The tables below describes the symbol nomenclature you can use when calculating your own equations/variables. Please note:.


  • All labels are case sensitive
  • Values returned are in metric units



Length

Lk

Body length


Dimensions

d

Wire diameter

De

Outside diameter

Di

Inside diameter

D

Mean coil diameter

m

Pitch


Other factors

n or nt

Total coils

w

Spring index

R

Spring rate

Lw

Wire length

M

Mass of single spring

M100

Mass of 100 springs

M1000

Mass of 1000 springs


Material properties

G

Rigidity modulus

E

Young's modulus

ro

Density


Working positions

M1  or M2

Torque at position 1 or 2

a1  or  a2

Angular deflection at position 1 or 2

Tau1  or  Tau2

Uncorrected stress at position 1 or 2

Tauk1  or  Tauk2

Corrected stress at position 1 or 2


Tolerances


Note: for most of these values, it will depend on the currently selected tolerance grade. If this is "None", the result will be zero.

M1tol or M2tol

Torque tolerance at position 1 or 2

L0tol

Free length tolerance

Dtol

Coil diameter tolerance