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Belt drive alignment

Belt drive alignment

Belt drive alignment

I would like to talk to someone with indepth belt drive design experience.  I am working on a 50hp 3600RPM drive design using Gates GT2 Polychain cog belt for a OEM application.  One of the problems of the design that conserns me is alignment.  Have you ever had to realign a machine after tensioning the belt?  The book says to get within a quarter degree agularity and +/-.125" offset, which is fairly tight.  I need tools and a process that only use a fraction of this tolerance window, are rugged, easy to use, and highly repeatable.  What tools and methods have you found to be most effective for precision alignment of pulleys?

I have evaluated several laser tools including the one Gates recommends without being fully satisfied.

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