HF vs Griz "2 HP" dust collectors


First of all I did searches of this group and red all the posts I could find. Many others have said these things look very similiar - see below HF Girz Motor 2 hp 110V, 14 amp 2 hp 220V, 12 amp Bags 30 micron 2.5 micron CFM 1600 1550 Shp Wt 145 123 Inlet 6" or 2 ea 4" 2 ea 4" RPM ? 3450 price 150 295 impeller ? 12"
The HP and CFM ratings are both probably very inflated. The weight difference could be accounted by 110 vs 220 V motors - anybody know?
I want to put a home made barrel chip collector in line using 6" pipe. Some have said when the Y is removed from the HF unit-is there a 5 or 6" opening. I doubt if one would be able to open up the HF plate to 6". Any thoughts.
By the way - these things look like they came out of the same factory - anybody seen them both in the flesh. Really interested in the 5 vs 6" inlet.
thanks
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I have the HF. When the Y is removed, the opening is 5" not 6". I am really happy with this unit. I can also tell you that my unit came shipped with a massive 20amp motor. It is clearly marked 20 amps, not 14. I'm not sure why that happened, I'm pretty sure the unit is typically made with a 14 amp motor as you've indicated. Nonetheless, my unit (particularly with that motor) has some impressive suction. It has functioned very well since I purchased it. I have not upgraded the bags because my unit sits in a remote room, but others have strongly suggested the upgrade on the bags. Like you I keep meaning to add an in-line separator, but haven't done it yet. GOod luck
butch wrote:

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I have the Grizzley. The 2x4" inlet hides a six inch inlet, which is how I have it installed in my perimeter system.
Works great and very well built. I replaced the standard bags (30 microns at the time) with a 1 micron bag from American Fabric Filter.
Joe

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Joe: Did you get your DC recently? What did you use for pipes on your perimeter system. The white PVC drain pipes?
THanks
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Not that recently. Had to think about; guessing its been five years. Its possible they changed it, but what was strange was that the Grizzly ad at the time mentioned the "hidden" opening was 5", so once I started setting up and discovered it was six, I had to redesign (happily, in this case) the system.
I used 26 ga HVAC ducting from a local hardware store (Ace Hardware franchize), along with long radius elbows and Y fittings from Oneida Air. I start with six inch, gradually reducing to 5 and then 4 inch along the perimeter to try and maintain even pressure. The Borgs only carry 28 and 30 ga, don't use that crap. Get yourself a good sheet metal crimper ($10) and a pop rivet gun, and you are in business. I sealed all the joints with clear silicone. My blast gates are shop built, but I don't know if I'd go through the trouble to do that again.
Joe

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Yeh, the weight difference is the 220v motor. Those extra 110v are pretty heavy. (most induction motors can be wired either 120v or 240v, so there is no difference in weight; but you were just kidding anyhow, no?)
If one is 14a-110v and the other is 12a-220v, then the second is is 70% more powerful than the first. That probably accounts for the price difference (as well as the better bag), and maybe the weight difference as well. My DC is 6a-240v and it is underpowered, so the even weaker HF would have to be nearly useless.
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I have the HF dust collector, it exceeded my expectations! It is a very good unit for the money. Greg
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IMHO the Grizz 1-1/2 HP collector, (G1028Z), is probably a better comparison to the HF 2 HP collector, (45378). Both have 120 volt motors. The Grizz is a 1-1/2 HP motor where I believe HF is really a 1-1/2 HP motor that is over rated. Greg
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The most important difference is the impeller size. Grizzly is 12", HF is about 10".
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As was indicated earlier the hidden inlet is 5". It would be possible to enlarge the inlet, and I believe there is a web page talking about someone doing it.
A photo of the impeller is here:
http://alan.firebin.net/images/hf_dust_impellar.jpg
This past weekend I ran the collector extensively with a power monitor hooked up to it.
Max amps I could draw was 8.45 unless it was starting up, which can hit 16+ for an instant. With 20' of flexible hose, the amps barely increase.
In comparison I have a grizzley 2hp motor on my Jet CS saw. While cutting 45 degree bevels in plywood for french cleats I observed amp usage in the 16's nominally, and over 20 just before stall out.
Also running the collector for 90 minutes used about .7 kwH. Which around here is about $.04. So one could use it connected to a dust filter without going broke.
There is room in the impellar housing for a larger impellar, and looking at Jet's parts diagrams they are not terrible expensive.
I upgraded mine with the Wein cartridge.
Alan
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made changes...
BUT that 2 Hp 220 v motor is a BIG HEAVY SUCKER and I am not kidding.. I removed the "Y" fitting years ago and used a rubber reducer to bring the outlet down to 4 inches since I use 4 in PVC pipe... But to be honest I seem to think the outlet was 5 inches not really sure...and even if I was sure it is an older machine and things change...
Impeller size is more important then HP ratings imho ...
Gut feeling is go with the 220 V unit... While I am not in love with my Griz It works, and has not given me a single Hint of a problem in all these years...
I do have a trash can seperator hooked up now....and again being honest I think it lowered the "suction" down by a good margin....but it still does what I want ... just do not leave any 1"x1"by 3/4 " cubes sitting on the top of the drill press table within 3-4 inches of the DC hose when you open the blast gate... they will not be there when you turn around....sucked right up and now are in the trash can on the other side of the shop...
Bob Griffiths blast gate...because they will be sucked up and in the trash can real fast..
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impeller.. *g*
mac
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I guess budget and availability of 220v would be my considerations..
I like my HF DC a lot... I took off the "Y" and run 5" from the DC to the cyclone, then have the "Y" on the other (inlet) side of the cyclone... It didn't really make sense to me to build a cyclone and then have one line using it and one not using it..
mac
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On Mon, 14 Mar 2005 09:57:05 -0800, mac davis

If the one line only went to a sanding table or something like that I could see it, but not really worth doing.
-- "We need to make a sacrifice to the gods, find me a young virgin... oh, and bring something to kill"
Tim Douglass
http://www.DouglassClan.com
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wrote:

I had it going to the belt/disk sander, until my wife had a piece of burl come apart on her and a couple of pieces bounced off the impeller...
mac
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Today I picked up a delta step reducer so I could connect my 2.5" shop vac hose to the dust collector since my ancient shop vac died last week.
With 20 feet of 5" flex hose and 10' for 2.5" flex hose, the HF has more suction than the shop vac did, is quiter, and has a much larger bag ..)
SO now I can reach all over the shop and actually stand to have a vacumn running without my hearing protectors on.
Alan
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I tried that and though the DC was happy, my plastic garbage can flattened itself out when I went down to 2 1/2" hose... I still use it for some floor stuff, but open the gate on the BS first so the can doesn't collapse..
mac
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