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15:1 Micro Metal Gearmotor HPCB 12V with Extended Motor Shaft

Pololu item #: 4789
Brand: Pololu supply outlook
Status: Active and Preferred 
RoHS 3 compliant

Price break Unit price (US$)
1 23.45
5 21.57
25 19.85
100 18.26


backorders allowed

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 12V: high-power 12V with carbon brushes 15.25:1 with brass plates encoder-compatible (extended motor shaft)

voltage no-load performance stall extrapolation*
12 V 2200 RPM, 80 mA 0.25 kg⋅cm (3.5 oz⋅in), 0.75 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 (20) Pictures (17) Resources (3) FAQs (0) On the blog (1) 

Dimensions

Size: 10 × 12 × 25 mm1
Weight: 9.5 g
Shaft diameter: 3 mm2

General specifications

Gear ratio: 15.25:1
No-load speed @ 12V: 2200 rpm3
No-load current @ 12V: 0.08 A4
Stall current @ 12V: 0.75 A
Stall torque @ 12V: 0.25 kg·cm
Max output power @ 12V: 1.4 W
No-load speed @ 6V: 1100 rpm5
Stall current @ 6V: 0.38 A5
Stall torque @ 6V: 0.13 kg·cm5
Encoder: encoder-compatible (extended motor shaft)
Long-life carbon brushes?: Y
Motor type: 0.75A stall @ 12V (HPCB 12V - carbon brush)

Performance at maximum efficiency

Max efficiency @ 12V: 37 %
Speed at max efficiency: 1700 rpm
Torque at max efficiency: 0.059 kg·cm
Current at max efficiency: 0.23 A
Output power at max efficiency: 1.0 W

Notes:

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.
5
This motor will run at 6 V but is intended for operation at 12 V.

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