Pololu

The primary feature of this high-efficiency gear box is a worm gear, which locks the output shaft whenever the motor is not turning. The high gear ...

With possible gear ratios of 41.7:1 and 64.8:1, the high-power gearbox is well-suited for most vehicles that require a balance of speed and torque....

The high-speed gearbox can be assembled in 11.6:1 and 18:1 gear ratios. This high-efficiency gearbox is therefore suited for very fast vehicles or ...

This versatile, high-efficiency gearbox lets you build one of the following gear ratios: 11.6:1, 29.8:1, 76.5:1, 196.7:1, 505.9:1, and 1300.9:1. Wh...

The first in Tamiya's “high efficiency” series, the planetary gearbox features two 4:1 and two 5:1 stages that can be combined any way you like—yo...

Tamiya's double gearbox packs two independent gear trains into a compact and affordable package that is great for small mobile robots. Each side c...

This gearbox features a low-current brushed DC motor, which is great for projects where you want to keep your power consumption to a minimum. Its s...

The single gearbox is perfect if you like the gear ratio options of the 70168 double gearbox but need just one motor or added flexibility in positi...

Tamiya's twin-motor gearbox consists of two independent brushed DC motors and gearboxes in one compact housing, making it perfect for small robots....

Tamiya's 3-speed crank-axle gearbox looks very much like half of the twin-motor gearbox (with an added gear ratio option). This compact gearbox ca...

Tamiya's 12-speed multi-ratio mini motor gearbox features a more compact 030-form-factor brushed DC motor driving a single gear train that can be a...

Tamiya's 4-speed low-speed mini motor gearbox features a more compact 030-form-factor brushed DC motor driving a single gear train that can be ass...

Tamiya's 8-speed mini motor gearbox features a more compact 030-form-factor brushed DC motor driving a single gear train that can be assembled to h...

This gearbox has four possible gear ratios, including the highest gear ratio of Tamiya's gearbox series, 5402:1. The other options are 126:1, 441:1...

Unlike the other gearboxes in Tamiya's series, the universal gearbox has a thin metal frame, making it the smallest Tamiya gearbox. The final two g...