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Just got a Surface grinder...yay

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  • Just got a Surface grinder...yay

    Not like I was really dyin' for one, but this popped up and I fell for it.
    Boyar Shultz Challenger 612. Has a built in dust collector and a DRO too. I still need to get a phase converter though (or get a new motor). But I think a cheap VFD is just the ticket for the 3/4hp motor. And the oneshot oiler is missing.
    I find it strange that the single axis of DRO is on the Y, I would think it would be more useful on Z.
    Any idea why the power switch would have "automatic" as well as "manual" if it is strictly a manual machine? It don't look like any of the drive parts were missing.
    Couldn't track down a user manual yet either, anyone point me to one?



  • #2
    http://www.ozarkwoodworker.com/manuals/boyar-schultz/

    Comment


    • #3
      Sliding around

      Originally posted by rubes
      .........................................
      .....................................

      I find it strange that the single axis of DRO is on the Y, I would think it would be more useful on Z.

      ..............................................
      ................................................


      I think the reason the DRO is on the "Y" axis is for use when "side" grinding - ie when using the side/s of the wheel - as the hand-wheel/dial may not be as accurate as was required. That sort of work is common on Tool & Cutter grinders.

      The reason a DRO is not fitted to the "Z" is or may be that it may not be required as the "Z" dial calibrations are finer than in "Y" and further, the surface grinder "Z" drive is "hanging off" rather than necessarily being driven by the nut and lead-screw and is a much more accurate arrangement than is the case on a lot of other screw-driven slides/drives............................................ .

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      • #4
        Tiffie's got it right.

        One of my mentor's is a Tool and Die maker and he explained it the same to me. The wheel in Z is .0005 graduations, so you can pretty much sneak up on .0001 if you interpolate the lines.

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        • #5
          congrats!

          .
          in Toronto Ontario - where are you?

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          • #6
            The automatic setting on the switch for the one I once used was to control the dust collector that went with it. Manual = grinder only, Automatic = grinder and dust collector.

            As for the one shot lube, get something back on there. One of the areas that lube is supposed to supply is a line that runs up under the top cap and allows oil to drip down the guides for the wheel assembly to move up and down. As that gets sticky from lack of lube the wheel can drop down nearly .050 at a time. You want the wheel to progress down at the same rate that the hand-wheel is turned for control of the grinding.

            The more I think about it, that lubricator is supposed to be electrical and run continuously. It has a little timer on it that pumps a small amount of oil every 10 minutes or so.

            rock~
            Last edited by rockrat; 03-16-2010, 09:30 PM.
            Civil engineers build targets, Mechanical engineers build weapons.

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            • #7
              Now your making me anxious rubes, I bought a B&S #2 two months ago and have not been able to get it picked up with all the nasty weather we have had. You will use that more then you think is my guess.

              Nice.

              Ken

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              • #8
                Originally posted by Ken_Shea
                Now your making me anxious rubes, I bought a B&S #2 two months ago and have not been able to get it picked up with all the nasty weather we have had. You will use that more then you think is my guess.

                Nice.

                Ken
                hahaha...I thought I was having it bad since I paid for it a week ago, and just got it yesterday.

                Thanx Tiffie and Jim...that does make sense now that you mention it.

                Rock, I guess that could be it on the auto/manual switch, thanx. And yeah, an oiler will definately be back on there. the tubing is still there, just the pump and res. are missing. I did notice on some of the ones I saw that the oiler looked electrical...wonder what the chances are of finding just one of those

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                • #9
                  yea im pertty sure oil systems on a surface grinder are mucho important. Iv read about a few surface grinders that seemed to use the oil system to flush grit outta the slideways, (or rather, keep it from getting up there in the first place).
                  Play Brutal Nature, Black Moons free to play highly realistic voxel sandbox game.

                  Comment


                  • #10
                    Similar

                    My Chevalier 612 looks very similar to your new machine, right down to the sheet metal base cabinet. I wonder if my 1978 era chevalier is a branded unit?

                    Would a surface grinder on a mobile base suffer finish issues?

                    As others have said, you'll find many uses for your new machine!
                    Last edited by chrisfournier; 03-17-2010, 09:28 PM.

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                    • #11
                      Originally posted by chrisfournier
                      My Chevalier 612 looks very similar to your new machine, right down to the sheet metal base cabninet. I wonder if my 1978 era chevalier is a branded unit?
                      The Chevaliers i've had and have are Chinese (well, Taiwanese) knock offs of well known grinders - maybe yours is a copy of the Boyar Shultz ?
                      in Toronto Ontario - where are you?

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                      • #12
                        Copy cat

                        McGyver, I think you're right about this.

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                        • #13
                          Try these links for the parts list and manual for the Boyar-Schultz Challenger series surface grinder.


                          http://www.cobaltequipment.com/manua...rts_Manual.pdf

                          http://www.cobaltequipment.com/manua...ltz_Manual.pdf

                          Michael

                          Comment


                          • #14
                            Originally posted by chrisfournier
                            ...Would a surface grinder on a mobile base suffer finish issues?...
                            hmmmm, didnt really think of that, but I assume you're right. Since apparently eveything else effects surface finish. The cart came with it, and sure does make it convienient for now. I'll see what the finishes look like and may have to take it off once I find a spot for it.

                            And on the finish note...since there appears to be no lock on the Z axis, does the height of the wheel really stay put during operation? it is really easy to turn the handle, and I would have just assumed that there would be a lock to keep it in position. I guess a balanced wheel keeps it from vibrating downwards?

                            My noobieness in all things grinder related is really showing, eh?

                            Thanx Michael...I knew it had to be available somewhere.

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                            • #15
                              As I recall, I priced the Bijur pump that was on our old machine and was nearly heartbroken when they told me how much it was to replace. I just saw one on ebays "buy it now" for $295. That was cheaper than what I had been quoted. You might find a used one at a machine dealer for much cheaper.

                              By the way, nice score. I dont know how I would get along without my Reid grinder. They are so nice to have in the shop.

                              rock~
                              Civil engineers build targets, Mechanical engineers build weapons.

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