Loading Gear 4 For Sony Minidisc MDS-JA30ES / MDS-JA50ES

The gear is part of the Sony Minidisc MDS-JA30ES and MDS-JA50ES tray assembly. Sony part number is 4-987-293-01 Gear (4).

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 Sony Minidisc Recorders MDS-JA30ES and MDS-JA50ES. It can be compatible also with other devices – just check your service manual.

The gear is available in the e-shop.

X33635011

Midway “B” Loading Gear For Sony Minidisc MZ-1

The gear is part of the Sony Minidisc MZ-1 loading assembly. Sony part number is 4-955-496-01 Gear (Midway B).

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

Replaced gears:


The gear is available in the e-shop.

X33635011

ALPS ASD1017 Input Selector Worm Gear

Motorized input rotary selectors ALPS ASD1017 / Yamaha VT148400 were used in several Pioneer, Onkyo, Yamaha vintage amplifiers. There were plastic gears that cracked during the time, including this worm gear.

Replacement worm gear was created using a precise 3D printer and durable material (nylon). The gear was tested for correct operation.

Compatible devices: Pioneer A-501R, A-502R, A-701R, A-702R, Onkyo A 8051, 8940, 9510, 9511, 9711, 9911, Yamaha AX-1070 and more.
The part is also labeled Yamaha Rotary Switch SRBA Gold VT148400 in Yamaha devices.

Compatible with ALPS ASD1016 Input Selector.

Compatible also with Sansui AU-X517R amplifier.

Available in the e-shop.

Check also complementary ALPS selector gears – ALPS ASD1017 Motorised Input Selector Gears

ELTA CRC-1001 Gear

Replacement pinion for Elta CRC-1001 portable cassette player.

Replacement gear was created using a semi-professional 3D printer using durable Nylon material.

Tested for correct operation.

The gear is available in the e-shop

X33635011

Philips 70FC450 70FS365 70FC150 70CD555 Gear Set

Gear set for Philips 70FCxxx and 70FSxxx cassette recorders.

Philips 70FCxxx gear set

Replacement gears were created using a high-precision 3D printer. Gears were fully tested for correct operation. The material is slightly flexible and durable, resulting in silent operation and a long lifespan.


The gear set is compatible with Philips cassette recorders:
70FC450, 70FS365, 70FS364, 70CD555, 70FC145, 70FC150, 70FC152.
FC450, FS365, FS364, CD555, FC145, FC150, FC152.
However, it might work also with other devices – just check your service manual.

Available for purchase in the e-shop.

Technics DAT SMQ40032 Pulley Gear

Pulley Gear SMQ40032 is used in Technics DAT recorders in cassette loading mechanism.

A faulty gear can be replaced with a 3D printed one. The replacement gear has been fully tested for proper function. The gear is made of nylon, which is a very durable material that will last a long time.

Gear position in the schematic:

Technics SV-360 Schematic
Technics SV-3800 Schematic


Gear is compatible with following devices:
Technics SV-360, SV-3200, SV-3500, SV-3800, SV-3800PH, SV-4100, SV-4100PH, SVE10


However, it might work also with other devices – just check your service manual.

Available for purchase in e-shop.

Sony CD Player CDP-30, CDP-70 Loading Gear

The gear is marked 4-910-402-01 Gear (2) Loading or 4-910-454-01.

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-30, 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)

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

Replacement gears were created using a semi-professional 3D printer using a combination of Nylon and TPU material, that guarantees durability and silent operation. The gears were fully tested.

Individual gears are available upon request.

The 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.