Pololu 3071 - 10:1 Micro Metal Gearmotor HPCB 6V with Extended Motor Shaft

Overview:

These tiny brushed DC gearmotors are available in a wide range of gear ratios—from 5:1 up to 1000:1—and with five different motors: high-power 6 V and 12 V motors with long-life carbon brushes (HPCB), and high-power (HP), medium power (MP), and low power (LP) 6 V motors with shorter-life precious metal brushes. The 6 V and 12 V HPCB motors offer the same performance at their respective nominal voltages, just with the 12 V motor drawing half the current of the 6 V motor. The 6 V HPCB and 6 V HP motors are identical except for their brushes, which only affect the lifetime of the motor.

The HPCB versions (shown on the left in the picture below) can be differentiated from versions with precious metal brushes (shown on the right) by their copper-colored terminals. Note that the HPCB terminals are 0.5 mm wider than those on the other micro metal gearmotor versions (2 mm vs. 1.5 mm), and they are about 1 mm closer together (6 mm vs. 7 mm).

With the exception of the 1000:1 gear ratio versions, all of the micro metal gearmotors have the same physical dimensions, so one version can be easily swapped for another if your design requirements change. Please see the micro metal gearmotor comparison table for detailed specifications of all our micro metal gearmotors. This dynamically-sortable table can help you find the gearmotor that offers the best blend of speed, torque, and current-draw for your particular application. A more basic comparison table is available below.

Rated Voltage	Motor Type	Stall Current @ Rated Voltage	No-Load Speed @ Rated Voltage	Approximate Stall Torque @ Rated Voltage	Single-Shaft (Gearbox Only)	Dual-Shaft (Gearbox & Motor)
12 V	high-power, carbon brushes (HPCB)	800 mA	6000 RPM	2 oz-in	5:1 HPCB 12V	5:1 HPCB 12V dual-shaft
			3000 RPM	4 oz-in	10:1 HPCB 12V	10:1 HPCB 12V dual-shaft
			1000 RPM	9 oz-in	30:1 HPCB 12V	30:1 HPCB 12V dual-shaft
			625 RPM	15 oz-in	50:1 HPCB 12V	50:1 HPCB 12V dual-shaft
			400 RPM	22 oz-in	75:1 HPCB 12V	75:1 HPCB 12V dual-shaft
			320 RPM	30 oz-in	100:1 HPCB 12V	100:1 HPCB 12V dual-shaft
			200 RPM	40 oz-in	150:1 HPCB 12V	150:1 HPCB 12V dual-shaft
			140 RPM	50 oz-in	210:1 HPCB 12V	210:1 HPCB 12V dual-shaft
			120 RPM	60 oz-in	250:1 HPCB 12V	250:1 HPCB 12V dual-shaft
			100 RPM	70 oz-in	298:1 HPCB 12V	298:1 HPCB 12V dual-shaft
			32 RPM	125 oz-in	1000:1 HPCB 12V	1000:1 HPCB 12V dual-shaft
6 V	high-power, carbon brushes (HPCB)	1600 mA	6000 RPM	2 oz-in	5:1 HPCB 6V	5:1 HPCB 6V dual-shaft
			3000 RPM	4 oz-in	10:1 HPCB 6V	10:1 HPCB 6V dual-shaft
			1000 RPM	9 oz-in	30:1 HPCB 6V	30:1 HPCB 6V dual-shaft
			625 RPM	15 oz-in	50:1 HPCB 6V	50:1 HPCB 6V dual-shaft
			400 RPM	22 oz-in	75:1 HPCB 6V	75:1 HPCB 6V dual-shaft
			320 RPM	30 oz-in	100:1 HPCB 6V	100:1 HPCB 6V dual-shaft
			200 RPM	40 oz-in	150:1 HPCB 6V	150:1 HPCB 6V dual-shaft
			140 RPM	50 oz-in	210:1 HPCB 6V	210:1 HPCB 6V dual-shaft
			120 RPM	60 oz-in	250:1 HPCB 6V	250:1 HPCB 6V dual-shaft
			100 RPM	70 oz-in	298:1 HPCB 6V	298:1 HPCB 6V dual-shaft
			32 RPM	125 oz-in	1000:1 HPCB 6V	1000:1 HPCB 6V dual-shaft
6 V	high-power (HP) (same specs as 6V HPCB above)	1600 mA	6000 RPM	2 oz-in	5:1 HP 6V	5:1 HP 6V dual-shaft
			3000 RPM	4 oz-in	10:1 HP 6V	10:1 HP 6V dual-shaft
			1000 RPM	9 oz-in	30:1 HP 6V	30:1 HP 6V dual-shaft
			625 RPM	15 oz-in	50:1 HP 6V	50:1 HP 6V dual-shaft
			400 RPM	22 oz-in	75:1 HP 6V	75:1 HP 6V dual-shaft
			320 RPM	30 oz-in	100:1 HP 6V	100:1 HP 6V dual-shaft
			200 RPM	40 oz-in	150:1 HP 6V	150:1 HP 6V dual-shaft
			140 RPM	50 oz-in	210:1 HP 6V	210:1 HP 6V dual-shaft
			120 RPM	60 oz-in	250:1 HP 6V	250:1 HP 6V dual-shaft
			100 RPM	70 oz-in	298:1 HP 6V	298:1 HP 6V dual-shaft
			32 RPM	125 oz-in	1000:1 HP 6V	1000:1 HP 6V dual-shaft
6 V	medium-power (MP)	700 mA	4400 RPM	1.5 oz-in		5:1 MP 6V dual-shaft
			2200 RPM	3 oz-in	10:1 MP 6V	10:1 MP 6V dual-shaft
			730 RPM	8 oz-in	30:1 MP 6V	30:1 MP 6V dual-shaft
			420 RPM	12 oz-in	50:1 MP 6V	50:1 MP 6V dual-shaft
			290 RPM	17 oz-in	75:1 MP 6V	75:1 MP 6V dual-shaft
			220 RPM	21 oz-in	100:1 MP 6V	100:1 MP 6V dual-shaft
			150 RPM	28 oz-in	150:1 MP 6V	150:1 MP 6V dual-shaft
			100 RPM	36 oz-in		210:1 MP 6V dual-shaft
			90 RPM	41 oz-in		250:1 MP 6V dual-shaft
			75 RPM	46 oz-in	298:1 MP 6V	298:1 MP 6V dual-shaft
			22 RPM	80 oz-in	1000:1 MP 6V	1000:1 MP 6V dual-shaft
6 V	low-power (LP)	360 mA	2500 RPM	1 oz-in	5:1 LP 6V	5:1 LP 6V dual-shaft
			1300 RPM	2 oz-in	10:1 LP 6V	10:1 LP 6V dual-shaft
			440 RPM	4 oz-in	30:1 LP 6V	30:1 LP 6V dual-shaft
			250 RPM	7 oz-in	50:1 LP 6V	50:1 LP 6V dual-shaft
			170 RPM	9 oz-in	75:1 LP 6V	75:1 LP 6V dual-shaft
			120 RPM	12 oz-in	100:1 LP 6V	100:1 LP 6V dual-shaft
			85 RPM	17 oz-in	150:1 LP 6V	150:1 LP 6V dual-shaft
			60 RPM	27 oz-in	210:1 LP 6V	210:1 LP 6V dual-shaft
			50 RPM	32 oz-in	250:1 LP 6V	250:1 LP 6V dual-shaft
			45 RPM	40 oz-in	298:1 LP 6V	298:1 LP 6V dual-shaft
			14 RPM	70 oz-in	1000:1 LP 6V	1000:1 LP 6V dual-shaft

Note: Stalling or overloading gearmotors can greatly decrease their lifetimes and even result in immediate damage. The recommended upper limit for instantaneous torque is 35 oz-in (2.5 kg-cm) for the 1000:1 gearboxes and 25 oz-in (2 kg*cm) for all the other gear ratios; we strongly advise keeping applied loads well under this limit. Stalls can also result in rapid (potentially on the order of seconds) thermal damage to the motor windings and brushes, especially for the versions that use high-power (HP and HPCB) motors; a general recommendation for brushed DC motor operation is 25% or less of the stall current.

In general, these kinds of motors can run at voltages above and below their nominal voltages; lower voltages might not be practical, and higher voltages could start negatively affecting the life of the motor.

Details for item #3071:

Exact gear ratio: 35×3713×10≈9.96:135×3713×10≈9.96:1

Gearmotor Dimensions:

In terms of size, these gearmotors are very similar to Sanyo’s popular 12 mm NA4S DC gearmotors, and gearmotors with this form factor are occasionally referred to as N20 motors. The versions with carbon brushes (HPCB) have slightly different terminal and end-cap dimensions than the versions with precious metal brushes, but all of the other dimensions are identical.

Dimensions:

General specifications:

Notes:

1 Output shafts add 14 mm to the 26 mm length.

2 D shaft.