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Type: Posts; User: DennisCA

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  1. Replies
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    I'm looking at one bearing for the upper shaft....

    I'm looking at one bearing for the upper shaft. NUP 206 is the specification. Looks like it has a steel cage. Now my local bearing supplier has all the bearings I need, but the NUP 206 bearing they...
  2. Thanks for the feedback, I'll go with open...

    Thanks for the feedback, I'll go with open bearings and only use a seal on the side facing outwards to help prevent leakage.
  3. It's a Deckel FP2 from 1958 and the crash wasn't...

    It's a Deckel FP2 from 1958 and the crash wasn't related to the bearings, I just noticed they sounded bad when I got all the parts out. The gearbox is mostly cleaned out now and the old oil at the...
  4. Open shielded or sealed bearings in gearbox?

    I have apart the gearbox on my milling machine due to a crash (previous owners, has been an incredible PITA to fix) and while I am at it I am replacing the bearings.

    They are all open bearings...
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    Interesting that the schematic specifies a 6305...

    Interesting that the schematic specifies a 6305 2RS bearing for the back, fully sealed bearing on both sides, whereas the one I removed only had a seal on one side, presumably so it could be...
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    Thank you, I took a closer look and indeed one...

    Thank you, I took a closer look and indeed one link was removable. Very good thinking on their part, that.

    I have now removed the entire lower shaft. It goes out the front and not the back.
    ...
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    Vertical shaft came off, had to drill out the...

    Vertical shaft came off, had to drill out the taper pins... That went pretty OK actually. What I am having trouble with is the chain, need to get it off to remove the lower shaft but the chain is not...
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    I've been quite busy all week, I am cleaning up...

    I've been quite busy all week, I am cleaning up the shop now and considering how to go about removing the lower shaft, I also plan to make the transport box for the shaft and sliding gear. Can't send...
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    Yes it can, though the cutting of the minor...

    Yes it can, though the cutting of the minor diameter was not really the focus of my post and I was considering things out of my home shop perspective, would I have such a cutting tool made or bought...
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    I have been looking into spline milling and this...

    I have been looking into spline milling and this link below looks useful, definitely useful to have a horizontal milling machine and using two cutters like that.

    Spline Milling | Smithy - Detroit...
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    Ross that is extremely generous of you. Are there...

    Ross that is extremely generous of you. Are there any other measurements you would like to see on the drawing, angles or tolerances?
  12. Replies
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    I cannot do splines myself, I have no working...

    I cannot do splines myself, I have no working mill and I have no indexing head either. Based on your description of how to make it, I don't think the local shops could make the splines either, not to...
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    I don't know, bur I don't think they could do the...

    I don't know, bur I don't think they could do the same quality job that the original Deckel machinists....

    Based on trying to scratch the parts, I think the 35mm and splines are not only ground...
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    Made a drawing with the main dimensions, the...

    Made a drawing with the main dimensions, the relief cuts I did not detail because I believe they are non-critical, mainly for making sure oil gets in there and lubricates the setup I believe, it's a...
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    Thanks, that would be appreciated! I've taken the...

    Thanks, that would be appreciated! I've taken the dimensions of the shaft and made a basic CAD model, still some features I've not modeled but I got the basic ones:
    16mm (thread) - 25 mm (front...
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    Success, the shaft is now out! But the first gear...

    Success, the shaft is now out! But the first gear is still inside, as is the big gear in the middle, there is not enough room to get them out without disassembling the lower shaft. I think I will...
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    Got the shaft back far enough that the 1st gear...

    Got the shaft back far enough that the 1st gear is off the shaft now, but I am not able to get it out. Unfortunately I managed to damage the threaded portion with the pusher so more damage on the...
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    Well today I managed to make the 3rd gear move...

    Well today I managed to make the 3rd gear move axially, finally (!) I have managed to press it further out than before now but it stops after a while.

    I am pretty sure the reason it's stopping is...
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    I'm fully prepared for the idea that I have to...

    I'm fully prepared for the idea that I have to destroy the shaft. But as I've written earlier, I want to rebuild the shaft in that case. Ideally I'd get it out as completely as possible. I have...
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    I've been working on that, by hand though. But I...

    I've been working on that, by hand though. But I am otherwise engaged this week, so many other things, and a lot of things I've neglected in my focus on this. I've thought about motorizing the...
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    Managed to grind through the broken drill bit...

    Managed to grind through the broken drill bit piece though there are still pieces left I can see, I made another extension to be able to get it all the way in.

    https://i.imgur.com/AP9tF8G.jpg
    ...
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    There is some initial flex I have not been able...

    There is some initial flex I have not been able to get rid off despite all the extra stuff I've stuck on, not sure if it's the finger behind the gears or not that bends a little, I've considered...
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    I've been working on a pusher this weekend, it...

    I've been working on a pusher this weekend, it started as a simple U shape but I kept adding on bits to increase the stiffness but nothing, it won't move a millimeter. I've got the fine threaded M16...
  24. Interesting I did not know that the splashing of...

    Interesting I did not know that the splashing of oil also lubricated the Y-axis slide ways, I thought the oil container in the headstock did that solely via the wicks.
  25. The oil that came out of my gearbox smelled rank,...

    The oil that came out of my gearbox smelled rank, truly awful smell. I too found aluminum particulates in the oil, the previous owner machined a lot of aluminum as I have found it in every nook and...
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