Replacement gear for rotary encoder 1-464-724-31 used in Sony DAT drives.
Rotary Encoder 1-464-724-31 Gear 
Rotary Encoder Assembly 
Rotary Encoder Assembly (photo by Paul)
You can find the gear here in schematics:
Gear was thoroughly tested for correct operation. Produced using a high precision 3D printer.
Gear is compatible with following Sony devices:
DTC-55ES, DTC-75-ES, DTC-700, DTC-1000ES.
However, it might work also with other devices – just check your service manual.
Available for purchase – go to shop.
X33635011
you are a wonder! does the replacement rotary encoder gear have the pre destined fault lines/holes as the original.
do you also make a replacement part for the arm control nylon(?) hub for a technics sl1500 mk 2
Hi Philip,
Yes, the encoder gear has the adjustment line on the front face.
Regarding the second question I will send you an email.
Kind regards
Martin