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Question Transtechnick SMB823003 servo for 6DOF motion platform?

Discussion in 'Motor actuators and drivers' started by FoxONe42, May 12, 2019.

  1. FoxONe42

    FoxONe42 6DOF newbie

    Jan 8, 2018
    Aix-en-Provence France
    +22 / 0 / -0
    My Motion Simulator:
    Arduino, 6DOF
    Hi all,
    I have been looking into the build of a 6DOF motion platform for quite a long time but I am stuck with the choice of motor to use for the build. Obviously it is an important decision given the investiment, I don't want to make a mistake, thus my question here.
    In the company I work for, they are using the following servo motor for different applications:
    Transtechnick SMB823003
    Link to the PDF doc (in french only)

    The nominal torque is 2.7 Nm, 3000 nominal rpm and 2.8 A (power supply is 230 V). Max torque is 9 Nm
    I was wondering if these caracterisics are suitable for carry the weight of roughly 200 kg (including platform and payload). I am planning on using them along with a planetary gearbox with a reduction ratio of say 40 or 50 and a lever arm of 140 to 160 mm.

    Thanks in advance
  2. adgun

    adgun Member

    Jan 28, 2008
    +77 / 3 / -0
    With a i-50 gearbox and 140mm lever you have 86,5kg force @ nominal torque (calculated with 90%gearbox eff.)
    It,s a bit on the low site with 200kg load.
    Look how much torque youre gearbox maximal can handle, most nema 32/34 planetaary gearboxes can handle 160nm max, and 50x 2,7 nm=