417
Determine application
To be able to determine the spring characteristics exactly,
please complete all 5 boxes.
Load total =Total number of stress reversals
Load frequency=Number of stress reversals per minute
Excursion=Length of working travel "sh" (stroke)
Working environment=Around the spring (water, oil, air...)
Application temperature=Temperature the spring is exposed to
Guidance and seat
When a spring is guided through a mandrel or bush it cannot
buckle. In other cases it depends buckling depends on the
design of the seat.
Compression springs
not closed
closed
ground
pic. 1 pic. 2 pic. 3 pic. 4 pic. 5
d mm wire diameter
D mm mean coil diameter
Di mm inner coil diameter
De mm outer coil diameter
Dd mm maximum diameter of mandrel
Dh mm minimum diameter of bush
L0 mm unstressed spring length
n pc.
number of active coils
nt pc.
total number of coils
S mm pitch of spring
F1 N prestressed spring force
F2 N loaded spring force
L1 mm prestressed spring length
L2 mm loaded spring length
s1 mm prestressed spring deflection
s2 mm loaded spring deflection
sh mm excursion
R N/mm spring rate
Production compensation
As standard, we compensate the number of spring coils (n) in order to meet
requirements.
Fixed parameters
Compensated by
One spring force and respective length of the tensioned spring
1. L0
One spring force, respective length of the tensioned spring and L0
2. n,d
One spring force, respective length of the tensioned spring and L0 3. n,De,Di
Two spring forces and respective lengths of the tensioned springs 4. L0,n,d
Two spring forces and respective lengths of the tensioned springs 5. L0,n,De,Di
Tolerances
Select the quality grade for the
compression springs. Our com-
pression springs are usually manu-
factured to EN 15800 Grade 2 as
standard. If you select Grade 1, your
compression spring is manufac-
tured according to the smallest
tolerance range, and for Grade 3
with the largest tolerance range.
Test certificate
DIN EN 10204-2.1 free of charge
DIN EN 10204-2.2 EUR 15,34
DIN EN 10204-3.1 EUR 30,68
Material
Please select one of the materials given or enter another
material from thematerial table on page 8.
Coiling direction
Spring ends
Select the spring ends you require. Compression springs with a
wire diameter of less than 0.5 mm cannot be delivered in a
"ground" version, or only at significantly increased expense.
Surface treatment
Select a surface treatment frompage 13 if required.
right
left
