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  1. #1
    Chaz's Avatar
    Lives in Ickenham, West London, United Kingdom. Last Activity: 5 Days Ago Has been a member for 9-10 years. Has a total post count of 1,605. Received thanks 110 times, giving thanks to others 69 times.
    Quote Originally Posted by swarf-boy View Post
    Almost. Except I got the 90ST-M04025 model, which is 4NM and 2500 rpm.
    Ok, thanks. Received them yet? What do you think of them?

  2. #2
    I think they make an excellent garage ornament , as that is pretty much all they are right now.

    Motors them selves appear quite well constructed. Seals on every joint etc. Bearings all feel nice. Keyed shaft is well machined. Drives appear well constructed too.

    My only real gripe, is the 25 pin D connector that is on CN3.
    It will have 3 or 4 different cable going to it eventually (including a shielded catb7 I think, for the encoder feedback).

    Let you know more when my 24V PSU arrives.

  3. #3
    Chaz's Avatar
    Lives in Ickenham, West London, United Kingdom. Last Activity: 5 Days Ago Has been a member for 9-10 years. Has a total post count of 1,605. Received thanks 110 times, giving thanks to others 69 times.
    Quote Originally Posted by swarf-boy View Post
    I think they make an excellent garage ornament , as that is pretty much all they are right now.

    Motors them selves appear quite well constructed. Seals on every joint etc. Bearings all feel nice. Keyed shaft is well machined. Drives appear well constructed too.

    My only real gripe, is the 25 pin D connector that is on CN3.
    It will have 3 or 4 different cable going to it eventually (including a shielded catb7 I think, for the encoder feedback).

    Let you know more when my 24V PSU arrives.
    Great, thanks.

  4. What control are you going with?

  5. #5
    Chaz's Avatar
    Lives in Ickenham, West London, United Kingdom. Last Activity: 5 Days Ago Has been a member for 9-10 years. Has a total post count of 1,605. Received thanks 110 times, giving thanks to others 69 times.
    Quote Originally Posted by battwell View Post
    What control are you going with?
    Centroid Acorn.

  6. #6
    Chaz's Avatar
    Lives in Ickenham, West London, United Kingdom. Last Activity: 5 Days Ago Has been a member for 9-10 years. Has a total post count of 1,605. Received thanks 110 times, giving thanks to others 69 times.
    Hi,

    So Centroid ordered, looking at motor options. DMM do a Nema 42 replacement that has the correct shaft length and diameter which helps (roughly 50mm and 5/8th inch) - how are you dealing with pulleys and mounting options for your new motors?

    The DMM stuff is pricy too, so looking at options.

    Thanks

  7. #7
    Had 2 different thoughts on pulleys. ( but that's all they are right now.)

    A) Make a shaft extension piece and stick original gear on the
    end. ( quick & simple, but depends on length)

    B) Make a new gear with an extended boss.
    ( seems a more engineered solution, but more expensive
    and a lot more time to machine from solid. Also I would
    have to make a single tooth form tool. Fortunately I already
    have a H/V rotary table with dividing plates)

    Sickeningly, this would be a great job for the 4/5 axis machine that I hope to end up with ,but isn't that always the way!


    Re mounting, my servo motors have a stupid raised boss on the front face. Going to turns this off in the lathe.

    X & Y axis should be OK with a flat face.

    Z AXIS mounting plate is part of main head casting and has a circular pocket machined in to accept the old SEM motor. ( no way I am stripping that lot off to mess with. Thinking of just making an exact size disk to drop into pocket to level out the surface. Then bolt motor straight on.
    The bolt pattern on new motors is a little larger, so just thought of rotation the bodies 45°, marking and drilling a new PCD to suit.
    Last edited by swarf-boy; 04-01-2019 at 12:18 AM.

  8. #8
    Quote Originally Posted by Chaz View Post
    Great, thanks.
    Hi Planning to up grade my Bridge port soon
    Planning on using this and my old motors
    Upgrading encoders
    https://www.centroidcnc.com/centroid...ontroller.html
    Any recommendations.
    Thanks Anthony

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