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  1. dnleng

    magnetic coupling torque calculations

    It is a little bit more complicated than this. Because the right side is removable, I have to allow for tolerance (manufacturing) errors and minimize the removal force required due to the geometry of the rest of the assembly. It is not easy to grab and pull up due to geometry constraints so the...
  2. dnleng

    magnetic coupling torque calculations

    Because the right side is attached to a geometry which is removable. The whole thing is placed in a box and the left side pulley that you see in the image is attached permanently to the box. The right side is attached to another geometry which is removable. The electromagnetic clutches that I...
  3. dnleng

    magnetic coupling torque calculations

    Indeed, radial gap would be betterm but the the removable concept goes bang. Imagine the the right pulley one the image is connected to a mechanism and you remove the whole thing by miving it upwards. The radial gap would create more design problems, at least for this application.
  4. dnleng

    magnetic coupling torque calculations

    The maximum torque should be less than 1.2 Nm which is the motor stall torque. Actually I had success with 8mm magnets using 2mm air gap. The problem is that every time you want to experiment you have to manufacture things and buy magnets etc so a computer simulation about the torque...
  5. dnleng

    magnetic coupling torque calculations

    Forgot to mention that the gap is exaggerated in the picture... we are looking for 4-5mm. I know that the more magnets the better, the higher the radius the better, the stonger magnets the better. I have to find a way of putting an iron plate at the back but then again corrosion issues may...
  6. dnleng

    magnetic coupling torque calculations

    Hi Ben, Many thanks for your reply, Here it is how it looks The disc on the right is pure aluminium. The disc on the left is a pulley, with a circular slot and another disc (exactly the same as the one on the right) is bolted inside. D.
  7. dnleng

    magnetic coupling torque calculations

    Again, many thanks for your time, I understand the concept of pulling (i.e. one disc North, one disc South). You essentially 'drag' the magnet opposite to you because of this attraction. Then I have seen Halbach arrays in the internet but then again I do not understand the concept even by...
  8. dnleng

    magnetic coupling torque calculations

    Appreciate the replies, MagMike, although my knowledge is limited, it will work more efficient because of the magnetic field shapes produced due to this arrangement no ? I can go with ten 10mm N52 but then again they will be very close to each other. I think that does not matter but I am not...
  9. dnleng

    magnetic coupling torque calculations

    Although this is my first post here, I have spend many hours during the last years following the forum and getting information from others, but this time it seems that I am in a dead end. As far as magnetism goes I am a complete newbie ... So take it easy with the answers ! I am looking to...

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