KWS Manufacturing

Horizontal Screw Conveyor Calculator

Capacity, Horsepower, And RPM Calculation:

Save time by utilizing our Horizontal Screw Conveyor Calculator to accurately determine screw conveyor size, horsepower, and RPM requirements in a few easy clicks. Send your calculations directly to KWS engineers for review and input as required.

Visit the online engineering guide for assistance with using this calculator.

Step 1: SELECT YOUR BULK MATERIAL Step 2: DESIGN CONDITIONS  
Flowrate(m):     lb/hr
Density: View the materials table to select a density value.     lb/Ft^3
Loading (K):     %
Material Factor (Fm): View the materials table in our engineering guide.
                 
Step 3: CONVEYOR PARAMETERS    
Flight OD(D): View a descriptions of the conveyor flight types.   in.  
Flight ID(d):   in.  
Pitch(P) :   in.  
           
CALCULATIONS :  
  Shaftless Mass Flow Factor, C1    = 
  Spcl. Flight Type Factor, CF2    =   
           
Flowrate (v)    =  m    =   
            Density            
                             
                             
Capacity per revolution  =  0.7854 ( D² – d² ) P K 60 I C1  =   
          1728 CF2        
                             
                             
         

Everything below is hidden on purpose

Calc.:                 R =
 
            Selection:        
Cut Flight Capacity Factor, CF2 =  
Cut & Folded Flight Capacity Factor, CF2 =  
Ribbon Capacity Factor, CF2 =  
Mixing Paddle Capacity Factor, CF2 =  
                     
  Paddle FactorCF2:  
  CF2 calc                
                 
                 
                 
                 
                 
(PER CEMA )  
 

Visit the online engineering guide for assistance with using this calculator.

View a descriptions of the conveyor flight types.Click on symbol for more information.

Conveyor Length(L):   Ft   8. Paddles per Pitch : (0 – 4)
2. Conveyor Diameter (D):   in. 9. Flight Type : Standard
3. Conveyor Speed(N) :   rpm Cut Flight
4. Loading (K) :   %   Cut & Folded
          Ribbon
Drive Efficiency(e) :   %  
7. Hanger Bearing Type : Place an ‘x’ in the appropriate box        
    Ball, Roller or None Hard Iron, Stellite
    Arguto, Babbit, Bronze, Wood Plastech, Nylon, Teflon,
                UHMW
Step 4: DESIGN OUTPUTS
                     
CALCULATIONS :
  Diameter Factor(Fd)   =      
  Bearing Factor(Fb)   =    
  Paddle Factor(Fp)       =        
  Spcl. Flight Factor(Ff)   =  
                   
HPf = L N Fd Fb   =   Fo =  
    1000000                        
                             
HPm = Cw L Ff Fm Fp                      
    1000000                        
      -or- Minimum Required Horsepower:   HPt = (HPf + HPm) Fo = HP
Required Speed, N:  =   RPM
Note: The Maximum recommended RPM Depends on Product Selection – Select Material in Step 1 – or reference the Capacity Table here.
The design above has a screw that is rotating faster than the CEMA recommended RPM. KWS Recommends that you increase the diameter of the screw conveyor or consult with a KWS representative.
= Cv W L Ff Fm Fp         e      
    1000000                        
  exact : 2.03303699192
  -1.44625162034
   
     
     
         
             
avg % diff.            
           
             
             

View a descriptions of the conveyor flight types.Click on symbol for more information.

Get Connected

CEMA Standard Components and Complete Engineered Systems

Contact Us Online Resources
KWS Mfg Captain Conveyor

Ask CaptAIn Conveyor An AI Powered Bulk Material Handling Expert

AI Chatbot Disclaimer

CaptAIn Conveyor AI Chat