This is a New Old Stock Boston Gear CBF20TPN-45054 (obsolete/special part number). Made in Japan (box reads Made in USA). This unit is also tagged with Hayssen packaging equipment part number 10217A2717.
Coil Voltage: 90 VDC 0.09 AMP.
Enclosure Type: Enclosed, painted, cast aluminum, There are four small openings on the underside of the unit.
Speed: 4500 RPM Mounting: Foot Mount, aluminum cast with housing, four bolt 1/4″ ID
Torque: 20FT-LB Shaft Diameter: 3/4″ keyed shaft, ferrous
Overall Length: 13″ (shafts is about 2-1/4″ on each side)
Overall width: 7″
Age of unit: The original box has a shipping label from 1994.