Search the Community
Showing results for tags 'idler'.
Hello all, I do hope this is the correct place for this question. I'm in the process of building a 2"X72" belt grinder - doing as much as possible myself - my time is cheap since I'm retired. Question about the wheels used on the grinder - The motor drive wheel I built from a 4" aluminum rod - 2" wide and flat across the top. Is flat across the top normal? OR do they have a slight crown? If so, how much of a crown - 1/8"? The tracking wheel (this is the spring loaded wheel) - I'd plan to make it from 3" diameter aluminum rod with 1/2" ID roller bearings. Question, does this tracking wheel normally have a crown? If so, how much? The two platen wheels - I'd planned 2" aluminum rod for these, and from photos I've seen they look flat across the top - of course as the other wheels the edges are "broke over" with perhaps an 1/8" (or slightly less?) radius. Thank you all for any help or suggestions. Ken H>
Setting up a dupont 50lb hammer. All dismantled cleaned, Lubed and reassembled I had ordered a 2.5" flat belt of synthetic material from mcmaster Carr. I also ordered a paper pulley to drive the system. The hammer specs called for 375 hits per minute. The motor is a 3 hp and drives at a rpm of 1160. I did my calculations and ordered the pulley at 3.5" for direct drive. Now the hammer works, but far from optimally. There seems to be a good deal of slippage on the 3.5" drive pulley which is understandable mechanically but dissapointing from a performance standpoint. Does anyone have experience with a direct drive motor to hammer setup with these kinds of ratios or is some type of overhead reduction jackshaft necessary. I would rather direct drive due to a premium on space. Advice