Announcement

Collapse
No announcement yet.

Shaft for Hydraulic motor ?

Collapse
X
 
  • Filter
  • Time
  • Show
Clear All
new posts

  • Shaft for Hydraulic motor ?

    Hi Guys,

    Been a while since I posted doing the work, wife and kids thing.
    I need a little advice. I busted the shaft on a hydraulic motor that powers my hyrda bagger.
    AKA a glorified leaf collection system. They do not sell the shaft only the motor. $825.
    I paid $800 for the used tractor with hydra-bagger, so that is out of my price range.

    Anyone turn a shaft for something like this ? Is 12L14 OK to use or do I need something stiffer ?
    It does not look that hard to make about 6 inches long with two key slots one woodruff and one square.
    I have a SB Heavy 10 that should be up for the task. Anyone know what kind of tolerance I would need ?

    Also, anyone know what kind of bolts are holding the hydra motor together ? The bolt heads look like they are a spline.

    pretty good pics of a similar unit
    http://www.ebay.com/itm/Ingersoll-Hy...-/130795113122

    If you can take a look page 14 and 15 of the pdf my motor is the cc33108.
    www.rottmansales.com/ingersoll/8-3082.pdf

    Thanks,
    Kevin

  • #2
    No ideas about the shaft, but the screws look like external torx.

    J

    Comment


    • #3
      The bolts are star head. Your local auto parts should have the sockets.
      Craftsman 101.07403
      Grizzly G0704
      4x6 Bandsaw

      Comment


      • #4
        I personally would use a 43** type steel you want high impact, the tolerance's want to be really close and the seal surface wants to be polished. You might want to try and find out why it broke, look at the break carefully and see if you can figure why it broke, there may be enough wear on the rotor to make unbalanced.

        Comment


        • #5
          Those shafts are usually induction hardened 1050 or 1095 steel,not exactly something that can be done in the homeshop.Once you have the motor apart you may find they have neelde or roller bearings running right on the hardened shaft further complicating the situation.

          Is there any way to modify the machine so the rotor rides on it's own set of bearings and could be driven by an off the self Hyd motor through a coupling?That would eliminate the need for the special motor shaft and $$$ motor.
          I just need one more tool,just one!

          Comment


          • #6
            Originally posted by duckman View Post
            I personally would use a 43** type steel you want high impact, the tolerance's want to be really close and the seal surface wants to be polished. You might want to try and find out why it broke, look at the break carefully and see if you can figure why it broke, there may be enough wear on the rotor to make unbalanced.
            The reason it broke was I sucked up a large branch under the leaves and it jammed the impellor.

            Comment


            • #7
              Yes, it has two sets of roller bearings riding right on the shaft.

              A guy posted on a tractor forum that his broke the same way and he had a machine shop make him one and it was still going strong 3 years later. He did not give any details on how it was made just that he disassembled the motor and took the shaft to the machine shop.

              Comment


              • #8
                This is it.

                Comment


                • #9
                  I do not have the motor apart yet, but I think it broke right where the number 9 arrow is pointing on the picture.
                  I talked to a dealer and he said it was steel, but I swear it looks like cast iron on the break. It almost looks like the shaft from the motor has an insert over top of it and that part goes in the impellor. I have not seen any shaft failure so I really have no clue but that's what it looks like.

                  Comment


                  • #10
                    Originally posted by KiloBravo View Post
                    I do not have the motor apart yet, but I think it broke right where the number 9 arrow is pointing on the picture.
                    I talked to a dealer and he said it was steel, but I swear it looks like cast iron on the break. It almost looks like the shaft from the motor has an insert over top of it and that part goes in the impellor. I have not seen any shaft failure so I really have no clue but that's what it looks like.
                    That sounds like a typical induction hardened shaft break.The outer 1/8" or so will be hard and show a finer grain appearance while the center will appear coarse and grainy like cast ion.
                    The fact they have the roller bearings running right on the shaft is also a dead giveaway.

                    Any chance we can get a picture once it's apart?
                    I just need one more tool,just one!

                    Comment


                    • #11
                      Would regular hydraulic chrome plated shaft work in this application ?

                      Comment


                      • #12
                        What's the brand of that motor? Hydro motors are almost always just an "off the shelf" item and several brands of motors may make a direct replacement for a fraction of the quoted price from a dealer. I build various types of farm equipment and I buy most of my motors from Surplus Center and I have gotten some real d(s)teals from E-Bay. Unless that thing has some kind of odd-ball shaft it can most likely be replaced for much lower cost than buying from an equipment dealer.

                        http://www.surpluscenter.com/error.asp


                        Apparently the site is down for maintenance today but check these guys out they may have what you need at substantial savings, they have a really good tech dept that is just a phone call away and they can often answer questions about non-standard applications or even parts they may not have listed on the site or their printed catalog.

                        Comment


                        • #13
                          I believe the point that makes your Ingersoll hyd. motor unique is that it appears to have a longer than standard threaded shaft.

                          Radkins brings up some good points about most of these motors being fairly standard off the shelf items but sometimes a proprietary application will be unique. Still have a look at his link when it's up again as these motors are not very expensive, and they are new.

                          Here are two other options to think about
                          You could use a standard motor by either fabricating an extension to a standard motor's shaft or by by using a Lovejoy coupling between a standard motor and the impeller. If you choose the last route you will of course need to fabricate an independent mount for the impeller itself so that it is supported by it's own bearings rather than those on the motor.
                          Home, down in the valley behind the Red Angus
                          Bad Decisions Make Good Stories

                          Comment


                          • #14
                            If it was my machine I would change the design so there is something between the hydraulic motor shaft and the impeller that would give before breaking the shaft.

                            Good luck with fixing the shaft. These types of things can really get aggravating.
                            How to become a millionaire: Start out with 10 million and take up machining as a hobby!

                            Comment


                            • #15
                              Here is a good picture of the unit from Ebay
                              http://www.ebay.com/itm/Ingersoll-Hy...-/110933604361

                              Apparently it is made by Haldex Hydraulics from Rockford IL.

                              Yes, the shaft is long. The piece that broke off is 3.4 inches.

                              Comment

                              Working...
                              X