Tamiya Gearboxes with 4mm Round Shafts

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Pololu item #: 70
Price: $15.99 $18.50
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The first in Tamiya’s “high efficiency” series, the planetary gearbox features two 4:1 and two 5:1 stages that can be combined in any way you like—you can even combine two kits to get really huge gear ratios. The output is always conveniently on the same axis as the motor shaft. Available gear ratios are 4:1, 5:1, 16:1, 20:1, 25:1, 80:1, 100:1, and 400:1.

On sale!
Pololu item #: 71
Price: $10.95 $12.50
Temporarily out of stock. See product page to backorder.

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 other fast mechanisms that do not require high torque.

On sale!
Pololu item #: 72
Price: $10.95 $12.50
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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.

On sale!
Pololu item #: 73
Price: $10.95 $12.50
Quantity:

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 ratios of 216:1 or 336:1 make this gearbox appropriate for small walking robots, lifting mechanisms, and other applications where high torque is desired.

On sale!
Pololu item #: 74
Price: $13.95 $17.50
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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. Whatever your application, chances are that one of the configurations will do the job.

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Pololu item #: 2390
Price: $13.95 $19.50
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With possible gear ratios of 39.6:1, 47.6:1, 61.7:1, and 74:1, the Tamiya 72007 4-Speed High-Power Gearbox is well-suited for most applications that require a balance of speed and torque.

On sale!
Pololu item #: 2391
Price: $13.95 $19.50
Quantity:

The primary feature of this gearbox is a worm gear, which locks the output shaft when the motor is not turning. Its high gear ratios of 84:1, 216:1, 555.4:1, and 1428.2:1 make this gearbox appropriate for small walking robots, lifting mechanisms, and other applications where high torque is desired.