compressor from harbor freight

Old 09-15-02, 08:18 PM
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compressor from harbor freight

Not sure if ratings they advrtise are possible.
A 4.5 hp compressor that produces 4.4.CFM at 90psi and 11.1 CFM!!! at 40psi
I don't trust this guys much so i thought i'll check with the pros...
A similar ratings Husky compressor from HD is rated at 6.6cfm at 40 and 5.8 at 90.

Old 09-16-02, 02:50 PM
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Compressor ratings

The guys that come up with these ratings are probably the same ones that come up with ratings of 100 watts of music power in a battery powered ghetto.
If you look at the tag on the motor of these compressors you will likely see either nothing or SPL in the box for HP rating. SPL stands for special or non standard rating. Also you may see "peak" in small print under the HP rating painted on the tank. This is the maximum HP the motor will develop either while starting or the motor stalls out. The proper rating is one that the motor can develop while in continuos operation.
I have a 3 hp on my compressor that draws 28 amps on 120 volts! On 240 volts that I run it on, it is a manageble 14 amps.
What you should only concern yourself with is the CFM rating at 100 psi, which is what most air tools are rated at.
Also cast iron, oil lubed piston type tend to be the most reliable.
Old 09-16-02, 06:05 PM
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Thanks GregH - this helps a lot!
Old 09-17-02, 07:11 AM
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Also note, most everything from them is made in China, usually a sign of JUNK! Spend a few dollars more and buy US, European or Japanese.

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