Can anyone give me any advise on what kind of dust extractor to get that can run most of the day for my elite foreman ,modt say you can only run for 2 hours ,thank you all kind regards martyn
We recommend (and use internally) the Fein Turbo 1 https://amzn.to/3trwZoF
Same. It’s very quiet!
Just looked they discontinued
Right that’s why ,I’ll have to order from America because its asking me to change from uk amazon to us amazon
Surprising as it’s from a German company.
Hey all,
dust collection systems like the Harbour freight 2 hp (low end) or the Felder AF 22 (high end) use induction motors that have no carbon brushes, have a high efficiency and run slow and quiet. Even when they are offered for single-phase AC supply, they have induction motors, in this case the induction motor is a capacitor start induction motor.
Shop vacuum cleaners use universal motors with their loud, sparkling carbon-brush commutators, which also often run on much higher speeds than a dust collection system. And they need carbon brushes to be replaced regularly.
However, there was reported that with the use of shop vacs all dust was collected successfully with a Dust Deputy and 70 mm (2½″) hoses here and here
I emailed festool when setting up. They said their vacuums are rated to run 4-6 hours. I’m not sure if they meant continuously.l but that was their answer. So as long as you’re not doing longer carves they should be ok I guess.
My vacuum hose is only 27mm version and kept getting obstructed from larger chips. The vacuum would overheat and shut down. Options were to get a bigger hose and adapt it to my vac or use my existing dust collection system.
I went with my 4” dust collection and it’s miles ahead than my vacuum. Personally I recommend using the tool that is specifically designed for the task at hand.
Just my experience.
I dont find the Fein shop vac to be loud at all.
Hey Michael,
yes some are not loud, because of the housing and the filters. It’s the type of motor that is loud (like the router is louder than a spindle), not forcibly the shop vac as a whole.
Thanks guys for all the replies, looking at the nilfisk attix 50 , there is a few different ones ie the attic 50-01 PC/ attic 50-21 PC EC witch is double the price as the first one ,won’t be on the cnc all day long because I’m just starting so don’t no if it would be better or not to get the attic 50-01 PC witch is £501.34 just don’t want to get the wrong one sorry to burden you guys with this just don’t want to waste money in these hard times . Thanks again for all your advice it is much appreciated, thanks martyn
Hey Michael,
just had a look at the manual of my shop vac: My Festool CTM MIDI I is rated with 70,00 dB(A). It’s the same that Lee Turnbull @TDE uses as can be seen here.
Wow ,I’m glad he was saved it makes you think that it has got to be taken seriously and that’s why I want to get the right stuff ,I’ve got fire extinguisher in the shed and I’ve got the makita router for now but goin to use on small projects till I’m used the machine then I’ll get a spindle motor .thanks for advice it means a lot
Hey Tom,
sorry to disappoint you, but it would have been very surprising if it had a brushless motor or an induction motor. You already can tell this by the fact that it has a speed regulator. If it was an induction motor, to have speed regulation, it would need a VFD internally which would make the device extremely expensive because it would need, at least internally, three-phase electricity, and if it was a capacitor start induction motor, such motors cannot have speed regulation. So of course, and is to expect, this is a universal motor with carbon brushes:
Hey Tom,
Not every universal motor comes with the danger of burning and set your workshop in fire. If this was the case, such motors would not be ubiquitous but forbidden. A universal motor can start to burn if you overload it so that it is slowed down ((see also difference router/spindle) because then it will get too hot and malfunction (it’s also written in Makita manual). That is surely not to expect to happen with a shop vac. But it will be VERY CERTAINLY the case if you use a hand trim router like the Makita RT0701C or RT0702C that is designed for short-time, hand-held usage and you mount it into a CNC and run it for hours, especially with a bit diameter of more than 1/2" (like those big 1½" surfacing bits). That were the conditions when the Makita started to burn which was reported many times in this forum.
By the way, the 43 mm “Euro” mount milling motors for CNCs that are common in Europe and that I consider to be the best milling motor solution for hobbyists and semiprofessionals because they need no VFD are universal motors with carbon brushes too. But I NEVER heard of one of them starting to burn. That is because they are not a Makita hand trim router that is designed for short, hand-held usage, but dedicated milling motors for use in a CNC for 24/7.
Hey Tom,
they told you it was a brushless motor??
I read the manual and the datasheet and they talk of “silent”. I also saw they require you to bring the shop vac to their service once a year. For what would they want that, if not to change the carbon brushes?
Here’s a link that mentions brushless motors
Go to specifications-> All specifications
Hey Ken, hey Tom @Geige, hey all,
ah, I found where they say “brushless motor”. But I don’t believe it. It is a marketing trick. I explained above why it is technically extremely unlikely that they use a brushless motor. Maybe they mean “As we require you to come to our service once a year as per the manual, you will never have to deal with replacing the carbon brushes as we will do it for you”.
Think of, for what would these carbon brushes be for?
Carbon Brush Set-Attix 30/33/44/50 (w/new motor)(ltd supply)
Carbon Brush Set - for all Attix 33/44 models and for Attix 30/50 models with the new (early 2016-on) motor. Nilfisk recommends only one brush changeout before replacing the entire motor as the commutator is not a serviceable part.
– Source: Carbon Brush Set-Attix 30/33/44/50 (w/new motor)(ltd supply)
See also:
-
Nilfisk Attix Series & Eliminator Brush Replacement – Youtube – by Nilfisk Vacuums
Attix 30, 50 and Eliminator Pro II vacuums are now equipped with serviceable brushes, presented in this video as replacements for formally used motors. Motor brushes should only be replaced once as the commutator, which cannot be replaced also begins to exhibit wear (scoring, pits, etc.).
For more information please visit www.nilfiskindustrialvacuums.com or contact customer service at (800) 645-3475.
That sounds as if there was another motor on older models where the carbon brushes were not serviceable.
Further reading
Older motors. I’ll believe Nilfisk’s own current website over a parts site referencing 2016 motors and a 7 year old YouTube video. Many newer cordless power tools are brushless. There’s a whole line of Ryobi brushless tools.