New Okuma LS owner with questions - Page 4
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  1. #61
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    Thanks for the manual PDFs! Now I've got an easy question and a hard question. Regarding oil, does this look like a reasonable option?
    AW Hydraulic Gear Oil Fluid ISO VG 68 SAE 20 Industrial Machinery Excavator 5gal
    AW Hydraulic Gear Oil Fluid ISO VG 68 SAE 20 Industrial Machinery Excavator 5gal 614654010744 | eBay

    And now the hard question: Do any Okuma LS owners have a drawing or picture with rough dimensions of the micrometer carriage stops? Mine did not come with these and I'd like to replicate the original design as closely as I can. Alternatively, if someone has extras or an appetite to make one I'd buy!

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    Don't know how similar these might be, but here are the stops on my Dong Yang....
    Assuming you are referring to the hard stops that clamp directly on the ways, and not the auto trips for the power feed that mount to the lower casting.

    Steel blocks measuring roughly;
    4.730 deep
    2.950 wide
    3.780 tall including the clamp strap (as installed)

    Stop screws are marked in .001" divisions.
    Block threaded through for micrometer stop.
    Micrometer stop secured via front bolt that bears on the threads of the stop screw.
    Uses brass button with matching threads in its face so as to not damage the micrometer thread.
    Stop screw has shoulder that nests into a counter bore in the face of the block for finished look. (same as micrometer screw)

    All fasteners have 19mm hex.








    There are both a right and left block with contact buttons on the carriage both right and left.
    On my machine, i have a trav-a-dial fitted so the right block is not usable. ...And in reality since the dial install i have not used the micrometer stops.

    Some detail on the micrometer screw....
    Thread is 1/2-20
    Thread is roughly 1.580" long
    Micrometer dial .880" long 24mm OD
    19mm hex .450 tall
    Assembly 2.9" OAL.



    Cheers Ross

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  4. #63
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    Might be of interest, here is my setup on the Trav-A-Dial:
    Mounted to the mounting pad for the thread chasing dial.
    Overall length so that the dial remains in time.

    Window allows adjusting the tracking of the Trav-a-dial and mounting of the bracket....







    Cheers Ross

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  6. #64
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    Quote Originally Posted by FCB84 View Post
    Thanks for the manual PDFs! Now I've got an easy question and a hard question. Regarding oil, does this look like a reasonable option?
    AW Hydraulic Gear Oil Fluid ISO VG 68 SAE 20 Industrial Machinery Excavator 5gal
    AW Hydraulic Gear Oil Fluid ISO VG 68 SAE 20 Industrial Machinery Excavator 5gal 614654010744 | eBay

    And now the hard question: Do any Okuma LS owners have a drawing or picture with rough dimensions of the micrometer carriage stops? Mine did not come with these and I'd like to replicate the original design as closely as I can. Alternatively, if someone has extras or an appetite to make one I'd buy!
    Hi!

    About the oil, I used ISO100 first and it strained the oil pump. Depending on climate I'd run a lower grade yeah, maybe 68 is thin enough.

    I have one carriage micrometer stop yeah. It will take some time but I'll take measurements.

    Regarding my machine, finally replaced the VFD. Running a new Danfoss drive. Super easy to set up, extremely smooth control and with a huge display it is a breeze to work with. Still need to mount the drive in the cabinet and finalize the wiring.
    Tried to fix some play in the on/off/direction control lever but it was necessary to delve deep to get to the worn key so I left it for now. Replaced the felt wipers, fixed some small oil leaks, replaced oil drain hoses, did a lot of cleaning up and organizing now I have a good tool cabinet with drawers.
    Todo: new belts, wire VFD and make clever use of the brake function (thinking of using position sensor on control lever to control brake force) and try to find some more quick change tool holders.

    Ross, thanks for the excellent info regarding the stops! And your machine is still so nice, looks great!

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  8. #65
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    Quote Originally Posted by Botje View Post
    Nice!

    I have the manual in pdf, including parts list etc. Will send asap.

    I would also be very appreciative to recieve the PDF info you have on my Okuma LS lathe... right now i am trying to fix the hand oiler on the front right side of the apron...

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    Here is a parts drawing of the LS apron, there are other parts drawings of the carriage etc if required.
    Click on image, then click again for full size, click a 3rd time (sometimes) for maximum.

    okuma-ls-sheet-11-1-apron-1.jpg okuma-ls-sheet-11-1-apron-1-text.jpg

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    Hi Botje, Nice and helpfull post. I also bought a Okuma LS (short model)and will pick it up next week. I live near Groningen (Netherlands). I tried to send a PM but your inbox is full and cant receive new messages.

    I will need to do some work on the machine and a manual and would be very helpfull. Can you please share this with me?

    Greetings from Groningen, Bart Harkema

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  13. #68
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    Quote Originally Posted by Harkema View Post
    Hi Botje, Nice and helpfull post. I also bought a Okuma LS (short model)and will pick it up next week. I live near Groningen (Netherlands). I tried to send a PM but your inbox is full and cant receive new messages.

    I will need to do some work on the machine and a manual and would be very helpfull. Can you please share this with me?

    Greetings from Groningen, Bart Harkema
    Hi Bart, just cleared my inbox, will send you the manuals asap.

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    Mini update, a few accessories for the Okuma!



    Large steady rest, disassembled, cleaned in the parts washer, ready for further cleaning. Already have the small steady and this is a nice addition. Will do a color match and after filling the broken bondo, a coat of 2K semi gloss Spraymax paint to make it shine again. Knobs and levers are mostly OK, should clean up nicely.




    Thread chasing dial, will receive the same treatment. Metric version, it has 3 divisions.




    The rest of the parts I managed to snag of the machine before it was sent to the junkyard. The big flat-head screw of the cross slide was missing on mine, same as half of the carriage stops.

    Further workshop updates to follow. Swiss iron will accompany the Okuma in the future.
    Attached Thumbnails Attached Thumbnails img_20200730_131344.jpg   img_20200728_080837.jpg   img_20200728_080842.jpg  

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    Hi, I am new to this chat and like a lot of you are desperately looking for manuels in pdf format for the Ls Okuma lathe
    I will appreciate it if anyone can be of assistance

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    Excellent purchase Botje,

    The tool post is a gem, I gave away my KDK $0 here on PM.

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    Hi Botje,

    I'm from the north of Germany and I recently bought an Okuma LS. To complete the documentation of the machine I'd like to have the part's list and technical drawings. Furtermore I have to disassemble the machine for cleanig so the drawings would be helpfull too.

    Could you send me the PDF files, please?

    Kind regards
    Hannes Wittschieben-Kück

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    Quote Originally Posted by Catjan View Post
    Hi, I am new to this chat and like a lot of you are desperately looking for manuels in pdf format for the Ls Okuma lathe
    I will appreciate it if anyone can be of assistance
    Sent you a PM

    Quote Originally Posted by hanneswk View Post
    Hi Botje,

    I'm from the north of Germany and I recently bought an Okuma LS. To complete the documentation of the machine I'd like to have the part's list and technical drawings. Furtermore I have to disassemble the machine for cleanig so the drawings would be helpfull too.

    Could you send me the PDF files, please?

    Kind regards
    Hannes Wittschieben-Kück
    Hi Hannes, Just sent you a PM.

    Always nice to see pictures of other Okumas, you can post some pics here if you want.

    Latest addition is one separate Böni 125 tool holder. Slowly but surely the collection grows. Still need to fix the original ones, one of the previous owners managed to break (jam) the adjustment screws of the 4 holders I got with the lathe. Mystery to me how to over-tighten these screws. Oh well, small issue to fix, super happy with the toolpost.
    Last edited by Botje; 11-21-2020 at 01:36 PM.

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  21. #74
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    Hi Botje,

    the drawings have already been very helpfull!
    Unfortunately I found out that my machine hasn't seen fresh oil very often as you can see below. It looks and smells quite bad.
    But I'll try to make the best out of it.


    Good from far...
    img_20201122_190143017.jpg

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    ...far from good.

    img_20201122_190227647.jpg

    Still the nuts and the screw of the cross slide are not worn very much.
    When I dismounted the oil drain plug the oil didn't even came out. I had to poke through the rusty mud. :|

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    Quote Originally Posted by hanneswk View Post
    Hi Botje,

    the drawings have already been very helpfull!
    Unfortunately I found out that my machine hasn't seen fresh oil very often as you can see below. It looks and smells quite bad.
    But I'll try to make the best out of it.


    Good from far...
    img_20201122_190143017.jpg
    Good to hear the drawings are useful.

    Lathe looks good on this picture!

    Quote Originally Posted by hanneswk View Post
    ...far from good.

    img_20201122_190227647.jpg

    Still the nuts and the screw of the cross slide are not worn very much.
    When I dismounted the oil drain plug the oil didn't even came out. I had to poke through the rusty mud. :|
    And yes this isn't great. I expect the machine has been in the rain once? I would expect it had proper maintenance for most of its time, maybe only having suffered from neglect in the last (half) decade or so. Not a pleasant surprise but when the screw still looks and feels good I would not worry too much.
    My lathe also had various traces of neglect, almost clogged filters, leaks etc. They can take a lot of abuse and when fixed in time its no big deal.

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    Hi!

    Here is a quick update about my Okuma. I think it really had to take some abuse. As my brother and I wanted to drive out the pin that connects the lead screw with the gear box we saw that it was sheered off already. So a user probably had a crash with it. Also there was quite a big burr which caused deep scratches on the screw as you can see below.
    img_20201128_185235921.jpg


    When we took out the spindle control shaft there was another surprise. The bushing was sheered off as well. Maybe someone did a power shift. So now I got to make a new one but I don't know if it has to be out of cast iron. What would you say?
    img_20201128_185221740.jpg

    The rest of the disassembly worked good. The crane we built out of a selfmade engine stand worked fine.
    img_20201128_202636689.jpg
    img_20201128_202647995.jpg
    img_20201128_203705746.jpg

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    I just bought an LS, it's being delivered next week.

    Could someone please send me a PDF of the manual? Thanks in advance!

    [email protected]

    I think I need to step down from the 10hp to something lower...maybe a 5hp due to power availability. Is there a preferred motor? Frame type?


    Thanks!


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