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Sanford miniature surface grinder in the home stretch.

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  • #16
    Originally posted by mikey553 View Post
    None of the pictures so far showed any spark guard on a table. Even if you don't have one, the table may have provisions for it. That may verify the direction of spindle rotation.
    Do you mean a splash guard ?

    JL................

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    • #17
      Yes. Some manufacturers call it a spark guard. It is a vertical plate usually on the left side of the table with CW spindle rotation.

      Comment


      • #18
        Originally posted by luthor View Post
        Why are you using a Rubberized Abrasive wheel?
        Ideal for a broad range of light deburring, smoothing, cleaning and polishing applications on all metals.

        Comment


        • #19
          Originally posted by mixdenny View Post
          The grinder on the page I linked to is from 1957. What is your serial number, I'll add it to the database. When I zoom in on your photo of the name tag it looks like a 1952 grinder. As per the owner of the company there were only two spindles. The first one had a drip oiler and the later one has sealed bearings.Many early grinders were converted to the sealed bearing units. I have seen numerous Sanfords with spindles replaced with different parts. There were several different motor mounts.

          I notice there are two holes on the front of the grinder base that are not standard.
          Serial Number is: 1521543 The two holes were cast in and not drilled, they were unoccupied when I got it. It came with a manual magnetic chuck as well. The spindle had one shielded bearing (front) and one long needle bearing (rear) both serviced by an oiler.

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          • #20
            Originally posted by portlandRon View Post
            I have a Sanford, like your example showing the wheel cover, and yes the treads on the spindle are right handed.
            Thanks Ron, so any trouble with the spindle nut coming loose with RH threads? Maybe there is just not enough friction to cause it to loosen. Maybe I will try it CW and see how it performs.

            Comment


            • #21
              Originally posted by vectorwarbirds View Post

              Ideal for a broad range of light deburring, smoothing, cleaning and polishing applications on all metals.
              Correct, but not good for surface grinding.

              Comment


              • #22
                I've had the next larger model MG going on 15 years. It originally came with a right-hand threaded hub. When the tab washers are in place the wheel cannot impart torque onto the retaining nut and loosen it. I still use the original hub on occasion. Rather than change the wheel on the hub each time I grind a different material I purchased half a dozen new hubs. This time they were all left-hand hubs.

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                • #23
                  Originally posted by luthor View Post

                  Correct, but not good for surface grinding.
                  Maybe he is a knife maker.
                  Knife makers do lots of ODD things with surface grinders.
                  I have even seen them make one into a belt sander.
                  Again, lots of ODD things.
                  Not sure knife makers get the concept of what a surface
                  grinder is even for.

                  -D
                  DZER

                  Comment


                  • #24
                    I have a Boyar-Shultz 612 grinder
                    that for years I did not realize that
                    it had a right hand threaded wheel
                    hub. (should have been left).
                    But I have always ran it off a VFD
                    drive, with a 5 second ramp up.
                    One day it actually did come loose.
                    Nothing catastrophic. That was
                    happening is the wheel was bouncing.
                    I thought my spindle bearings were
                    starting to take a shlt. Further looking
                    I found the wheel nut was loose.
                    I immediately changed it out for a
                    left handed hub. The right hand
                    hub did have the tab washer, but
                    eventually it got loose, even with the
                    soft start. I think the washer is a
                    bit of a safety idea, but not meant
                    to save using the wrong hand hub
                    in the wrong rotation application.

                    Another note, I am using a VFD on
                    all my surface and cylindrical grinders.
                    The ability to vary wheel speed to make
                    them act harder or softer is a huge
                    benefit. Being able to diamond dress
                    a wheel at 10Hz is also a benefit.


                    -Doozer
                    DZER

                    Comment


                    • #25
                      Originally posted by Doozer View Post

                      Maybe he is a knife maker.
                      Knife makers do lots of ODD things with surface grinders.
                      I have even seen them make one into a belt sander.
                      Again, lots of ODD things.
                      Not sure knife makers get the concept of what a surface
                      grinder is even for.

                      -D
                      Nope just the only 4 inch wheel I have to mock up for the wheel guard. I ain't got no others

                      Comment


                      • #26
                        Originally posted by Doozer View Post
                        I have a Boyar-Shultz 612 grinder
                        that for years I did not realize that
                        it had a right hand threaded wheel
                        hub. (should have been left).
                        But I have always ran it off a VFD
                        drive, with a 5 second ramp up.
                        One day it actually did come loose.
                        Nothing catastrophic. That was
                        happening is the wheel was bouncing.
                        I thought my spindle bearings were
                        starting to take a shlt. Further looking
                        I found the wheel nut was loose.
                        I immediately changed it out for a
                        left handed hub. The right hand
                        hub did have the tab washer, but
                        eventually it got loose, even with the
                        soft start. I think the washer is a
                        bit of a safety idea, but not meant
                        to save using the wrong hand hub
                        in the wrong rotation application.

                        Another note, I am using a VFD on
                        all my surface and cylindrical grinders.
                        The ability to vary wheel speed to make
                        them act harder or softer is a huge
                        benefit. Being able to diamond dress
                        a wheel at 10Hz is also a benefit.


                        -Doozer
                        I also have a Boyar Schultz 612 running off a VFD. The main reason for the VFD was mine is a home shop with no 3 phase power BUT the fringe benefits of a VFD on a grinder are huge. I also soft start mine and decelerate to a stop over a few seconds (7-8 sec as I recall). VFD's can be had dirt cheap these days and can totally change the personality of a machine.

                        Comment


                        • #27
                          Wow, I though that was a 6" wheel.
                          Good golly that grinder is small.

                          -D
                          DZER

                          Comment


                          • #28
                            [QUOTE=vectorwarbirds;n1981544] it came with some bastardized mickey mouse garbage disposal motor (no sh*t) and mount which all went in the trash.

                            That would make me crazy. An intermittent duty low rpm motor that trips out on temp after 48 seconds.

                            Comment


                            • #29
                              Originally posted by Doozer View Post
                              I have a Boyar-Shultz 612 grinder
                              that for years I did not realize that
                              it had a right hand threaded wheel
                              hub. (should have been left).
                              But I have always ran it off a VFD
                              drive, with a 5 second ramp up.
                              One day it actually did come loose.
                              Nothing catastrophic. That was
                              happening is the wheel was bouncing.
                              I thought my spindle bearings were
                              starting to take a shlt. Further looking
                              I found the wheel nut was loose.
                              I immediately changed it out for a
                              left handed hub. The right hand
                              hub did have the tab washer, but
                              eventually it got loose, even with the
                              soft start. I think the washer is a
                              bit of a safety idea, but not meant
                              to save using the wrong hand hub
                              in the wrong rotation application.

                              Another note, I am using a VFD on
                              all my surface and cylindrical grinders.
                              The ability to vary wheel speed to make
                              them act harder or softer is a huge
                              benefit. Being able to diamond dress
                              a wheel at 10Hz is also a benefit.


                              -Doozer
                              My grinder is also Boyar Schultz 6 x 12 and it was used for years with the right hand hub. They also had a left hand hub, but it was never used. The machine came from a small toolroom. The spindle rotation is clockwise. Both hubs have 2 slots and a tabbed steel washer. Both hubs do not have a manufacturer's name on them, but look OEM to me. Why do you think both hubs were included with the grinder? What would be the purpose of the right hand hub?

                              Comment


                              • #30
                                I have never had any problem with the nut coming loose.

                                Comment

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