Check the compression springs
for spring deflection
(static use)
s2
F2
2
· R =
< Fn s < sn
F2
for spring lengths
(static use)
(L0 - ) · R =
< Fn
> Ln
F2
L2
F2
L2
for spring stroke
(dynamic use)
(L0 - ) < shdyn
L2
for spring rate
(static use)
F2 - F1
L1 - L2
= R
F2 - F1
L2 - L1
= R
Check extension springs
for spring deflection
s2
F2
2
· R + F0 =
< Fn s < sn
F2
for spring lengths
( - L0) · R + F0 =
< Fn
< Ln
F2
L2
F2
L2
for spring rate
F2
L2
< Fn
< Ln
Check torsion springs
for rotational angle
2
·
Mn
n
= M2
M2
2
< Mn
< n
Calculate torque
F2 · RH
=
M2 < Mn
M2
Calculate force
M2
RH
= F2
F2
L2
< Fn
> Ln
Spring selection check card
for spring forces
(static use)
s2
F2
< sn
< Fn
F2
R
= s2
F2
- F0
R
= s2
s2
F2
< sn
< Fn
for spring forces
· The spring selection check card is designed to help you select our catalogue springs. You can enter your load parameters (s2, L2, F2
...) to calculate further values to check and compare with the catalogue data.
· The equation symbols in must be entered by yourself in the calculation and compared with the data from the catalogue.
blue
· For more detailed explanations of the equation symbols please see the descriptions at the beginning of the different spring types.
· Please remember when checking a dynamic compression spring to check the additional maximum spring stroke (L0-L2 < shdyn).
· We wish you every success in selecting our items.
R = Spring rate
s2 = Loaded spring deflection
sn = Maximum spring deflection
2 = Loaded rotational angle
n = Maximum rotational angle
M2 = Loaded torque
Mn = Maximum torque
RH = Distance power flow point from
centre (leverage)
F0 = Initial tension
F1 = Prestressed spring force
F2 = Loaded spring force
Fn = Maximum spring force
L0 = Unstressed spring length
L1 = Prestressed spring length
L2 = Loaded spring length
Ln = Min./max. spring length
Always the right spring, whether ex-stock or custom-made
