The gear is part of Sony CD Drive base unit BU-30 assembly. This drive is used in CD and VCD players. Base unit is marked BU-30BBD61M, A-4735-885-A. It is compatible with Aiwa BU-30 assembly.
Replacement part was created using a semi-professional 3D printer using durable Nylon material. The gear was tested for correct operation.
You can find the gear here in schematics:
Gear is compatible with following CD Players: Sony HCD-M333, Sony MXD-D400, Sony RCD-W2000ES, Sony RCD-W10, Sony RCD-W100, Sony RCD-W222ES, Sony RCD-W500C, Sony RCD-W50C, Sony CHC-CL3 (HCD-CL3), Sony CMT-M373NT (HCD-M373), Aiwa XR-MN5 (CX-LMN5), Aiwa XR-EM400 (CX-LEM400), Aiwa BMZ-K1 (CX-BK1). However, it might work also with other devices – just check your service manual.
The gear is available in e-shop. (gear only, without motor)