Vertical Screw Conveyor Capacity & Horsepower Calculation
Capacity, Sizing, and Speed Table | ||
---|---|---|
Vertical Screw Conveyor Diameter (Inches) |
Maximum Recommended Capacity (Cubic Feet per Hour) |
Recommended Speed Range (RPM) |
6 | 400 | 200-215 |
9 | 1300 | 200-215 |
12 | 3000 | 165-180 |
16 | 6000 | 135-150 |
Note: Maximum capacity based on CEMA recommendation for vertical screw conveyors
Calculation by Equation for Total Horsepower
Friction Horsepower Calculation (Horsepower required to drive the conveyor empty)
Material Horsepower Calculation (Horsepower required to move the material)
Total Shaft Horsepower
Equation Symbols
L | Vertical Lift Height |
---|---|
N | Conveyor Speed |
Fd | Diameter Factor |
Fb | Bushing Factor |
Cw | Conveyor Capacity (Pounds per Hour) |
Cv | Conveyor Capacity (Cubic Feet per Hour) |
W | Density (Pounds per Cubic Foot) |
Fv | Material Horsepower Factor (From Materials Table) |
Fi | Incline Factor |
Fo | Overload Factor (Correction for calculated horsepowers of less than five horsepower) |
e | Motor Efficiency |
Note: Maximum capacity based on CEMA recommendation for vertical screw conveyors