I'm thinking it's time I got me some air tools, and this compressor has come
up for sale (used).
150psi, 33 gallon tank, 5.5cfm. Not sure if it being direct drive and oil
free are big issues...
10 years ago I bought one new. Took it back because it had rust in the
tank. The second one threw the piston through the head after about 5 hour
I would advise against any of Sears oilless direct drive units unless you
are only putting a "few" dollars into the purchase.
Working for Sears, about ten years ago, I remember seeing quite a few
oilless compressors (returned) in the back room with big holes in the side.
But then after a year or so, they seemed to have that problem solved. I
bought one about five years ago and haven't had a problem with it. That
is, other than the noise scares the bejesus out of me every time it starts
up. Wouldn't dare run it late at night if the neighbors lived close. I
still work part time for Sears and I don't remember seeing one returned in
the last two years (Sears Hardware) I think you would find this usually on
sale for $379 (USD) with a tool or two included.
If $499 is the sale price I suspect you can do better with a similar sized
oiled compressor. Oil-less has two issues (with me):
1) Noise - The high pitched sound just makes my hair hurt.
2) Durability - Some will argue but I think a good oiled compressor will
outlast an oil-less 2:1.
I also have some doubts about the 6HP - Sears does wonderous things with HP
I have seen several oil-less machines that were inexpensive enough to
overcome the durabilitiy issue. Use 'em and buy another. This one is a
little too high-priced. I have a 30 gallon/3HP , wheeled, upright CH that
cost a little less than this one. It is oiled and isn't quiet by any means
but the sound is tolerable. I have also seen slightly smaller 2-3 HP Oiled
Husky's at Home Depot around $300. Also, you said you wanted to start
getting some air tools. Check the big box stores for Oiled or Oil-less
packages that include compressor and a variety of tools at a good price. We
helped our daughter purchase a compressor for the son-in-law last Christmas.
Got a 26 Gallon wheeled upright Oil-less Husky (that is what he wanted) and
a pile of starter tools, hose, fittings, flex hose, etc for around $300.
(Just looked at your linked ad again. Didn't notice the "Sears Canada"
until now. The price might not be out of line up there. I still have
reservations with Oil-less.)
Admittedly not an oilless compressor but I got an "air america" compressor
made by devilbiss from the porter cable outlet in atlanta with a 6+ HP motor
for $280. It is virtually thesame as the sears unit I have been using for
the passed 20 years alsom incidentally made by devilbiss .a nice machine in
Great likelihood is that your air compressor is not anywhere close to
Does your motor weigh more than 100 lbs?
What is the voltage and amps for which the motor is rated?
My guess is that 13 scfm at 40 psi -- a very low PSI -- is equivalent
to about 2 honest horsepower.
I have an honest 3 HP compressor, with a heavy Baldor motor etc, on a
80 gallon tank, and could not fit the motor and pump on a puny 20-30
news:CyeKe.2162> Great likelihood is that your air compressor is not
anywhere close to
More than likely the Sears rating is the same used by most of thier
products. The 6.5 hp rating probably compares to amp draw of a true 6.5 hp
motor just before the Sears unit stalls from overload. Basically how much
amperage it draws as it stalls and hopefully blows a breaker. And like you
said, probably really 2 hp or less.
What a crock , As far as I know sears do not make their compressors
,devillbiss does ,probably the largest compressed air tool proveyer in the
country. In addition to my knowledge the compresor division of devillbiss
has been bought out by porter cable ....Again the hp ratings for all
compressors have been redefined, not only sears......I am no great fan of
sears having had several run ins with them but for heavens sake give them a
fair shake else criticise them all ....
I would not single out Sears, yes. All manufacturers and retailers who
sell compressors with phony "peak horsepower" ratings, are scum. Peak
horsepower means nothing when it comes to compressors, because
compressors have large tanks of air. A few seconds at "peak
horsepower" before, like Leon said, the breakers blow or the motor
pops the overload, mean nothing whatsoever. For compressors, only
continuous output matters.
I dunno, perhaps it matters for a saw or some such, but you may be
completely right. I hate phony HP ratings, they piss me off to no
end. I thought that the practice of assigning phony HP ratings to
compressors ended aftar a big class action lawsuit against DeVilbiss
and others, but, apparently, that is not the case.
Fortunately, electric motors have honest nameplates on them that list
their amps. Multiply amps by volts and you get watts. Divide by 751
and you get true HP.
Close but no cigar.
AC electric motors are inductive not pure resistive devices so you must
also include power factor in the calculations which is not a simple
matter without test equipment.
BTW, there are 746 watts per horsepower.
I've had a Sears belt-drive, oiled, 20 gallon compressor since 1988.
Aside from woodworking, I painted 3 car (restorations) projects with
Sears stuff is cheap. I don't know how it would hold up under all day
usage. Mine probably has 30 hours on it total time.
If you are running power tools or spraying finishes you want a water
separator. An inline oil mister is good if using power tools. And above
all, get a 220 unit if your house is wired for it. The units run much,
Calculate capacity (ie., hp needs) by matching the highest air gulper
in your tool box. Usually, that is an air sander. Paint guns use
relatively little. Impact guns are medium users. The new HVLP guns
don't even warrant a 220v compressor, so save money.
The nice thing about any compressor, whether it be cheap or fancy, you
can unbolt any component that fails and put on a new one. Such as the
pump unit, controller, motor.
The Grainger catalogue allows you to virtually build your own from
components. I have a small, diaphram compressor (110) my wife uses with
her airbrush art projects. But the big one pumps up my bike tires, and
powers my air ratchet on all car repairs, as well as furniture repair.
Sears compressors, overall, are pretty low quality. Have you considered
getting a used unit?
You can get a lot more compressor for $499 than this one. It looks like its
specs are inflated more than Sears usually does. I base this on the fact
that its 120 volt. There is only so much capacity you can get out of a 120
volt motor. I think they have way overstated the capacity of this
compressor (cfm). I don't pay any attention to the horsepower ratings.
These type of compressors (oil free, direct drive) are noisy! I know I have
one. My next compressor will be a cast iron, probably one of the speedaire
models from Grainger. They have been making the same basic models for about
You will need a tool oiler to run air tools. If you are going to run air
tools like a grinder or sander, I think you'll need more continuous
capacity. Speedaire makes a model that has not changed in 40 years. Its
rated at 10.3 cfm at 90 psi for $519. Its 220volt only.
Way overpriced in my opinion ,seemy earlier post about the air america unit
recently I believe most manufacturers [including sears} have revised their
hp ratings see HP units for instance .The critical figure in all honesty is
the scfm at 90psi for most average compressors it needs to be 10 scfm or
To rum an air buff or sander you will need even more than 10 scfm at 90psi
and than you are talking many bucks....mjh
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