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
1.25
mm
wire diameter
D
17.75
mm
mean coil diameter
De
19
mm
outer coil diameter
L0
mm
unstressed spring length
Ln
mm
minimum length
sn
mm
maximum spring deflection
Fn
27.74
N
maximum force
sn1
6.23
mm
maximum spring deflection of one coil
R1
4.447
N/mm
spring rate of one coil
R
N/mm
spring rate
S
8
mm
pitch of spring, distance mid-wire to mid-wire
Dd
mm
maximum diameter of mandrel
Dh
mm
minimum diameter of bush
Weight
68.82
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
#AQ
-
price group
F1tol
N
(+/-) tolerance of prestressed spring force
F2tol
N
(+/-) tolerance of loaded spring force