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
4.5
mm
Wire diameter
Di
mm
Inner coil diameter
D
70.5
mm
Mean coil diameter
De
75
mm
Outer coil diameter
Dd
64.1
mm
maximum diameter of mandrel
Dh
79
mm
minimum diameter of bush
L0
615
mm
unstressed spring length
Lk
516.3
mm
buckling length
Fn
387.347
N
maximum force in static use
Ln
111.4
mm
Minimum length in static use
sn
503.6
mm
Maximum spring deflection in static use
Fndyn
374.79
N
maximum force in dynamic use
Lndyn
127.73
mm
Minimum length in dynamic use
shdyn
204.71
mm
Maximum stroke in dynamic use
S
39.387
mm
pitch of spring
n
15.5
pc.
number of active coils
nt
pc.
total number of coils
R
0.769
N/mm
Spring rate
Weight
487.2731
g
weight of one spring
Fntol
21.59
N
(+/-) tolerance of maximum force in static use
Fndtol
21.4
N
(+/-) tolerance of maximum dynamic force
Detol
1.4
mm
(+/-) tolerances of outer coil diameter
L0tol
20.52
mm
(+/-) tolerance of unstressed spring length
Price group
AL
-
price group
F1tol
N
(+/-) tolerance of prestressed spring force
F2tol
N
(+/-) tolerance of loaded spring force