? Type of input electrical power (electrical motor, inner combustion engine with mechanical or hydraulic drive).
? Type of equipment to be driven.
? Amount of horsepower necessary to supply suffi cient energy for the driven shaft.
? Full load pace on the quickest working shaft (rpm).
? Desired pace in the slow operating shaft ( or even the expected speed ratio). NOTE: If speeds are variable establish the horsepower to get transmitted at every pace.
? Diameters on the drive and driven shafts . . . This value may perhaps restrict the minimum number of teeth for the sprockets.
? Center distance from the shafts.
? Note the place and any room limitations that could exist. Normally these limitations are to the highest diameter of sprockets (this restricts the use of single strand chains) or the width from the chain (this restricts the use of multi-strand chains).
? Conditions in the drive which include a determination on the class of load (uniform, moderate or hefty), severe operating temperatures or chemically aggressive environments need to be noted.
Abbreviations Used in Equations
N Variety of teeth over the big sprocket.
n Amount of teeth to the little sprocket.
R Pace in revolutions per minute (rpm) on the large sprocket.
r Velocity in revolutions per minute (rpm) of the compact 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 applying metric units.
SF Service Factor