The gear RDG0034 was used in 90’s Technics/Panasonic drive mechanics. It is attached to motor that is driving tape transport. It sometimes tents to crack during the time.
Faulty gear can be replaced with 3D printed one. This type of drive mechanism is quite easy to disassembly – just follow service guide steps. You can find the gear here in schematics:
You can see replacement of gear in video bellow.
Here is video showing replacement of the gear and operation in drive mechanism.
Gear is compatible with following devices:
RS-BX828, RS-BX404, RS-BX606, RS-DC10, RS-E10, RS-TR555, RS-B555, RS-B565, RS-B655, RS-B665, RS-B755, RS-B765, RS-BX626, RS-BX707, RS-BX727, RS-BX808, RS-BX747.
However, it might work also with other devices – just check your service manual.
Available for purchase – go to shop.