Tamiya 72001 Planetary Gearbox Kit

Tamiya 72001 Planetary Gearbox Kit
Pololu item #: 70 44 in stock

Price break Unit price (US$)
1 15.99 18.50
10 14.99
50 14.25


backorders allowed

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.

 Description Specs (6) Pictures (7) Resources (2) FAQs (5) On the blog (0) 

General specifications

Typical operating voltage: 4.5 V
Gear ratio options: 4, 5, 16, 20,
25, 80, 100, 400 :1
Free-run motor shaft speed @ 3V: 6800 rpm1
Free-run current @ 3V: 130 mA2
Stall current @ 3V: 2.5 A
Motor shaft stall torque @ 3V: 1.2 oz·in3

Notes:

1
A theoretical speed of the gearbox output shaft can be computed by dividing this speed by the gear ratio.
2
This is the no-load current of the motor when disconnected from the gears in the gearbox; the no-load current of the entire gearbox with the motor connected will be slightly higher and will vary depending on the gear ratio.
3
A theoretical torque of the gearbox output shaft can be computed by multiplying this torque by the gear ratio.