PTO Selection Guide
 

STEP ONE: SELECT TYPE

For side load applications use one of the following formulas for determining the actual applied load :

L = Actual Applied Load (lbs. for #1 and Kgs for #2)
N = Shaft Speed (RPM)
D = Pitch Diameter (in. for #1 and mm for #2) of Sheave
F = Load Factor
  1.0 for Chain Drive or Gear Drive 1.5 for Timing Belts
  2.5 for All V-belts 3.5 for All Flat Belts
SF = Service Factor
  2.1 for Reciprocating Compressors and other severe shock drives
  1.8 for Large Inertia Drives such as Crushers, Chippers, and Planers

  

  **For Inline Applications Skip to Step 2**
 

STEP TWO: SELECT CLUTCH SIZE

For all PTO applications use one of the following formulas for determining the clutch size based on horsepower or Kilowatts per 100 RPM:

HP = Maximum rated engine horsepower
Kw = Maximum rated Kilowatts
RPM = Shaft Speed

  
 
CLUTCH SIZE
MAX HP (Kw)/ 100 RPM*
214H
22(16)
314H
33(25)
218
38(28)
318
60(45)
321
117(87)
 
 
 
     
Copyright © 1992-2007, WPT® is a registered trademark of WPT Power Transmission Corporation, Twin Disc® is a registered trademark of Twin Disc Corp., and Wichita Clutch® is a registered trademark of Wichita/Altra. WPT is not an authorized original equipment manufacturer of Twin Disc® or Wichita Clutch® products.