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cnc dust collection5/20
I'm a new owner/operator of a flat table cnc with a 10hp atc spindle. It has a 4" dust collection port which I hooked up to a 1 hp, 2 bag dust collector that I wasn't using for anything else. It picks up anywhere from 50 - 75% of the dust, depending on the operation. I'd like to improve that, so I'm looking at some new options. I have 4 other cyclones in my shop that are 3 - 10 hp, but they're all too far away from the cnc, especially considering the 4" hose limitation.
Since I'll probably be buying a new collector dedicated to the cnc, will a 2 hp unit be sufficient? Would a 3 hp unit be appreciably better if my hose is limited to 4"?
I would go to 3HP and 6". Mod the pickup if you have to.
It's never enough...
Tool design and cutting strategy also has a big influence.
I have a 10 hp and 8". It's not even close to enough. Best situation I ever ran was a 100 hp collector, and it still left crap everywhere.
Thanks for the responses. I have a 3hp unit with 5" ducting I could divert for a test run. I think I"ll try that first before I buy anything.
Just hooked ours up to a 5hp blower -9" inlet to a custom baghouse, Works decent.. We have a 7.5hp cyclone on its way to replace the 5hp blower. I'll report back once installed.
Like the other guys said, bigger the better
For us a lot would depend on your shoe. We pick up from our 10hp spindle with a 3HP cyclone sitting less than 5' from the cnc and ran 7" to just above the cnc, dropped to 5, and reduced to 4 right at the shoe. We have a bristle style shoe on it and the DC will suck the bristles into the port basically negating the extra HP. We installed some thin plastic to help, which made a world of difference, then opeted for a few spacers that have to be manually installed/removed which make a world of difference.
The issue to me seems to be if you dont have a house/enclosure around your spindle, and you dont have an actuated shoe, your only option is the 100HP route to basically create a bubble of suction around the spindle that will suck a framing hammer our of your hand (or a co-worker) into the DC, or install some air jets to blast material toward the port, or just deal with the mess on certain operations.
Some of our x-y cuts on sheet material are just abysmal. Working on a fixture where the dust shoe is up off the board or hanging off the end of the machine, forget it.
We've got a 20hp, 9,000cfm that serves the beam saw, bander, router and doweling. 6" duct, 5" hose to router spindle. There are two air blowers on the tool, brushes around the bit, and it does well picking up from the surface but the chips that pack in the kerf, from using a compression bit, don't pull out. The chips fly when cutting along the outside edge also. It doesn't seem to make any difference whether the gates are open to all machines or just the router. Wish we had the push off system.