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Unformatted text preview: Selecting the Drive From drive selection chart on page PT7-50 870rpm driver = 4.8 inch diameter sheave 293rpm driven = 14 inch diameter sheave 2.97:1 speed ratio 3.2hp per 3VX belt This meets minimum sheave diameter requirement. Number of Belts Required From drive selection chart on page PT7-51, for speed ratio of 2.97:1: Center Distance (CD) = 22.3 inches Belt Part Number: 3VX750 Arc-Length Correction Factor = 1.01 Corrected HP per Belt = HP per Belt · Arc-Length Correction Factor = 3.2hp · 1.01 = 3.23 corrected HP # of Belts = Design HP / Corrected HP per Belt = 5.2hp / 3.23chp = 1.61 Rounding up, use two 3VX750 belts Needed Quantity Part Number 2 3VX750 V-belts 1 2 3V 475 SDS sheave 1 1 5/8 QD-type bushing with 3/8” x 3/16” keyway 1 2 3V 1400 SK sheave 1 SK 1 ¾ SK QD-type bushing with 3/8” x 3/16” keyway...
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This note was uploaded on 04/08/2008 for the course HIST 1 taught by Professor W during the Spring '08 term at Drexel.
- Spring '08