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Old 03-22-2006, 11:21 AM
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Air Compressor flooring

Hi, just a quick question about air compressors. Picking up a Craftsman 80 gallon, 2 stage, 5.5 hp this Friday and was just wondering if this compressor should be set on something or just the concrete floor?

Thankx

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Old 03-22-2006, 11:26 AM
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I mounted my IR compressor on small pieces of a very thick mud flap under each foot (harvested the mud flap off of a tractor trailer set up) and bolted it to the floor. It does a nice job of eating up any vibrations. Just my .02

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Old 03-22-2006, 12:27 PM
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I mounted mine on four body mounting donuts (rubber cushions) I had salvaged when I took the body off an F-150 donor truck. Seems to work pretty good. As I recall my installation manual recommended some sort of rubber insulation between the floor and the legs.
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Old 03-22-2006, 08:04 PM
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Used 4 square rubber furniture cushions that I picked up @ the local Big Box Store. They worked nice and I have that Sears compressor also. I used fender washers to level any low spots.
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Old 03-22-2006, 08:10 PM
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Mine is sitting atop the 2x4s that it came shipped on, which now have rubber swivel caster wheels under them. That was a great addition to keeping everything off the floor.



In a while, Chet.
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Old 03-22-2006, 08:17 PM
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For my 5 horse 80 gallon vertical, I used a piece of 3/4" plywood.
I used concrete screws to screw the plywood to the floor and then used some short lag bolts to bolt the feet of the compressor to the plywood.

I've done it this way a couple of times and it is easy to do and has worked out fine.

I have also found that the having the plywood attached to the feet makes the compressor able to slide on the floor if it ever has to be moved.
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Old 03-22-2006, 11:00 PM
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Im thinkin' its necessary to have it anchored/bolted in the floor somehow like Roger 1 was saying, well mainly because i'll have allot of piping, I just put 2 pieces of ply on each side and a thin 4" square rubber piece under each leg without being secured to the floor yet. Seems like an important thing to do. Maybe I'm just too paranoid.

Can anyone help describe how you anchored the bolts into the concrete? I figure you have to put some small amounts of quickcrete or something like that to finish it off?

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Old 03-22-2006, 11:05 PM
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I left mine in the box it came in . I put it on top of a set of 9 ft tall steel legs shaped like a pallet rack. I stacked an engine on the shelf so the wind wouldn't blow the rack over when I opened the front door. It is very quiet. Before that we had a 7 hp upright that was noisy as the rapture coming. We used an old road racing slick tread cut up into squares to quiet it down. later,Mikey
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Old 03-22-2006, 11:12 PM
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[QUOTE=Danny G.]

Can anyone help describe how you anchored the bolts into the concrete? I figure you have to put some small amounts of quickcrete or something like that to finish it off?
QUOTE]
drill some holes in the floor and use the expanding concrete anchors. 3/8 or 7/16" would be more than enough. Use the lag shield type and you won't have to cut the studs off if you ever move the unit. get them at the hardware store. Latr, M
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Old 03-22-2006, 11:21 PM
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You can get female expanding anchors also.
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Old 03-23-2006, 02:09 AM
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The expanding anchors are called by different names. You drill a hole, drive the anchor and stud in at the same time, then nut it. When you tighten the nut the anchor pulls up tight and expands. Here is one called a Thunderstud. You can get them at most hardware stores http://www.confast.com/products/thunderstud-anchor.asp



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Old 03-23-2006, 02:56 AM
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I redeye'd mine straight to the concrete, I have had it that way for about 5 years no problems with vibrations. I set it were I wanted it, took a magic marker an marked the the holes in the feet on the concrete, drilled holes with a hammer drill, installed 3/8" redeyes an bolted rite to the concrete.
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Old 03-23-2006, 05:59 AM
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For my plywood setup, I used concrete screws (the blue ones). You just drill a small 3/16 hole using a concrete bit and screw through the wood into the holes. Then use short lag screws to anchor the compressor feet to the wood.

Kevin45's method requires a hammer-drill to drill the holes into the concrete.
A hammer-drill works better on the small holes too but it isn't required.




Quote:
Originally Posted by Danny G.
Im thinkin' its necessary to have it anchored/bolted in the floor somehow like Roger 1 was saying, well mainly because i'll have allot of piping, I just put 2 pieces of ply on each side and a thin 4" square rubber piece under each leg without being secured to the floor yet. Seems like an important thing to do. Maybe I'm just too paranoid.

Can anyone help describe how you anchored the bolts into the concrete? I figure you have to put some small amounts of quickcrete or something like that to finish it off?

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Old 03-23-2006, 11:35 AM
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Thanks so much to all of you for that info Just what I needed to know. I became more aware of the importance of having it anchored to the floor from seeing allot more compressor setups lately.

Ive recently heard they were also called "vibration isolators". That also effectively quiet down and help with the longevity too. And I seen one set up to give a little like a 1/4" of movement with the fancy pads underneath.

The info and sizes you all mention I really appreciate it. I got a little overwhelmed also when looking for them at http://www.mcmaster.com/
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Old 03-30-2006, 05:27 PM
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Went to the local hardware store for awhile and saw the variey of concrete screws next to the anchors, didn't have any of the female anchors I was trying to find, so I decided to settle for the regular concrete strike anchors. Just $10 spent with the drill bit too.

Got some ideas from what you guys are using since there little selection on rubber pad like material at the store that was worth using for the price. so I looked around the house & found some thick rubbery carpet material I once used for an amp rack. Its like a 50/50 carpet and rubber material on the back of it. So I cut 4 strips and folded them reverse with the rubber part exposed.

Be careful when striking the anchor A tiny piece of metal when striking the top broke off and bounced around till it nailed me in the knee, hard enough to have taken my eye out I should of had the saftey glasses on in the first place

After intitially setting the pads under the legs, it was a little too high for the lowest anchor to thread onto, so I cut out 1 layer on each pad for a little adjustment. Tightened bolts down and doesn't budge anymore




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