Backdrive Torque Formula

Jul 15, 2011 at 9:46 pm in Formulas, Reference by admin


The formula to calculate back driving torque is:

Td=(P*L*e)/(2*PI)=.143 P*L

Where:

  • Td = Drive Torque (pound-inches)
  • P = Load (lbs.)
  • L = Screw Lead (inches/turn)
  • e = Ball Bearing Screw Efficiency (90%)
  • PI=3.1415926535897932