Fueled by Caffeine
Fueled by Caffeine MegaDork
11/29/15 3:45 p.m.

Found one of these for sale used. The scfm@90 is low but they are supposed to have a 60db running noise level.

Looks like a Chinese dental compressor?

What do you think?

https://www.amazon.com/dp/B00889ZYPQ/ref=cm_sw_r_other_awd_ls0wwbYMQ254F

Toyman01
Toyman01 GRM+ Memberand MegaDork
11/29/15 4:19 p.m.

That's pretty quiet. For a small shop it would be ideal.

BoxheadTim
BoxheadTim GRM+ Memberand UltimaDork
11/29/15 4:59 p.m.

I guess it depends on what you want to use it for. If you're trying to run anything like an HVLP gun, an air drill or a saw, a compressor with this size tank is basically going to be perma-on.

Hal
Hal SuperDork
11/29/15 7:44 p.m.

Tank is way too small for anything but a nail gun. And in my experience the oil free compressors make more noise than the equivalent size oiled type.

44Dwarf
44Dwarf UltraDork
11/30/15 10:59 a.m.

Looks to be rotary vane type so yes it will be quiet but being oil free it will wear out fast the fiberglass vanes are easy to replace if you can get them.

Fueled by Caffeine
Fueled by Caffeine MegaDork
11/30/15 11:05 a.m.

the quietness is interesting to me for filling tires, etc. More and more I'm switching to lithium ion tools to do most of my heavy lifting. The big impact is electric. I don't paint so, a large compressor is not needed.

93gsxturbo
93gsxturbo Dork
11/30/15 11:46 a.m.

I ran an IR 2135Ti impact wrench on a pancake compressor for a few years. Worked fine, would do 3 tires before needing a recharge. Great for all your normal wrenching needs. Forget it trying to run any air drills, die grinders, etc though.

Fueled by Caffeine
Fueled by Caffeine MegaDork
11/30/15 1:06 p.m.

also I found one running and used for $70.

Tralfaz
Tralfaz Reader
11/30/15 5:49 p.m.

I have one if these

California Air Tools CAT-10020

Very nice very quiet. I can spray my hvlp gun (cabinetry) with it for individual panels and such in the field (touch up/install). Obviously not for big work.

Mine is well built and a solid performer

Recommend.

jere
jere HalfDork
11/30/15 9:55 p.m.

I use old $20 1hp sears twin piston compressors with oil and belts. They are 40+ years old but are pretty quiet on a scale of compressors.I cant hear mine at all in the garage as the motor and compressor are in the basement of the house in an enclosed space. Just have to remember to plug and unplug when not/in use.

60 db is still above the point of causing permanent hearing damage just food for thought as well.

Fueled by Caffeine
Fueled by Caffeine MegaDork
11/30/15 10:09 p.m.
jere wrote: 60 db is still above the point of causing permanent hearing damage just food for thought as well.

60 db is the level of a normal conversation. I'd check your data source.

jere
jere HalfDork
11/30/15 10:23 p.m.
Fueled by Caffeine wrote:
jere wrote: 60 db is still above the point of causing permanent hearing damage just food for thought as well.
60 db is the level of a normal conversation. I'd check your data source.

Moderatly severe What a google search is telling me. "55db hearing loss"

jstand
jstand HalfDork
11/30/15 10:40 p.m.

In reply to jere:

The chart you linked to is for evaluating the damage to hearing. The values are the sensitivity lost, so if you lose 55 dB of sensitivity it is considered severe hearing loss.

This shows the effect of environmental noise:

Fueled by Caffeine
Fueled by Caffeine MegaDork
11/30/15 11:01 p.m.
jere wrote:
Fueled by Caffeine wrote:
jere wrote: 60 db is still above the point of causing permanent hearing damage just food for thought as well.
60 db is the level of a normal conversation. I'd check your data source.
Moderatly severe What a google search is telling me. "55db hearing loss"

That's hearing loss range. I lead a project to get my plant below 75 db across the board and remove mandatory hearing protection. 75db was our own internal metric threshold for PPE. OSHA will allow you to listen to 85 db constant for 8 hours straight(time weight average) before they start getting militant.

https://www.osha.gov/pls/oshaweb/owadisp.show_document?p_table=STANDARDS&p_id=9735

foxtrapper
foxtrapper UltimaDork
12/1/15 5:19 a.m.

If you want to fill tires quietly, use a 5 gallon portable air tank. Cost about $20.

jere
jere HalfDork
12/1/15 7:55 a.m.

Whoops guess maybe i had that wrong and or was too hasty with that link. I could have sworn i saw those numbers other places before.

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