Sale! 380:1 Micro Metal Gearmotor HPCB 12V with Extended Motor Shaft View larger

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380:1 Micro Metal Gearmotor HPCB 12V with Extended Motor Shaft

0104110000061867

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This gearmotor is a miniature high-power, 12 V brushed DC motor with long-life carbon brushes and a 379.17:1 metal gearbox. This version has stainless steel gearbox plates instead of the standard brass ones for increased durability and resistance to wear from radial loads. It has a cross section of 10 x 12 mm, and the D-shaped gearbox output shaft is 9 mm long and 3 mm in diameter. This version also has a 4.5 x 1 mm extended motor shaft.

Key specifications:

voltage no-load performance stall extrapolation
12 V 85 RPM, 60 mA 5.0 kg⋅cm (69 oz⋅in), 0.75 A


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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).


Please see the micro metal gearmotor datasheet (2MB pdf) for more information, including detailed performance graphs for each micro metal gearmotor version.

Note: Stalling or overloading gearmotors can greatly decrease their lifetimes and even result in immediate damage. The recommended upper limit for instantaneous torque is 2.5 kg-cm (35 oz-in) for the 380:1 and 1000:1 gearboxes, and 2 kg-cm (25 oz-in) 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

This gearmotor is a miniature high-power, 12 V brushed DC motor with long-life carbon brushes and a 379.17:1 metal gearbox. This version has stainless steel gearbox plates instead of the standard brass ones for increased durability and resistance to wear from radial loads. It has a cross section of 10 x 12 mm, and the D-shaped gearbox output shaft is 9 mm long and 3 mm in diameter. This version also has a 4.5 x 1 mm extended motor shaft.

Key specifications:

voltage no-load performance stall extrapolation
12 V 85 RPM, 60 mA 5.0 kg⋅cm (69 oz⋅in), 0.75 A


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].


Dimensions of versions with precious metal brushes (LP, MP, and HP)


Dimensions of the Pololu micro metal gearmotors with precious metal brushes: low-power (LP), medium-power (MP), and high-power (HP). Units are mm over [inches].

These diagrams are also available as a downloadable PDF (262k pdf).


Selecting the Right Gearmotor

We offer a wide selection of metal gearmotors that offer different combinations of speed and torque.


Specifications

Dimensions

Size: 10 x 12 x 26 mm1
Weight: 9.5 g
Shaft diameter: 3 mm2


General specifications

Gear ratio: 379.17:1
No-load speed @ 12V: 85 rpm
No-load current @ 12V: 0.06 A
Stall current @ 12V: 0.75 A
Stall torque @ 12V: 5.0 kg·cm
Max output power @ 12V: 1.1 W
No-load speed @ 6V: 43 rpm3
No-load current @ 6V: 0.05 A3
Stall current @ 6V: 0.38 A3
Stall torque @ 6V: 2.5 kg·cm3
Extended motor shaft?: Y
Long-life carbon brushes?: Y
Motor type: 0.75A stall @ 12V (HPCB 12V - carbon brush)


Performance at maximum efficiency

Max efficiency @ 12V: 31 %
Speed at max efficiency: 67 rpm
Torque at max efficiency: 1.1 kg·cm
Current at max efficiency: 0.20 A
Output power at max efficiency: 0.75 W


Notes:

1 Output shafts add 14 mm to the 26 mm length.
2 D shaft.
3 This motor will run at 6 V but is intended for operation at 12 V.


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380:1 Micro Metal Gearmotor HPCB 12V with Extended Motor Shaft

380:1 Micro Metal Gearmotor HPCB 12V with Extended Motor Shaft

This gearmotor is a miniature high-power, 12 V brushed DC motor with long-life carbon brushes and a 379.17:1 metal gearbox. This version has stainless steel gearbox plates instead of the standard brass ones for increased durability and resistance to wear from radial loads. It has a cross section of 10 x 12 mm, and the D-shaped gearbox output shaft is 9 mm long and 3 mm in diameter. This version also has a 4.5 x 1 mm extended motor shaft.

Key specifications:

voltage no-load performance stall extrapolation
12 V 85 RPM, 60 mA 5.0 kg⋅cm (69 oz⋅in), 0.75 A


See description for more details about the product.

Add to cart now!

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