Servo motor

Hi everyone:

At the opposite end of the spectrum from the Sherline stuff:

I found a surplus servomotor yesterday. Approx. 7" dia, 24" long,
probably weighs70 lbs. , label is Kollmorgan.
rated 40 ft-lb torque at speed (1600 rpm) and 120 at stall with approx
equalvalent current inputs in A.
Tach is 19 V/1000 rpm and it has a brake (AC). Connectors are AN. I'm
assuming the voltage is 28 DC but the label says nothing about input
voltage.

Anyone have further information including usual applications?

Dave