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Bushings for Pipe Roller Jack Stand

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  • Bushings for Pipe Roller Jack Stand

    I'm in the process of making a couple of pipe jack stands. Instead of the standard "V" heads, these are going to have two 1/2" x 4" disc type rollers. I've turned them on the lathe already but want to press in bronze bushings instead of just driling a hole in the steel disc.

    My question is this: What size should I drill/ream/bore the hole in the disc roller? The bronze bearings I've purchased are 3/4" OD and 1/2" ID. I've already drilled 1/2" holes in the frame for the pins and the bushings slide over them quite nice. However, I need to press in the bushings so they are tight in the disc rollers and don't spin. I've measured the bushings and they are pretty much spot on (0.7500 OD and 0.500 ID). I'm guessing I need to bore the holes slightly under and press in the bushing, but I'm not sure by how much. I guess I could bore a few test holes and figure it out, but thought you guys might help me get it right the first time.

    Thanks
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  • #2
    Most of the time when I'm going for a decent cold press fit, I bore the holes .003" undersize and put a slight lead on the bushings with a file.

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    • #3
      Taking a closer look at the bushings, they are 0.005 over. I can purchase a reamer that is 0.7490. Perhaps that would be an option instead of setting up and dialing in my boring bar. Would that be too tight or should I go with the 0.7500 reamer?
      Attached Files
      Last edited by garybdavis; 11-30-2010, 08:10 AM.
      Millermatic 35
      Miller TB302G
      Ellis 1800
      Smith & Victor Torches
      Optrel Satellite
      Arcair K4000
      Ingersoll-Rand 175CFM Diesel Air Compressor
      Home Made Welding Trailer

      Comment


      • #4
        If you goof up a bit Locktite them in.

        Comment


        • #5
          Red or blue? You know, I can always count on Sberry for the old shop tricks!

          I ordered a 0.7500 reamer because I'm too lazy to dig out my nice high dollar Kennamental boring bar and make multiple passes to dial it in. I had to order some more bushings and they are spec'ed at 0.0000 to -0.0005 or something like that. So, locktite may be required depending on how bad my lathe is vibrating that day.
          Millermatic 35
          Miller TB302G
          Ellis 1800
          Smith & Victor Torches
          Optrel Satellite
          Arcair K4000
          Ingersoll-Rand 175CFM Diesel Air Compressor
          Home Made Welding Trailer

          Comment


          • #6
            It's looks like you have a hub. Why not drill a hole and use a roll pin. Very easy.
            Nick
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            www.youtube.com/watch?v=jTu7wicVCmQ
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            and check out some of my ironwork and other stuff

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            • #7
              That's what I have up to this point. I started with a 1.25" thick piece of 4" flat bar, cut them into 4" squares, trimmed off the edges, drilled them with a 1/2" center hole and turned them on the lathe. I turned a 1/4" x 1" hub on each end and faced down the roller to 1/2" thick. But, I'd like to be able to replace the bronze bushings if they ever wear out in my lifetime. Realistically, the rollers will probably be trashed by then, but where's the fun in that?
              Millermatic 35
              Miller TB302G
              Ellis 1800
              Smith & Victor Torches
              Optrel Satellite
              Arcair K4000
              Ingersoll-Rand 175CFM Diesel Air Compressor
              Home Made Welding Trailer

              Comment


              • #8
                I suspect you would never wear out the bolts you have now, would take rotating pipe 24 hrs a day at higher speed than a man can do it. Little portable ones I can lay on my benches.
                Attached Files

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                • #9
                  That's a cool idea. I need to find a set of steel caster wheels and save myself the hassle.

                  I know if I were to use bearings, I couldn't pass welding current through them (ground clamp placed on the jack stand), but I'm hoping the bushings will work for this. If not, no big deal.
                  Last edited by garybdavis; 11-30-2010, 05:18 PM.
                  Millermatic 35
                  Miller TB302G
                  Ellis 1800
                  Smith & Victor Torches
                  Optrel Satellite
                  Arcair K4000
                  Ingersoll-Rand 175CFM Diesel Air Compressor
                  Home Made Welding Trailer

                  Comment


                  • #10
                    I like the fact that you have them in your dining room!
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                    More stuff than I can keep track of..

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                    • #11
                      Yeah, the things I drag in and put on her dinning table really thrills the wife.
                      Millermatic 35
                      Miller TB302G
                      Ellis 1800
                      Smith & Victor Torches
                      Optrel Satellite
                      Arcair K4000
                      Ingersoll-Rand 175CFM Diesel Air Compressor
                      Home Made Welding Trailer

                      Comment


                      • #12
                        Originally posted by nocheepgas View Post
                        I like the fact that you have them in your dining room!
                        You don't know Gary. That's his break area in the shop. LOL
                        life is good

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                        • #13
                          Hey Harv, good to see you around. Just finished the welding portion of a corral with 18 gates. Oh, and one slider gate. Man, that was a lot of welding. Kind of reminds me of some of your bigger customer projects. Hope all is well.
                          Millermatic 35
                          Miller TB302G
                          Ellis 1800
                          Smith & Victor Torches
                          Optrel Satellite
                          Arcair K4000
                          Ingersoll-Rand 175CFM Diesel Air Compressor
                          Home Made Welding Trailer

                          Comment


                          • #14
                            Originally posted by garybdavis View Post
                            Hey Harv, good to see you around. Just finished the welding portion of a corral with 18 gates. Oh, and one slider gate. Man, that was a lot of welding. Kind of reminds me of some of your bigger customer projects. Hope all is well.
                            It's all good Gary.

                            I've been watching this because I'm building a machine to bale plastic trash into bricks for housing projects in the third world. I've ordered some one inch 4 tpi acme thread rod for the push mechanism. I'll need a bushing or three.
                            life is good

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                            • #15
                              Sounds like a cool project and I'm sure you are up to it. Post some pics as it comes along.
                              Millermatic 35
                              Miller TB302G
                              Ellis 1800
                              Smith & Victor Torches
                              Optrel Satellite
                              Arcair K4000
                              Ingersoll-Rand 175CFM Diesel Air Compressor
                              Home Made Welding Trailer

                              Comment

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