Sony CD Player CDP-70 Loading Gear

The gear is marked 4-910-402-01 Gear (2) Loading.

Faulty gear can be replaced with 3D printed one. Replacement gear was fully tested for correct operation.

Gear position in the schematic:


Gear is compatible with CDP-70 Sony CD Player.
However, it might work also with other devices – just check your service manual.

Available for purchase in e-shop.

Philips CD 900 Series gear wheel

3D printed replacement gear wheel (part. no 4822 522 33192) for Philips 900 series CD players.



Tested for correct operation – see the video created by Stanislav V.



Gear is compatible with Philips CD players CD 910, CD 911, CD 920, CD 921, CD 930, CD 931, CD 940, CD 950, CD 951, CD 960. It migh be compatible also with other models – check your service manual.

Available in e-shop.

Tascam 112 / 122 / 488 Gear set (Gear A, B, C)

3D printed replacement gear set for Tascam 112/122/488 tape recorders. The set consists of following gears:
5801474101 Gear A
5801474200 Gear B
5801474300 Gear C
The part numbers might vary for different Tascam models.

All gears were tested for correct operation.

Individual gears are available upon request.

Gear set is compatible with Tascam tape recorders 112MK2, 112RMK2, 122MK2, 122MK3, 488MK2.
It might be compatible with other models – just check your service manual.

Available in e-shop.

Philips FC144, D8634 balancer gear

3D printed replacement balancer gear for Philips FC144, D8634 tape recorders. The gear was made using semi-flexible material similar to the original one.

Tested for correct operation.

Gear is compatible with Philips tape recorders FC144, D8634, D8614, D8623, D8438, D8718, D8734, D6920.

Available in e-shop.

Grundig CF7300 Servomotor gear (head carrier)

Replacement for Servomotor LW39 gear (head carrier) used in Grundig CF model tape recorders.

Servomotor gear position in the assembly

Replacement gears were made using thermoplastic polyuretane (high precision 3D print) that is slightly flexible as the original material and durable.

The part is compatible with following Grundig tape recorders:
CF 7000, CF 7100, CF 7200, CF 7300, CF 7400, CF 7500, CF 20, CF 30, CF 35, CF 303, SCF 1000.

It might work also with other cassette players – just check your service manual.

Available for purchase – go to shop.

Technics/Panasonic RDG5773Z Gear

While a typical problem of Technics/Panasonic tape drives is the RDG5772ZC gear, sometimes might crack also gear located at the opposite side of the tape drive (down side) – RDG5773Z.

Either the lock can be broken or the shaft.

Replacement gear was created using a precise 3D printer using durable Nylon material. Locking mechanism was replaced with a split pin to be less fragile

Schematic of the drive assebmly:

Part is compatible with following devices:
MS20, MS600, RS-CH550, RS-CH700, RS-CH900, RS-T9023, RS-TR210, RS-TR232, RS-TR252, RS-TR252PK, RS-TR262, RSTR262PK, RS-TR265, RS-TR311, RS-TR333, RS-TR515, RS-TR535, RX-CT990, RX-DS05, RX-DS35, RXDS620, RX-DS790, RX-DT07, RX-DT5, RX-DT501, RX-DT680, RX-DT690, RX-E250, RX-E300, SA-CH11, SA-CH150, SA-CH150PPK, SA-CH455, SA-CH455PK, SA-CH52, SA-CH55, SA-CH72, SA-DH66, SA-VC10, SU-CH80, SU-CH82, SU-CH90, SU-CH92, RX-DT501, RX-DT505, RX-C300, RS-TR157, GX-89CD, RX-DS620, RS-TR355, RX-DT707, RX-DS30P, SA-CH33, RS-B55, RS-955, RS-TR165

It might work also with other devices – just check your service manual.

Available for purchase in the e-shop.

Philips DCC600 Spider Gear Set

3D printed replacement spider gear set for Philips DCC digital compact cassette recorders. The gears were made using semi-flexible material similar to the original one.

Tested for correct operation.

Position of the gear set in the tape transport assemlby

Gear set is compatible with Philips DCC recorders DCC600, DCC300, DCC380, FC910, FC930, DCC91. It can also be compatible with other DCC models and vendors (Grundig, Samsung,..), just check the service manual.

Available in e-shop.

Midway Loading Gear For Sony Minidisc MZ-1

The gear is part of Sony Minidisc MZ-1 loading assembly. Sony part number is 4-955-497-01 Gear (Midway C).

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:

Sony MZ-1 schematic


Gear is compatible with Sony Portable Minidisc Recorder MZ-1 and other minidisc devices using mechanism type MT-MZ1-106 – just check your service manual.

Pictures of the gear replacement – thanks to Stanislav!.
https://www.facebook.com/media/set/?vanity=cizmickovy.kaktusko.1&set=a.689272872510005

The gear is available in e-shop.

X33635011

Sled Gear For Sony Minidisc MDM-3A Mechanism (MDS-JE500)

The gear is part of Sony Minidisc MDM-3A mechanism – optical pickup KMS260A and KMS260E. It drives screw that positions the laser pickup. Sony part number A-3304-200-A.

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:

Sony MDS-JE500 schematic


Gear is compatible with following Sony Minidisc players:
MDS-JE500, MDS-JE510, MDS-JE520, MDS-JE480.
However, it might work also with other devices – just check your service manual.

The gear is available in e-shop.
(plastic gear only, without the screw rod)

X33635011