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R2 X AXIS

Discussion in 'Troubleshooting' started by bill Snyder, Mar 28, 2019.

  1. bill Snyder

    bill Snyder Member

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    R2 Y axis moves freely. X axis very rough. Any thread dealing with this or solutions. Thanks
     
    #1 bill Snyder, Mar 28, 2019
    Last edited: Mar 28, 2019
  2. mark tomlinson

    mark tomlinson ༼ つ ◕_ ◕ ༽つ
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    #2 mark tomlinson, Mar 28, 2019
    Last edited: Mar 28, 2019
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  3. bill Snyder

    bill Snyder Member

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    Thats my next step. Seems when all alen screws are loose on right side with large rod (bushing?) moves freely. When that rod is tighten it binds. So I'll have to find those orange clips they sent and follow aligning. Will check back.
     
  4. bill Snyder

    bill Snyder Member

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    Seems the motor is froze. Machine is unplugged. Is there something I can do or do I have to replace? Thanks
     
  5. WheresWaldo

    WheresWaldo Volunteer ( ͠° ͟ʖ ͡°)
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  6. bill Snyder

    bill Snyder Member

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    Thank you. Is there any instructions on replacement? I still have a month of warrantee. Is it worth waiting and going through Robo or just quicker and easier to order my own?
     
  7. Geof

    Geof Volunteer Moderator
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    Even if you source your own have Robo send you warranty parts. Its there and included in the purchase price, they need to supply :D
     
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  8. mark tomlinson

    mark tomlinson ༼ つ ◕_ ◕ ༽つ
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    It will absolutely be faster to order your own.
    They have been in a bad state for replacement parts so I can't even assume you will get one, much less quickly.
    Still, you should open a ticket for a warranty replacement.

    P.S. and none of us work for Robo so we can't speak for what they may do or how, just judging from recent experience. This forum is not the way to talk to Robo directly :) We can help and advise though.
     
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  9. bill Snyder

    bill Snyder Member

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    Thanks Guys. With the page Wheres Waldo provided they range from 38-42 mm. Plugs are varied. Some provide what each wire is. Voltage as low as 2.6V to some 9V to 42V. Is there an exact or will any do?
     
  10. mark tomlinson

    mark tomlinson ༼ つ ◕_ ◕ ༽つ
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    Just make sure you are getting 4-wire steppers (not 6) and the voltage is not a big deal these are stepper and are really current driven. As long as the current is < 1.5amp/phase you are fine (1amp/phase is normal, 2 phases: A/B so 2amp rating is common). The Pololu stepper drivers will do the rest ;)

    With 4-wire steppers the wires are all identical in terms of colors and what is connected where (A+, A-. B+, B-)

    31cKfwDcIqL.jpg
     
    #10 mark tomlinson, Mar 30, 2019
    Last edited: Mar 30, 2019
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  11. bill Snyder

    bill Snyder Member

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    Thank you very much. Diagram really helped.
    Bill
     
  12. bill Snyder

    bill Snyder Member

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    Ordered one on Amazon. Put in a ticket to Robo. This is my second ticket. First problem was nicely solved by Jason last month.
    Now to figure out how to replace. Any threads on that?
     
  13. WheresWaldo

    WheresWaldo Volunteer ( ͠° ͟ʖ ͡°)
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    3D printers run the steppers at low voltage and high amperage. So it doesn't really matter what the specs say. Almost all NEMA 17 (NEMA designates physical size) x 40 mm steppers run in the same range. Just pick one.
     
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  14. mark tomlinson

    mark tomlinson ༼ つ ◕_ ◕ ༽つ
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    Probably not, BUT ... you can create one when you do it :)

    The hardest part is probably disassembly and there are some threads on that. Once you get the shell off it is not too bad.
     
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  15. bill Snyder

    bill Snyder Member

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    Put in a ticket to Robo and heard back from Jason. So they will be sending a new one. Just whether it's still in warrantee. Which it should be as I bought last May. Ordered one from Amazon too.
     
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  16. bill Snyder

    bill Snyder Member

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    Received a replacement stepper from Robo. Replaced and works fine. Will upload images for replacement. BUT in loosening the axis I lost one of the ends for the 8mm rod. this is the piece that centers the rod in the hole in the case. I know it's metal but a printed one would do. Does anyone know if such a stl exists?
     
    #16 bill Snyder, Apr 4, 2019
    Last edited: Apr 4, 2019
  17. mark tomlinson

    mark tomlinson ༼ つ ◕_ ◕ ༽つ
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    The bushing?
    Hmm... maybe one of the R2 folks has one. If it just fell down inside it might be worth spelunking to find it :)
     
  18. WheresWaldo

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    That is a bearing, and I think we already speced that flanged bearing in another thread, too lazy to look for it myself and don't recall the exact spec.
     
  19. mark tomlinson

    mark tomlinson ༼ つ ◕_ ◕ ༽つ
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  20. Geof

    Geof Volunteer Moderator
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    I havent had to replace in my units so not sure. At a glance there are no markings on the super chinese ones in the units so would have to suggest what Waldo has listed as a part number in the thread you linked to :(
     

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