Eaton Compressor
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ok so I found out the ratings on this Comp is in SCFM (Doh! should of paid more Attention) the polisher is rated at 34 SCFM @ 90PSI and the Compressor rated Output is 17 SCFM @ 175 PSI or 19SCFM @ 100 PSI
so I I guess it works as it should I will test some DA’s later tonight and give you all some run times
Yeah, those air polishers take some massive amounts of air…
To be honest I’ve never used one I liked. They just don’t have the guts behind them and the wind tunnel of air that comes out of them could drive you up the wall.
Not to mention they’ll freeze your hands off.[quote=”RatStang” post=19654]I hate to tell you this Ding, but Blove’s puts out nearly identical CFM as yours. š
Just makes you look like you’re trying to compensate with the bigger size. š.[/quote]
I was talking about size not performance :blush: :p :pI have a 7″ polisher – and I had to read the fine print as well. It says 15CFM…. AVERAGE. MY CP takes 26 CFM when in use. My little 10 CFM compressor doesn’t have a chance….
I still think that’s a nice compressor, for the money or not, considering the pump and motor and tank are all decent quality with a nice warranty.
oh… just read that you found that out. No we know…
Ok here it is Most compressor’s are NOT rated in CFM but SCFM Now before you all freak out I will explain as this was my issue with my polisher because I didnt pay attention and because the marketing world is a bunch of liars
1 CFM is 7.11764 SCFM
Eaton Correctly states that the compressor output is 19 SCFM @ 100PSI which is 2.66 CFM @ 100psi
so to run my polisher I would need a 10hp compressor rated @ 35 SCFM @ 175PSI just to run my one polisher that has a 4.8 CFM rating or 34 SCFM
so all of us who thought that the sticker and the ads we look at on our compressor States it puts out any number in CFM is Wrong and a Lie all compressors I have looked at online are all rated in SCFM but all the ADs I read say they are in CFM
so we will use bob as example sorry bob
to have a 10 CFM compressor it would be rated as follows 20HP 71CFM @ 100PSI Im sorry if I offended anyone but thats how it is
Heres the True rating of the 10CFM Compressor 1.4 CFM @100PSI again im sorry but facts are facts and thats why the air tools kill the compressors we have because we size our compressors to our air tool needs but they are rated in different ways, we need to have a standard way to rate Compressors as this rating crap has gotten way out of hand and the misuse of the CFM in Place of SCFM is Complete BULLSHEET
[quote=”Wydir” post=19698]Ok here it is Most compressor’s are NOT rated in CFM but SCFM Now before you all freak out I will explain as this was my issue with my polisher because I didnt pay attention and because the marketing world is a bunch of liars
1 CFM is 7.11764 SCFM
Eaton Correctly states that the compressor output is 19 SCFM @ 100PSI which is 2.66 CFM @ 100psi
so to run my polisher I would need a 10hp compressor rated @ 35 SCFM @ 175PSI just to run my one polisher that has a 4.8 CFM rating or 34 SCFM
so all of us who thought that the sticker and the ads we look at on our compressor States it puts out any number in CFM is Wrong and a Lie all compressors I have looked at online are all rated in SCFM but all the ADs I read say they are in CFM
so we will use bob as example sorry bob
to have a 10 CFM compressor it would be rated as follows 20HP 71CFM @ 100PSI Im sorry if I offended anyone but thats how it is
Heres the True rating of the 10CFM Compressor 1.4 CFM @100PSI again im sorry but facts are facts and thats why the air tools kill the compressors we have because we size our compressors to our air tool needs but they are rated in different ways, we need to have a standard way to rate Compressors as this rating crap has gotten way out of hand and the misuse of the CFM in Place of SCFM is Complete BULLSHEET[/quote]
I really think you got your math screwed up there somewhere… or believed some crap on a forum :rock
Standard Cubic Feet Per Minute is CFM at a slightly varying standard of temperature and humidity. I say slightly varying because different manufacturers pick different numbers like 78degreesF or 80degreesF, at 14.3 or 14.7 atmospheric pressure. It’s only way off if you live way above or below sea lever, have very wet or very dry climate, or very hot or very cold temperatures. SCFM would be a better spec if taken where i live! cold air gets more molecules in the tank!
It’s only off a few percent at best.
Im sorry but your Dead wrong thats why its such a problem everybodies brain washed and when the true math comes out no one can handle it do the math and you will see
my snapon air polisher is rated at 4.8 CFM if your knowledge was correct my compressor would be able to handle it no problem
but this is how it is 4.8CFM is 4.8 x 7.711764 = 34.16 SCFM its right there on the snapon site look it up they give both ratings side by side
this is Why this is such a big problem Because they Interchange the CFM rating with the SCFM rating and its Not as close as you believe
from Snap on website
Product Specifications
Stock # AT450BP
Name Polisher, Air, Heavy Duty, Angle, 7″
Price** $321.30
Country Of Origin China
Vibration Level, m/sĀ² <2.5
Rated Power, hp (kW) 1 (.74)
Weight, lbs. (kg) 5.5 (2.5)
Length, inches (mm) 15.7 (400)
Sound Level dBa Pressure 84
Description 7" Angle Polisher
Recommended Air Pressure, psig (kPa) 90 (620)
Air Consumption, free speed, cfm (scfm) [l/min] 4.8 (34) [136]
Air Consumption, working, cfm (scfm) [l/min] 4.3 (31) [121.8]
Horsepower, HP 1.0
Free Speed, RPM 5,100
Sound Level, free speed, dBa 84
Disc Size, Dia., inches (mm) 7 (177)
Spindle Thread, inches 5/8"-11 UNC
Air Inlet Thread Size 1/4"-18 NPT
Recommended Hose Size, inches (mm) 3/8 (10) ID Min.
Overall Length, inches (mm) 15.75 (410)
Height, inches (mm) 4 (102)
Spanner Wrench (opt.) AT450-50
Replacement Pad/Disc AT450-46HWhere the heck did you find 7.711764 as the ‘differential of wrongness?’ I have been looking around to see if I was badly mistaken and In can’t find anything to back this up.
http://www.pdblowers.com/t6-scfm-standard-cfm-vs-acfm-actual-cfm.php
The biggest items that stand out to me on that Snap On spec sheet are:
Price- $321
Country of Origin- China:wak
:pcorn: :pcorn: :pcorn:
Mines still bigger :whistle:
There is no set in stone conversion of cfm to scfm. Temperature and humidity all factor in.
:agree there is no set conversion but im going off of the tool air consumption it has both ratings side by side CFM and SCFM and thats My Point and We are Talking CFM VS SCFM no where did I mention ACFM its like your thinking apples, pears, and bannanas
I could care less if it was made at your house ( unless you made crappy tools hahaha )
I am just saying if you need to buy a compressor to run all your tools you need to know what to buy without Under Sizing ( I to thought it was a very close Conversion) and from my test with air tools I was way wrong
Q1 = Q2(p2/p1)(T1/T2), this is the formula to get CFM to SCFM
Q1 is scfm of compressor, Q2 is cfm of tools/system, p2 is operating pressure of tools/system in absolute (psig + 14.7), p1 is inlet pressure to compressor (14.7 psia), T1 is temperature of air at inlet in rankine (fahrenheit + 460), T2 is temperature of air at tool/system in rankine. your case if temperature is constant:T1 = T2
Q1=3.4(90+14.7/14.7) = 24.2 scfmthis is what I found to show you so you can do some math
Oh and some of the tools are listed in SCFM to thats why the number is so high do you really think it takes 25 CFM to run a Sander?
Basiclly from what i have seen online is the better companies will rate there tools and compressors in SCFM so you can figure out what size you will need just
DO NOT THINK THAT SCFM IS THE SAME AS CFM (this is where I Screwed Up)I guess I tried to explain but its worthless you all know how it is and when you buy your CFM compressor it will work and produce CFM
[quote=”Wydir” post=19676]
2. $1700.00 is considered a cheap compressor[/quote]
I did not want to hear that :unsure:
I only want to spend about 500$ when I put one in my garage, but on the other hand I won’t really need anything uber fancy so hopefully I’ll be able to stay within budget. I don’t do any work sidework in my garage although I would like to someday
[quote=”dcturcotte” post=19709][quote=”Wydir” post=19676]
2. $1700.00 is considered a cheap compressor[/quote]
I did not want to hear that :unsure:
I only want to spend about 500$ when I put one in my garage, but on the other hand I won’t really need anything uber fancy so hopefully I’ll be able to stay within budget. I don’t do any work sidework in my garage although I would like to someday[/quote]
Buy a used industrial one. They can be had pretty cheap. We sold a nice 10HP industrial Ingersoll Rand with aftercooler for $500. It was 3-phase, that was the only drawback for someone wanting it for their house. That thing would have run for 40 more years.
I would rather have an old used curtis, ingersoll, quincy, dev-air or saylor beall than most made today.
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