More details from the motor casing:

  • Electrocraft
  • Model: E19-2
  • Serial: A01314
  • Part #: 0643-08-013

It looks like it was made by Robbins Myers Motor & Control Systems Division.

In case anyone is wondering, this motor comes from inside of a PUMA 560 robotic arm.

It also has an encoder/potentiometer attached to it which I am interested in getting datasheets for as well:

  • esoline (? it's actually kind of hard to read the first character on the label) encoder.
  • Type: P.4201717
  • S. No.: 70754086
  • 7223C30903

Any help in finding datasheets, or at the very least pinouts for either of these would be much appreciated.



I have the catalogue specs on 0643-31-011 & 0643-32-011 models, these were the 0643 off-the-shelf models and I believe the other numbers are special order and may have been just different mounts or shaft size etc.

I will post them here in case someone has the same question in the future. Of the two models, one show the specs in oz-in and the other in lb-in, but converted they appear to be close to the same. 0643-33-004
continuous stall 155 oz-in
pk torque 720 oz-in
max terminal voltage 60
max speed 4800 rpm
inertia .0304 oz-in-sec^
Kt 16.8 oz-in/amp
Ke 12.4 v/krpm
max pulse current 43 amp
Inductance .5mH

continuous stall 9.7 lb-in
pk torque 45 lb-in
max terminal voltage 60
max speed 3700 rpm
inertia .0019 lb-in-sec^
Kt 1.34 lb-in/amp
Ke 15.9 v/krpm
max pulse current 33 amp
Inductance .8mH
Good luck


Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.