Power Requirement (\( HP \)):

\[ HP = \frac{L \cdot (D \cdot S + Q \cdot K)}{1,000,000} \]

Where:

• \( HP \) is the horsepower requirement, in horsepower (hp).
• \( L \) is the overall length, in feet (ft).
• \( D \) is the bearing factor, ranging from 10 to 106 for ball bearing at conveyor diameter of 7.5 to 40 cm.
• \( S \) is the speed, in revolutions per minute (rpm).
• \( Q \) is the quantity of materials, in pounds per hour (lbs/hr).
• \( K \) is the material factor, ranging from 0.4 to 0.7.