SKU: 74870755352

Pololu 100:1 Micro Metal Gearmotor HPCB 12V 3041

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Description

Pololu 100:1 Micro Metal Gearmotor HPCB 12V 3041This gearmotor is a miniature high power, 12 V brushed DC motor with long life carbon brushes and a 100. 37: 1 metal gearbox. It has a cross section of 10 12 mm, and the D shaped gearbox output shaft is 9 mm long and 3 mm in diameter. Key specifications: voltage no load performance stall extrapolation 12 V 330 RPM, 60 mA 1. 3 kgcm (18 ozin), 0. 75 A Overview These tiny brushed DC gearmotors are available in a wide range of gear ratiosfrom 5: 1 up to

This gearmotor is a miniature high-power, 12 V brushed DC motor with long-life carbon brushes and a 100.37:1 metal gearbox. It has a cross section of 10 × 12 mm, and the D-shaped gearbox output shaft is 9 mm long and 3 mm in diameter.

Key specifications:

voltage no-load performance stall extrapolation
12 V 330 RPM, 60 mA 1.3 kg⋅cm (18 oz⋅in), 0.75 A

 

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).

 

 

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 encoders for micro metal gearmotors (see the picture on the right), to provide motor speed or position feedback.

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.

 

Exact gear ratio: (

This gearmotor is a miniature high-power, 12 V brushed DC motor with long-life carbon brushes and a 100.37:1 metal gearbox. It has a cross section of 10 × 12 mm, and the D-shaped gearbox output shaft is 9 mm long and 3 mm in diameter.

Key specifications:

voltage no-load performance stall extrapolation
12 V 330 RPM, 60 mA 1.3 kg⋅cm (18 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].

 

Dimensions

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

General specifications

Gear ratio: 100.37:1
No-load speed @ 12V: 330 rpm
No-load current @ 12V: 0.06 A
Stall current @ 12V: 0.75 A
Stall torque @ 12V: 1.3 kg·cm
Max output power @ 12V: 1.1 W
No-load speed @ 6V: 165 rpm3
No-load current @ 6V: 0.05 A3
Stall current @ 6V: 0.38 A3
Stall torque @ 6V: 0.65 kg·cm3
Extended motor shaft?: N
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: 260 rpm
Torque at max efficiency: 0.29 kg·cm
Current at max efficiency: 0.21 A
Output power at max efficiency: 0.78 W

Notes:

1) Output shaft adds 9 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.

 

Resources


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SKU: 74870755352

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Robert Ezerman
Phoenix, US
★★★★★ 5
Solid unit, not showy 9thank you)
Style: R-S202BL, Configuration: w/o Wire and Plug
FAST!! shipping, complete, well packaged, excellent price for Yamaha durability. Easy hook-up, normal sized manual (thanks again!). Smile, intuitive controls. Base and treble by front-panel pots. I would have paid extra for a lighted remote.
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Reviewed in the United States on July 7, 2024
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terry velasco
Boise, US
★★★★★ 5
sounds good
Style: R-S202BL, Configuration: w/o Wire and Plug
good stereo for a good price
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Reviewed in the United States on August 17, 2025
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Sharreen
Lexington, US
★★★★★ 1
This item was sold at a NEW price and it was CLEARLY USED.
Style: R-S202BL, Configuration: w/o Wire and Plug
Unfortunately I really didn’t get to operate this item due to the fact that it didn’t work. After I connected my speakers and plugged it in, I turned on the power switch and the lights came on, but no sound. No discredit to Yamaha, nor the item... this is on the seller. It was sold at a new price and it was clearly a used item. Upon opening the box, I noticed : 1. The power cord was wrapped with a dirty, pink hair band. 2. The unit was not in plastic like a new item. 3. The FM antenna was missing. 4. The remote had old, used batteries in it. This should not have been re-sold.
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Reviewed in the United States on February 9, 2021
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Bill
Omaha, US
★★★★★ 5
a cult that still goes on...
Style: R-S202BL, Configuration: w/o Wire and Plug
Update in 2023: I have to add that I made this ppurchase via Amazon and it arrived at me in mint condition (Amazon Renewed scheme with 90 days money back guaranteed). For hifi components, if it works for the first quarter, it will then work rest of years. Mine though opened box but mint in sense that both its cosmetics and functions work perfectly. I purchased beefier models of Yamaha same series, the As 301r and As 501r afterwards via Amazon. Other than delicacy, the AR 202 receiver's overall performance is comparable to its leveled up siblings... AR 202 has already become a legend in hifi history since 2018... Yet of course audiophile ears are more picky and won't stay still with this kit. Therefore I purchased the silvery stereo amps afterwards cux I knew prices would go up very high and it is now proven positively and more so... Grab one even if used as ye still may... The AR 202 has an extraordinarily energetic drive in stereo sound given it's the youngest brother in the family. It brought much glory to the whole brand indeed... Review in 2019: "...performs much better than the beefed up version 100v Yamaha A-S301 silver in way of responsive and agile bass, larger soundstage, impressive midrange and fine treble. no wonder it is the best selling amp in 2017 and 2018. i suppose the cult still goes on......"
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Reviewed in the United States on August 7, 2019
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Frank from Baltimore
Natrona Heights, US
★★★★★ 5
Well made, a solid connection.
Size: 6 Pairs / 12 pcs
I liked them. They really lock down on the speaker wire to make a firm connection. They seem well made and are easy to install. My system sounds great.
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Reviewed in the United States on April 1, 2026

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