Course Number 112 Chain and Sprockets - Sprockets & Drives 12 hours of instruction  Format: Programmed Instruction Self-study Price: $35.75

Identification of roller chain sprockets; dimensions and measurement; styles and strands of sprockets; four standard types of sprockets; split and taper-lock sprockets; pitch and pitch diameter of sprockets; basic rules for meshing; standard and ASA sprockets; three major sprocket diameters and how to find them using tables; sprocket catalogs and how to use them for finding and identifying sprockets; sprocket and speed ratios for single- and multiple-reduction chain drives; exercises in finding number of teeth and speeds of drive and driven sprockets by use of simple formulas. Also explained are speed-increasing drives; direction of rotation of sprockets; idler sprockets; chain "wrap"; sag and tension; relationship between taut and slack side and direction of rotation in chain drives; how to measure chain sag and how to correct chain tension; installation and alignment procedures; procedure for dismantling a chain drive; use of chain-breaking tools; principles and standard types of roller chain and sprocket lubrication; cleaning and storing of chains and sprockets; and safety rules for their operation and maintenance.

Prerequisites -Ability to perform simple arithmetic calculations and to read simple engineering drawings (Course Number 109). Knowledge of roller chains (Course Number 55), spur gears (Course Number 26), gear ratios (Course Number 61), and gear installation (Course Number 66).

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Related Instruction:

Course Number 26 - Gears and Gearing - Spur Gears

Course Number 55 - Chains and Sprockets - Roller Chains

Course Number 61 - Gear Ratios

Course Number 66 - Gears and Gearing -Gear Installation