dc motor - spindle / shaft drive

[dsc]

Thanks for the info Mark, the startup torque will be an issue though as the machine will be packed with coffee and that is when the high torque is needed, to get things moving. Once the thing starts spinning, the torque requirements drop to low levels.

Jazz, the 9Nm was measured with a torque wrench, hand cranking manually and changing the settings on the torque wrench (going up from 5Nm, 1Nm at a time, each time it clicked). I was surprised as well, but as I said above, that's static torque, dynamic is much lower.

Regards,
dsc.

[blackburn mark]

I was surprised as well, but as I said above, that's static torque, dynamic is much lower.

owch! that is a pain :(
I cant find any torque info on the DC motor either but im getting the feeling it would struggle in this application without a big ratio