Formula symbolsValueUnitDescription
Material
EN 10270-1
-
type of material
F1
-
N
prestressed spring force
Fx
-
N
loaded force of the section
L1
-
mm
prestressed spring length
sx
-
mm
loaded deflection of the section
s1
-
mm
prestressed spring deflection
L0x
-
mm
unstressed length of the section
F2
-
N
loaded spring force
L2
-
mm
loaded spring length
s2
-
mm
loaded spring deflection
d
4
mm
wire diameter
D
21
mm
mean coil diameter
De
25
mm
outer coil diameter
L0
-
mm
unstressed spring length
Ln
-
mm
minimum length
sn
-
mm
maximum spring deflection
Fn
823.2
N
maximum force
sn1
2.92
mm
maximum spring deflection of one coil
R1
281.611
N/mm
spring rate of one coil
R
-
N/mm
spring rate
S
7.5
mm
pitch of spring, distance mid-wire to mid-wire
Dd
-
mm
maximum diameter of mandrel
Dh
-
mm
minimum diameter of bush
Weight
879.2
g
weight of one spring
Detol
-
mm
(+/-) tolerances of outer coil diameter
L0tol
-
mm
(+/-) tolerance of unstressed spring length
Fntol
-
N
(+/-) tolerance of maximum force
Price group
####AY
-
price group
F1tol
-
N
(+/-) tolerance of prestressed spring force
F2tol
-
N
(+/-) tolerance of loaded spring force