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Post by tortuga on Jun 2, 2010 16:36:52 GMT -5
I have a piece of countertop that I'm going to mount my 10" and 5-ish inch saws on. However, being the hopeless newbie that I am, I have some questions about it. I know these saws should be spinning at a certain speed to protect the blade and such. I have no idea what RPM's they should be at, etc. I do have a belt and pulley that came with the 10" saw. The small saw did not have a motor or belt with it. My intention is to just mount both to a formica countertop, and just swap the 1/3hp motor between them so I don't have to buy another motor right now. However, my questions are these: Does the motor need to be mounted a specific distance away from the rear of the saw to ensure the correct blade RPM? What is the correct blade RPM for these saws? The 10" is a HP E-5, the small saw is (as far as I know) also an HP, though I'm not sure if it's a 4, 5 or 6 inch saw. I have another thread trying to ID this saw with more details ( bit.ly/9c7gCY) How would I go about knowing if the blade is too fast or slow when I get them up and running? I'm going to be investing in some MK-303 blades and I don't want to trash them.
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Post by jakesrocks on Jun 2, 2010 17:15:44 GMT -5
Most motors spin at 1725 RPM. That's the correct speed for a 10 " saw. Use the same size pulleys on the saw and motor. The distance between the saw and motor makes no difference. For the smaller saw, if it is a HP, they were built before the advent of super thin blades meant to run in water. I suspect that 1725 would be correct for that saw too. If you're going to use one of the thin blades, they need to spin at higher RPM's to stiffen the blade. Use a larger pulley on the motor for that. ---- Don
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Post by deb193redux on Jun 2, 2010 17:30:08 GMT -5
you want a mount that can be easily undone for cleaning
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Post by johnjsgems on Jun 2, 2010 17:41:27 GMT -5
Diamond Pacific and Covington both have speed charts for blades and pulley charts for selecting pulleys. The 10" should run at 2200 or less. The smaller saw can turn faster (4" 5500, 5" 4500, 6" 3800). You can look up the blades on MK or Barranca Diamond websites and read their maximum speeds for the blade you buy. I didn't tell you this but the 303C and new 301 blades can work fine at faster speeds but will dull faster and require more frequent dressing. The 1725 speed would be good as mentioned before. If you have a 2" pulley on the saw use a 2" on the motor as well (equal sizes for 1725 rpm). Increasing motor pulley increases saw speed. Increasing saw pulley slows it down. Lower speeds will be kinder to the saw arbor bearings as well.
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