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Post by Drummond Island Rocks on Feb 9, 2012 12:59:00 GMT -5
I just bought some used equipment and theres a gemlap all aluminum 6" trim saw that I need to put a motor on. I have a nice 1725 rpm 1/3 hp ready to go but need to know what speed to run it at to get the right pulleys. Do I go by the shaft speed which if the pulleys were same on motor and saw would be 1725 rpm or is there a formula for figuring rim speed on the blade? It came with a nice diamond blade on it. thanks for reading, any advice is appreciated.
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Post by johnjsgems on Feb 9, 2012 14:19:53 GMT -5
Depends on blade. Usually 1725 works well. The 303C and 301 new style will work a little better speeded up a little. Most blade speed charts go by pulley diameter (2" on each side equals 1725) without worrying about actual speed at blade rim.
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Post by Rockoonz on Feb 10, 2012 0:32:26 GMT -5
Covington sez 2200 rpm. www.covington-engineering.com/information.htmBarranca sez faster. www.barrancadiamond.com/home/tec_speed.htmlThe Lortone LU6X combo unit next to your saw in the pic has a 6 inch saw that will need to run at 1725 since that's the correct speed for the grinders. I think I would run a 4" pulley at the motor and a 3" at the saw arbor (~2300 RPM) and use it with a sintered blade like a 303c. Cool flat laps, the first thing I cut cabs with looked just like them. Lee
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Post by Drummond Island Rocks on Feb 10, 2012 6:19:41 GMT -5
Thanks guys thats one problem out of the way! Now I just need to slow down and figure out how I will configure the combo unit and flat laps with the proper discs and wheels.
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Post by johnjsgems on Feb 10, 2012 21:36:29 GMT -5
If you have to replace the 2.5" drum on the Lortone, try installing a belt first. It is a chore getting the belts on/off. You might consider a 1.5" drum as a replacement. One 1.5" diamond wheel and one drum pretty much fills the available space. It originally had a 6" spin on polish head as well. Nice looking equipment.
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