298:1 Micro Metal Gearmotor HPCB 12V with Extended Motor Shaft

298:1 Micro Metal Gearmotor HPCB 12V with Extended Motor Shaft

Motoreductor de relación de engranajes 298:1. Posee una extensión de su eje, lo que permite obtener feedback de posicionamiento con un encoder (no incluído)

COD: P003056

Peso: 0.010 Kg

Disponibilidad: En Stock

Su correo electrónico:

ARS 553.00


El producto no está disponible para la venta en este momento



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.

Key specs at 12 V: 100 RPM and 100 mA with no load, 70 oz-in (5 kg-cm) and 0.8 A at stall.

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).



Versions of these gearmotors are also available with an additional 1 mm-diameter output shaft that protrudes from the rear of the motor. This 4.5 mm-long rear shaft rotates at the same speed as the input to the gearbox and offers a way to add an encoder, such as our magnetic encoder for micro metal gearmotors (see the picture on the right), to provide motor speed or position feedback.

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 of versions with carbon brushes (HPCB):

Dimensions of the Pololu micro metal gearmotors with carbon brushes (HPCB). Units are mm over [inches].


Size: 10 × 12 × 26 mm
Weight: 9.5 g
Shaft diameter: 3 mm

General specifications:

Gear ratio: 100.37:1
Free-run speed @ 6V: 320 rpm
Free-run current @ 6V: 120 mA
Stall current @ 6V: 1600 mA
Stall torque @ 6V: 30 oz·in
Extended motor shaft?: Y
Long-life carbon brushes?: Y
Motor type: 1.6A stall @ 6V (HPCB 6V - carbon brush)

More Information!!:These diagrams are also available as a downloadable PDF (262k pdf).


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