189
Extension springs
formula unit
technical term
inquiry formula unit
technical term
inquiry
d
mm wire diameter
Lk
mm length of relaxed spring body
D
mm mean coil diameter
L0
mm unstressed spring length, inner loop to inner loop
De
mm outer coil diameter
L0tol
mm +/- tolerance of unstressed length
Detol
mm +/- tolerance of outer coil diameter
Ln
mm maximum spring length, inner loop to inner loop
Dh
mm minimum bush diameter
sn
mm maximum spring deflection
F0
N
initial tension
Lh
mm distance of inner edge of loop from the spring body
Fn
N
maximum spring force
m
mm loop opening width
Fntol
N
+/- tolerance of maximum spring force
R
N/mm spring rate
Data sheets at
federnshop.com
Extension springs
