It's a 1/6 HP 90VDC permanent magnet motor running off 110VAC via a rectifier; Dayton has been making them for at least 20 years. The mounting is 4 bolts about 1.5" apart on the faceplate, with a 1/2" shaft flatted for a setscrew. What I need to do is either locate a source of new armature assemblies or see if someone will rewind old armatures; I now have two dead ones, and nothing has come up for which I've needed to salvage magnets, brush assemblies etc.