Mounting work stands to the floor

[Rusty105]

Hi everyone,

I need to mount a stand for a tubing bender to my shop floor, using 3/8 hardware. I don't want the bolts to be sticking up through the floor when I am done with the bender. I went to the local Home Depot, and the guy recommeded lag sheilds, and 3/8 lag bolts. Will the lag sheild hold solid. The bender weighs about 75-85 pounds, before I start bending the tube and there is going to be a lot of torque on the handle when I start bending, Will the bolts work loose, are there alternatives to this method??

Thanks

 

[rsitzejr]

There will be a lot of twist, I used bolt anchors for mine and it worked fine. You should be ok as long as you spread the base and put the anchors deep enough. My bolts anchors went down about 2-3"

 

[Ken Greene]

bolt anchors are fine...when you drill the holes for the anchor drill it deep enough or throught the floor so that you can drive it down after. remember its a one way pin it won't come out the top but you sure can drive it down deeper. Used to do this all thew time when refitting equipment in Car wash tunnels

 

[Rusty105]

The lag shields I was going to use are those lead type inserts that you stick in the hole and use a large lag bolt to bolt down the equipment. When you take the bolt out, all you are left with is a hole with a lead insert in it. Nothing sticks up. I was just wondering if they would be strong enough. I have used the other type, where you hammer the bolt down, and a metal sleeve gets expanded in the hole, then when you tighten the nut on the bolt the sleeve gets even tighter in the hole. Only problem for me is that when you are done you still have a bolt sticking up through the floor. Since this not a permanent install for this stand, I would like to leave as little evidence as possible. When I am, done I could fill the holes with roc-hard or something and no one would really know I was there.

 

[tenlug]

Check out Hilti HDI anchors. They are much stronger than the shield type, and are threaded on the inside for a bolt.You can set them below floor level and then fill after you are finished. Steve

 

[swgray]

Here's a link to some anchors I've used. The Hilti's mentioned above are probably similar. I got them at Lowes. The setting tool is a separate item.

http://www.confast.com/products/drop-in-anchor.asp

You could sink these below floor level so a bolt could be reinstalled to protect the threads until the next time you use the bender.

 

[Rusty105]

well,..... I have to tell you, that is one hard floor The sheild I was going to use needs a 3" deep 5/8 inch hole. So I got a 5/8 hammer drill bit, set it in the hammer drill and got nowhere! Well not that bad. The drill was smoking after the first hole, so I ran it for a while without any load to cool it off. The other 3 holes only got about 2 inches, before I couldn't go any deeper. There must me some big hard rocks in that concrete mix, about 30 years old, hard as boiler plate. Or am I doing something wrong. I have drilled floors before for mounting screws, but this was insane. Can the bit be resharpened??, but now the holes are a little out of round, so what ever mountings I use may need to be cemented in the floor, like the HDI anchors, or the drop in anchors, I didn't see those at the Home Depot