Extruder Motor - O shaft vs D shaft

Discussion in 'Tool heads & ToolChanger' started by Spoon Unit, Aug 20, 2019.

  1. Spoon Unit

    Spoon Unit Well-Known Member

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    Looking through the contents supplied with the Toolchanger, I noticed that one of the extruders was supplied with a motor with an O shaft. All the others have a D shaft. Could this have a mechanical impact on the performance of the extruder?
     
  2. Greg Holloway

    Greg Holloway Administrator
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    The motor is likely to stall before the grub slips. It should not cause any issues.
     
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  3. twam

    twam Member

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    I also received one Motor with O and one with D shaft. Also the extruder motors seem to much bigger than the ones I got with Titan ~2 years ago and was planning to use for two of the toolheads. Is there a way to order them separately to make sure that all toolheads will exactly behave the same?
     
  4. Paul Arden

    Paul Arden Well-Known Member

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    I got 3 D shafts and 1 O shaft with mine.
     
  5. Greg Holloway

    Greg Holloway Administrator
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  6. Ben Kay

    Ben Kay Well-Known Member

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    Also got 3 D-Shafts and 1 O-Shaft
     
  7. Spoon Unit

    Spoon Unit Well-Known Member

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    Welcome to the 'shafted' club :)
     
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  8. Ben Kay

    Ben Kay Well-Known Member

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    :) I'm sure it'll be fine, grub screw went in with a little extra torque :)
     
  9. Spoon Unit

    Spoon Unit Well-Known Member

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    The reply that actually came back was that the motor would stall before the shaft slipped. As you say, a little more torque might help and maybe a bit of the deadly threadlock.
     
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  10. dc42

    dc42 Well-Known Member

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    Last time I bought stepper motors with round shafts, I used a grinding wheel to put flats on them.
     
  11. Spoon Unit

    Spoon Unit Well-Known Member

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    But did you order them with round shafts? The image from the E3D website clearly shows (https://e3d-online.com/titan-extruder) D shafts are part of the spec.

    [​IMG]
    It just feels like E3D got shipped something not to their spec, but didn't, or couldn't, get replacements. Greg mentioned you picked up a fully built Toolchanger. Did they one they built for you also feature a round shaft on one of the extruders? If so, have you since ground it?

    Given you've chosen to grind a flat before now, do you have any recommendations for grinding? I'm assuming magnets and small filings would be a potentially painful mix for a motor.
     

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