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Low Cost Motor Gearbox Set

SKU YG2730
Original price $25.39 - Original price $25.39
Original price
$25.39 - $25.39
Current price $25.39
This unit comes complete with a 3V 12,000 RPM motor- . It can be stepped down (with the consequent torque multiplication) up to six times as follows:
- 12,000 x 12/48 = 3,000RPM
- 3,000 x 12/48 = 750RPM
- 187.5 x 12/48 = 46.875RPM
- 750 x 12/48 = 187.5RPM
- 46.875 x 12/48 = 11.72RPM
- 11.72 x 12/48 = 2.93RPM
Clearly, the motor is fitted with a 12 tooth pinion and the small gear cluster is 12 tooth. The large clusters are all 48 tooth. Not all gears need be used The intermediate output shafts are hardened steel, 3mm dia. Also supplied are press fit pulleys. The whole assembly snaps together. hand tools are almost unnecessary.
- Motor can also be varied by changing input voltage but this lowers torque.
- motor cage - 40H x 25W x 28Dmm
- gearbox cluster - 40W x 25D x 30Hmm
- main & intermediate shafts - 63 x 3mm Dia mm
- Supplied in kit form.

Handy Tip A note on gearbox speeds

All DC motors and motor gearboxes can change speed to a considerable amount by changing voltage within specified limits. This reduces need for special gear ratios for your application.


Max efficiency RPM
Motor Type
Motor + Gearbox Set
Motor Nominal Voltage

Power Source Details

DC Voltage


Gear Material

Packaged Dimensions

Packaged Volume
Packaged Weight
Packaged Length
Packaged Width
Packaged Height

Product Availability

Stocked item