diameter
Di
-
mm
Inner coil diameter
D
16.5
mm
Mean coil diameter
De
19.4
mm
Outer coil diameter
Dd
12.9
mm
maximum diameter of mandrel
Dh
20.4
mm
minimum diameter of bush
L0
44
mm
unstressed spring length
Lk
mm
buckling length
Fn
486.954
N
maximum force in static use
Ln
25.78
mm
Minimum length in static use
sn
18.22
mm
Maximum spring deflection in static use
Fndyn
422.39
N
maximum force in dynamic use
Lndyn
28.2
mm
Minimum length in dynamic use
shdyn
6.01
mm
Maximum stroke in dynamic use
S
6.85
mm
pitch of spring
n
6
pc.
number of active coils
nt
-
pc.
total number of coils
R
26.734
N/mm
Spring rate
Weight
21.6516
g
weight of one spring
Fntol
32.45
N
(+/-) tolerance of maximum force in static use
Fndtol
31.93
N
(+/-) tolerance of maximum dynamic force
Detol
0.35
mm
(+/-) tolerances of outer coil diameter
L0tol
0.92
mm
(+/-) tolerance of unstressed spring length
Price group
L
-
price group
F1tol
-
N
(+/-) tolerance of prestressed spring force
F2tol
-
N
(+/-) tolerance of loaded spring force