? Type of input power (electrical motor, internal combustion engine with mechanical or hydraulic drive).
? Type of gear for being driven.
? Amount of horsepower expected to provide suffi cient energy to the 
driven shaft.
? Full load velocity in the quickest running shaft (rpm).
? Desired pace of the slow operating shaft ( or the needed pace ratio). NOTE: If speeds are variable decide the horsepower to become transmitted at every pace.
? Diameters on the drive and driven shafts . . . This value could restrict the minimal number of teeth for that sprockets.
? Center distance of the shafts.
? Note the position and any area limitations that could exist. Ordinarily these limitations are on the optimum diameter of sprockets (this restricts the use of single strand chains) or even the width of the chain (this restricts the usage of multi-strand chains).
? Conditions with the drive such as a determination of the class of load (uniform, reasonable or heavy), extreme working temperatures or chemically aggressive environments must be mentioned.
Abbreviations Used in Equations
N Quantity of teeth within the large sprocket.
n Quantity of teeth around the modest sprocket.
R Pace in revolutions per minute (rpm) with the massive sprocket.
r Speed in revolutions per minute (rpm) from the little sprocket.
C Shaft center distance in chain pitches.
HP Horsepower rating of your drive motor or engine.
KW Kilowatt energy rating of drive motor or engine if employing metric units.
SF Support Factor
