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
4
mm
Wire diameter
Di
mm
Inner coil diameter
D
50
mm
Mean coil diameter
De
54
mm
Outer coil diameter
Dd
44.8
mm
maximum diameter of mandrel
Dh
56.2
mm
minimum diameter of bush
L0
490
mm
unstressed spring length
Lk
429.22
mm
buckling length
Fn
432.23
N
maximum force in static use
Ln
106.74
mm
Minimum length in static use
sn
383.26
mm
Maximum spring deflection in static use
Fndyn
392.469
N
maximum force in dynamic use
Lndyn
142
mm
Minimum length in dynamic use
shdyn
131.57
mm
Maximum stroke in dynamic use
S
26.27
mm
pitch of spring
n
18.5
pc.
number of active coils
nt
pc.
total number of coils
R
1.128
N/mm
Spring rate
Weight
319.863
g
weight of one spring
Fntol
19.92
N
(+/-) tolerance of maximum force in static use
Fndtol
19.71
N
(+/-) tolerance of maximum dynamic force
Detol
0.8
mm
(+/-) tolerances of outer coil diameter
L0tol
11.91
mm
(+/-) tolerance of unstressed spring length
Price group
AE
-
price group
F1tol
N
(+/-) tolerance of prestressed spring force
F2tol
N
(+/-) tolerance of loaded spring force