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Thread: Donaldson Torit dust collector?

  1. 02-04-2020, 7:40 AM #1
    Dan Coker
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    Donaldson Torit dust collector?

    I recently came across a Donaldson Torit MC-500 dust collector for what appears to be a good price ($350) and was wondering if any of you guys would recommend this unit for a wood working shop? It appears to me that these are marketed towards markets other than wood working. The thing that concerned me is that it is only a 1hp machine but I know that horse power is not always a direct indicator of CFM. The guy that is selling it told me he thought it has around 1,600cfm but wasn’t a 100% for sure. I did a brief search and couldn’t find the CFM specs for it. It is a 3 phase unit but that is fine as I have 3 phase power. It has all of the parts and accessories with it including the filters. If I buy it I would like to run a 6” main trunk line about 30-40ft with three drops reducing down to 4” at the machines. Machines include table saw, old 16” Dewalt RAS and jointer. Would this unit work with this scenario? Any advice?
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  3. 02-04-2020, 9:13 AM #2
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    David L Morse
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    No, with those specs it won't work. At that HP rating and maximum flow rate the fan curve will look more like a HVAC blower than a dust collector. The available pressure will be very low. It will be unable to push much air through your proposed ducting.

    It might be useful dedicated to a miter saw hood or a downdraft table with a very short duct sized to match the inlet.

    Edit to add: You might want to check the price of replacement filters too.
    Last edited by David L Morse; 02-04-2020 at 9:25 AM.
    Beranek's Law:

    It has been remarked that if one selects his own components, builds his own enclosure, and is convinced he has made a wise choice of design, then his own loudspeaker sounds better to him than does anyone else's loudspeaker. In this case, the frequency response of the loudspeaker seems to play only a minor part in forming a person's opinion.
    L.L. Beranek, Acoustics (McGraw-Hill, New York, 1954), p.208.
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  4. 02-04-2020, 9:18 AM #3
    Frank Pratt
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    1600 cfm is fantasy, even with no ducting & filters removed. The low power and long run of duct means that it will be inadequate.
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  5. 02-13-2020, 10:51 AM #4
    Brian Backner
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    If you ever plan to use a sandblasting cabinet, buy that beast and squirrel it away. Few units are better for clearing the air in a blasting cabinet than the smaller Torits (they come in power up to about 5hp for this usage). I have a 2hp/3P VibraShake that is fantastic - I run a single gun at 15cfm/80psi in a 6' cabinet and never have vision problems due to dust.

    Donaldson also makes huge bag houses for woodworking factories - I saw one up in Lowell, MA several years ago that was 2.5 million CFM (yes, millions) channeled through 36" main ducts up to 1,200 feet long. Was surprised I didn't see workmen and machinery chained to the concrete floor to keep them in place.
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  6. 02-13-2020, 12:49 PM #5
    Andrew More
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    Pretty sure they outlawed chaining down workmen during the 60s, but I believe some parties are arguing for it's return.
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  7. 02-13-2020, 11:02 PM #6
    Mark McClurg
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    That model according to this ebay link is a Model 500 because it is 500 CFM!

    https://www.ebay.com/i/152828986993?...RoCwQsQAvD_BwE
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