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
1.2
mm
Wire diameter
Di
mm
Inner coil diameter
D
9.8
mm
Mean coil diameter
De
11
mm
Outer coil diameter
Dd
8
mm
maximum diameter of mandrel
Dh
11.8
mm
minimum diameter of bush
L0
46.7
mm
unstressed spring length
Lk
mm
buckling length
Fn
75.52
N
maximum force in static use
Ln
18.1
mm
Minimum length in static use
sn
28.6
mm
Maximum spring deflection in static use
Fndyn
62.977
N
maximum force in dynamic use
Lndyn
22.85
mm
Minimum length in dynamic use
shdyn
8.75
mm
Maximum stroke in dynamic use
S
5.353
mm
pitch of spring
n
8.5
pc.
number of active coils
nt
pc.
total number of coils
R
2.641
N/mm
Spring rate
Weight
2.89
g
weight of one spring
Fntol
3.96
N
(+/-) tolerance of maximum force in static use
Fndtol
3.65
N
(+/-) tolerance of maximum dynamic force
Detol
0.3
mm
(+/-) tolerances of outer coil diameter
L0tol
1.02
mm
(+/-) tolerance of unstressed spring length
Price group
F
-
price group
F1tol
N
(+/-) tolerance of prestressed spring force
F2tol
N
(+/-) tolerance of loaded spring force