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FORMULAS
• Torque (ft-lbs) using HP, RPM & a constant
• Torque (in-lbs) using Load, Radius & Coef. of Friction
• Torque (in-lbs) using Load & Radius on a vertical axis (lifting torque)
• Torque (in-lbs) using HP, RPM & a constant
• HP using Torque (in-lbs), RPM & a constant
• HP using Load, Distance & a constant
• HP using Load, Velocity (fpm) & a constant
• HP using Voltage, Current, Eff. of motor & a constant
• Feet per Minute using DIA of head pulley & RPM
• RPM using dia of
head pulley and
velocity (fpm)
• Belt Length needed to achieve a given center distance using DIA of head pulley
• Max Speed (in-sec) for sizing servo using Distance, Speed (sec) & accel/decel times
• Convert Farenheit to Celsius & vice versa
   
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The links on this page provide you with formulas to help in the sizing of drives. While these formulas should prove very helpful in getting you on the right track toward sizing or pricing a drive, there are many variables, such as coefficiency of friction, that cannot be accounted for exactly. Use these formulas to size drives, but be sure and consult your Simco rep before ordering materials.