? Type of input energy (electrical motor, inner combustion engine with mechanical or hydraulic drive).
? Type of tools to be driven.
? Amount of horsepower expected to supply suffi cient electrical power to the driven shaft.
? Full load speed on the quickest operating shaft (rpm).
? Desired speed from the slow operating shaft ( or even the required pace ratio). NOTE: If speeds are variable figure out the horsepower to become transmitted at just about every velocity.
? Diameters in the drive and driven shafts . . . This value may restrict the minimum variety of teeth to the sprockets.
? Center distance in the shafts.
? Note the position and any space limitations that may exist. Generally these limitations are around the greatest diameter of sprockets (this restricts using single strand chains) or the width on the chain (this restricts using multi-strand chains).
? Conditions of your drive including a determination from the class of load (uniform, moderate or heavy), extreme working temperatures or chemically aggressive environments really should be noted.
Abbreviations Used in Equations
N Number of teeth about the large sprocket.
n Number of teeth within the tiny sprocket.
R Speed in revolutions per minute (rpm) from the substantial sprocket.
r Velocity in revolutions per minute (rpm) from the tiny sprocket.
C Shaft center distance in chain pitches.
HP Horsepower rating with the drive motor or engine.
KW Kilowatt power rating of drive motor or engine if employing metric units.
SF Service Factor