Extracted from a very nice SONY multi CD player which unfortunately had physical loading mechanism issues ... nothing for it but to transfer the machine to the "operating table" for the extraction of working, reusable parts ... this is a couple of those parts.
These Mabuchi motors are widely used in many different Japanese CD players
MABUCHI - DC Motor
Model: RF-500TB-14415
Nominal running speed is 2540rpm
Operates across a wide DC voltage range (1.5 ~ 9V) although the nominal voltage is 5V
Current under normal load conditions is 120mA

Direct shaft rotation, NO gearhead
DIMENSIONS:
Body - 31.2mm diameter x 18.8mm height
Central shaft - 1.75mm diameter shaft, length 7.5mm
Two topside threaded mounting holes
MOTOR 1:
Top of the shaft has a plastic pulley fitted
MOTOR 2:
Top of the shaft has a worm drive fitted
Now stored in sealed, clear plastic individual packets