? Type of input energy (electrical motor, internal combustion engine with mechanical or hydraulic drive).
? Type of tools for being driven.
? Amount of horsepower necessary to provide suffi cient power to the driven shaft.
? Full load speed from the quickest working shaft (rpm).
? Desired velocity on the slow working shaft ( or even the required speed ratio). NOTE: If speeds are variable figure out the horsepower to be transmitted at each and every velocity.
? Diameters with the drive and driven shafts . . . This value may restrict the minimum quantity of teeth for the sprockets.
? Center distance of the shafts.
? Note the position and any area limitations that could exist. Generally these limitations are over the highest diameter of sprockets (this restricts the use of single strand chains) or even the width on the chain (this restricts the use of multi-strand chains).
? Conditions of your drive such as a determination of your class of load (uniform, reasonable or heavy), significant operating temperatures or chemically aggressive environments should be noted.
Abbreviations Used in Equations
N Amount of teeth around the substantial sprocket.
n Variety of teeth within the smaller sprocket.
R Speed in revolutions per minute (rpm) from the substantial sprocket.
r Pace in revolutions per minute (rpm) with the small sprocket.
C Shaft center distance in chain pitches.
HP Horsepower rating of the drive motor or engine.
KW Kilowatt energy rating of drive motor or engine if employing metric units.
SF Service Factor