BINSFELD ENGINEERING INC.
Torque Calculators
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Units: ENGLISH
Units: METRIC
TorqueTrak
10K
TorqueTrak
TPM2
TorqueTrak
Revolution
Torque Strain
Torque Strain Calculator
Torque Strain Calculations
for Solid or Hollow Shaft
Outer Diameter (D
O
)
inches
Inner Diameter (D
I
)
inches (enter 0 for solid shaft)
Torque (T)
ft-lb
Modulus of Elasticity (E)
Mpsi (30 Mpsi for steel)
Poisson Ratio (v)
(0.3 for steel)
microstrain
Shunt Resistance Calculations
for Solid or Hollow Shaft
Torque Strain (ε)
microstrain
Gage Resistance (Rg)
(350 ohms typical)
Number of Active Gages (N)
1
2
3
4
(4 for full bridge)
Gage Factor (GF)
(supplied with gages)
Resistance
Equations
`"Torque Strain", epsilon=(192*T*D_O*(1+v)) / (pi*(D_O^4 - D_I^4)*E)`
`"Shunt Calibration Resistance", R_C=(R_G) / (N*GF*epsilon)`
