As removed from a Pioneer Cassette Deck Model: CT-506
Pioneer Cassette Deck SPARE PART ONLY
Model: CT-506
Main drive/capstan motor
Motor body OD diameter 39mm
Motor body height 36mm
Brass top section (for the tape deck belts) is removable although I cannot do it - it uses an extremely small hex nut and I do not have such a small hex tool
Brass top section is 20mm height
Manufacturers ID on the rear of the motor
PIONEER
RXM-055
-A
11Jun79NC
Small solder tabs to the side of the motor body for power, + & - are denoted.
Although this is used with the CT-506, it is quite plausible that it will fit or can be adapted to use with other cassette decks.
I am supplying the original Pioneer mounting plate with screws but here is more detail about the mounting of this motor.
6 mounting holes are available (shaft end) - each hole is threaded
These holes are 5mm inside the OD of the body motor, arranged in a circle
Each hole is 15mm from the next
Motor testing:
Prior to removal from the CT-506, this motor was functioning perfectly.
However just to be double-sure, once removed I measured the DC resistance (8.6K due to the speed control electronics inside) and powered it up on 9V DC
No issues at all