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75:1 Micro Metal Gearmotor HPCB 6V with Extended Motor Shaft

Pololu item #: 3074
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This is a miniature brushed DC metal gearmotor with a gearbox cross section of 10×12 mm and a 9 mm long, 3 mm diameter D-shaped gearbox output shaft.

motor/brush type	gearbox	encoder
HPCB 6V: high-power 6V with carbon brushes	75.81:1 with brass plates	encoder-compatible (extended motor shaft)

voltage	no-load performance	stall extrapolation*
6 V	430 RPM, 150 mA	1.1 kg⋅cm (15 oz⋅in), 1.5 A
* Note: Stall torque and stall current specifications are theoretical values; stalls could damage the motor or gearbox.

Alternatives available with variations in these parameter(s): gear ratio motor type encoder Select variant…

	Description		Specs (17)		Pictures (17)		Resources (3)		FAQs (2)		On the blog (2)		Distributors (45)

Gear ratio:	75.81:1
No-load speed @ 6V:	430 rpm³
No-load current @ 6V:	0.15 A⁴
Stall current @ 6V:	1.5 A
Stall torque @ 6V:	1.1 kg·cm
Max output power @ 6V:	1.3 W
Encoder:	encoder-compatible (extended motor shaft)
Long-life carbon brushes?:	Y
Motor type:	1.5A stall @ 6V (HPCB 6V - carbon brush)

Max efficiency @ 6V:	34 %
Speed at max efficiency:	330 rpm
Torque at max efficiency:	0.25 kg·cm
Current at max efficiency:	0.43 A
Output power at max efficiency:	0.87 W

1: Output shafts add 15 mm to the 26 mm length. See dimension diagram for details.
2: D shaft.
3: Typical; ±20%.
4: Typical, ±50%; no-load current depends on internal friction, which is affected by many factors, including ambient temperature and duration of motor operation.

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