S&F Communications

Pulling Calculator

  • To reduce pulling tension always pull from the end nearest the largest bend
  • If you are unsure what you bend radius is you can use the calculator below to compute the radius of an arch.
  • Many things can affect the coefficient of friction. 0.5 is usually used as a conservative number for clean conduit in a new install. You can also consult the coefficient of friction cart .
  • The pulling angle is the angle form the end of the conduit to the pulling point on the capstan.
  • The short bend radius calculator should be used when the length of the pull is short and the weight of the cable is in significant.
           
           
Straight Pulls Conduit Length Cable Weight lbs/ft Coefficient of Friction Pulling Tension  
Straight 1  
Straight 2  
Straight 3  
Straight 4  
Section 5  
Straight 6  
  feet lbs./ft.   lbs. of force  
           
           
Large Bend Radius Curved Section Curved 1 Curved 2 Curved 3 Curved 4  
Tension For Straight Section At Pulling End lbs.
Tension For Straight Section At Feeding End lbs.
Weight Of Cable lbs./foot
Radius Of Bend feet
Angle Of Bend degrees
Coefficient Of Friction  
Pulling tension lbs. of Force
           
           
Short Bend Radius Short Bend 1 Short Bend 2 Short Bend 3 Short Bend 4  
Feed End Tension lbs.
Pulling End Tension lbs.
Angle Of Bend degrees
Coefficient of Friction  
Pulling Tension lbs. of Force
           
Pulling Angle       Bend Radius Calculator  
Feed End Tension lbs. of force   Angle Length
Angle degrees  
Coefficient of Friction    
Pulling Tension lbs. of Force   Bend Radius
           
           
           
  Total Pulling Tension    
    lbs. of force    

Automatic recalculation 

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