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
3.6
mm
Wire diameter
Di
-
mm
Inner coil diameter
D
21.4
mm
Mean coil diameter
De
25
mm
Outer coil diameter
Dd
17
mm
maximum diameter of mandrel
Dh
26
mm
minimum diameter of bush
L0
63.5
mm
unstressed spring length
Lk
mm
buckling length
Fn
431.728
N
maximum force in static use
Ln
42.48
mm
Minimum length in static use
sn
21.02
mm
Maximum spring deflection in static use
Fndyn
383.702
N
maximum force in dynamic use
Lndyn
44.82
mm
Minimum length in dynamic use
shdyn
15.41
mm
Maximum stroke in dynamic use
S
7.047
mm
pitch of spring
n
8.5
pc.
number of active coils
nt
-
pc.
total number of coils
R
20.541
N/mm
Spring rate
Weight
56.7974
g
weight of one spring
Fntol
36.66
N
(+/-) tolerance of maximum force in static use
Fndtol
35.94
N
(+/-) tolerance of maximum dynamic force
Detol
0.35
mm
(+/-) tolerances of outer coil diameter
L0tol
1.47
mm
(+/-) tolerance of unstressed spring length
Price group
AA
-
price group
F1tol
-
N
(+/-) tolerance of prestressed spring force
F2tol
-
N
(+/-) tolerance of loaded spring force