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# 100:1 Micro Metal Gearmotor HPCB 6V with Extended Motor Shaft

**Type:** Product page · **SKU:** POLOLU-3075 · **Brand:** [Pololu](https://core-electronics.com.au/brands/pololu-australia)
**Page:** https://core-electronics.com.au/100-1-micro-metal-gearmotor-hpcb-6v-with-extended-motor-shaft.html ([markdown](https://core-electronics.com.au/100-1-micro-metal-gearmotor-hpcb-6v-with-extended-motor-shaft.html.md))

This gearmotor is a miniature high-power, 6 V brushed DC motor with long-life carbon brushes and a 100.37:1 metal gearbox. It has a cross section of...

## Pricing

- **Price:** $45.30 (inc GST) — $41.18 AUD, exc GST
- **Quantity discounts:** 10+ $39.54 (exc GST) · 25+ $38.30 (exc GST)

## Availability & dispatch

- In stock, ships same business day if ordered before 2PM (Australia/Sydney).
- We can dispatch 2 today, and up to 200 more in 4–7 days.

## How to buy

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- **Payment methods, purchase orders, policies and contact details:** https://core-electronics.com.au/llms.txt
## Description

Pololu's Micro Metal Gearmotor family consists of tiny brushed DC metal gearmotors with nitride-hardened martensitic stainless steel gears in a wide range of gear ratios, motor windings, brushes, and encoder configurations:

| [![](https://a.pololu-files.com/picture/0J12476.300.jpg?69c415d3139845b75101ff4491a09cd8)](https://a.pololu-files.com/picture/0J12476.1200.jpg?69c415d3139845b75101ff4491a09cd8) |
|---|
| Micro Metal Gearmotor next to a Pololu quarter dollar for size reference. |

| Gear ratio options | Motor winding/brush options | Encoder options |
|---|---|---|
| - 5:1 - 10:1 - 15:1 - 30:1 - 50:1 - 75:1 - 100:1 - 150:1 - 210:1 - 250:1 - 298:1 - 380:1 - 1000:1 | - **HPCB 12V:** high-power 12V     with long-life carbon brushes - **HPCB 6V:** high-power 6V     with long-life carbon brushes - **HP 6V:** high-power 6V     with precious metal brushes - **MP 6V:** medium-power 6V     with precious metal brushes - **LP 6V:** low-power 6V     with precious metal brushes | - integrated 12 CPR quadrature encoder     with back connector - integrated 12 CPR quadrature encoder     with side connector - encoder-compatible (extended motor shaft     for adding an encoder) - no encoder |

The following comparison table shows basic specifications for all of the available versions (see the Micro Metal Gearmotor datasheet (5MB pdf) for additional information, including detailed performance graphs):

| Rated Voltage | Stall Current | No-Load Current | No-Load Speed (RPM) | Extrapolated Stall Torque | Max Power (W) | Approx Gear Ratio | ![](https://a.pololu-files.com/picture/0J12477.90x76.jpg?4c91aeac1932e69a79d496bb79a41e6f)  No Encoder | ![](https://a.pololu-files.com/picture/0J12478.94x76.jpg?567e81f6f9e0f794ac70fd41793e2f13) w/ Extended Motor Shaft | ![](https://a.pololu-files.com/picture/0J12416.100x76.jpg?24ae99dd41ad8868afe8c366d9a0cd9c) w/ Encoder, Back Conn. | ![](https://a.pololu-files.com/picture/0J12418.85x76.jpg?8f026fe1675b1109ea574290d3d26081) w/ Encoder, Side Conn. |
|---|---|---|---|---|---|---|---|---|---|---|
| (kg·cm) | (oz·in) |
|  |
| **HPCB 12V** (high-power, carbon brushes) |
|  |
| **12 V** | 0.75 A | 100 mA | 6800 | 0.09 | 1.3 | – | 5:1 | [\#3036](https://core-electronics.com.au/5-1-micro-metal-gearmotor-hpcb-12v.html) | [\#3047](https://core-electronics.com.au/5-1-micro-metal-gearmotor-hpcb-12v-with-extended-motor-shaft.html) | [\#5204](https://core-electronics.com.au/51-micro-metal-gearmotor-hpcb-12v-with-12-cpr-encoder-back-connector.html) | [\#5205](https://core-electronics.com.au/51-micro-metal-gearmotor-hpcb-12v-with-12-cpr-encoder-side-connector.html) |
| 80 mA | 3400 | 0.17 | 2.4 | 1.5 | 10:1 | [\#3037](https://core-electronics.com.au/10-1-micro-metal-gearmotor-hpcb-12v.html) | [\#3048](https://core-electronics.com.au/10-1-micro-metal-gearmotor-hpcb-12v-with-extended-motor-shaft.html) | [\#5206](https://core-electronics.com.au/101-micro-metal-gearmotor-hpcb-12v-with-12-cpr-encoder-back-connector.html) | [\#5207](https://core-electronics.com.au/101-micro-metal-gearmotor-hpcb-12v-with-12-cpr-encoder-side-connector.html) |
| 2200 | 0.25 | 3.5 | 1.4 | 15:1 | [\#4788](https://core-electronics.com.au/15-1-micro-metal-gearmotor-hpcb-12v.html) | [\#4789](https://core-electronics.com.au/15-1-micro-metal-gearmotor-hpcb-12v-with-extended-motor-shaft.html) | [\#5208](https://core-electronics.com.au/151-micro-metal-gearmotor-hpcb-12v-with-12-cpr-encoder-back-connector.html) | [\#5209](https://core-electronics.com.au/151-micro-metal-gearmotor-hpcb-12v-with-12-cpr-encoder-side-connector.html) |
| 1100 | 0.39 | 5.4 | 1.1 | 30:1 | [\#3038](https://core-electronics.com.au/30-1-micro-metal-gearmotor-hpcb-12v.html) | [\#3049](https://core-electronics.com.au/30-1-micro-metal-gearmotor-hpcb-12v-with-extended-motor-shaft.html) | [\#5210](https://core-electronics.com.au/301-micro-metal-gearmotor-hpcb-12v-with-12-cpr-encoder-back-connector.html) | [\#5211](https://core-electronics.com.au/301-micro-metal-gearmotor-hpcb-12v-with-12-cpr-encoder-side-connector.html) |
| 650 | 0.67 | 9.3 | 1.1 | 50:1 | [\#3039](https://core-electronics.com.au/50-1-micro-metal-gearmotor-hpcb-12v.html) | [\#3050](https://core-electronics.com.au/50-1-micro-metal-gearmotor-hpcb-12v-with-extended-motor-shaft.html) | [\#5212](https://core-electronics.com.au/501-micro-metal-gearmotor-hpcb-12v-with-12-cpr-encoder-back-connector.html) | [\#5213](https://core-electronics.com.au/501-micro-metal-gearmotor-hpcb-12v-with-12-cpr-encoder-side-connector.html) |
| 450 | 1.0 | 14 | 1.1 | 75:1 | [\#3040](https://core-electronics.com.au/75-1-micro-metal-gearmotor-hpcb-12v.html) | [\#3051](https://core-electronics.com.au/75-1-micro-metal-gearmotor-hpcb-12v-with-extended-motor-shaft.html) | [\#5214](https://core-electronics.com.au/751-micro-metal-gearmotor-hpcb-12v-with-12-cpr-encoder-back-connector.html) | [\#5215](https://core-electronics.com.au/751-micro-metal-gearmotor-hpcb-12v-with-12-cpr-encoder-side-connector.html) |
| 330 | 1.3 | 18 | 1.1 | 100:1 | [\#3041](https://core-electronics.com.au/100-1-micro-metal-gearmotor-hpcb-12v.html) | [\#3052](https://core-electronics.com.au/100-1-micro-metal-gearmotor-hpcb-12v-with-extended-motor-shaft.html) | [\#5216](https://core-electronics.com.au/1001-micro-metal-gearmotor-hpcb-12v-with-12-cpr-encoder-back-connector.html) | [\#5217](https://core-electronics.com.au/1001-micro-metal-gearmotor-hpcb-12v-with-12-cpr-encoder-side-connector.html) |
| 220 | 1.8 | 25 | 1.0 | 150:1 | [\#3042](https://core-electronics.com.au/150-1-micro-metal-gearmotor-hpcb-12v.html) | [\#3053](https://core-electronics.com.au/150-1-micro-metal-gearmotor-hpcb-12v-with-extended-motor-shaft.html) | [\#5218](https://core-electronics.com.au/1501-micro-metal-gearmotor-hpcb-12v-with-12-cpr-encoder-back-connector.html) | [\#5219](https://core-electronics.com.au/1501-micro-metal-gearmotor-hpcb-12v-with-12-cpr-encoder-side-connector.html) |
| 160 | 2.5 | 35 | 1.0 | 210:1 | [\#3043](https://core-electronics.com.au/210-1-micro-metal-gearmotor-hpcb-12v.html) | [\#3054](https://core-electronics.com.au/210-1-micro-metal-gearmotor-hpcb-12v-with-extended-motor-shaft.html) | [\#5220](https://core-electronics.com.au/2101-micro-metal-gearmotor-hpcb-12v-with-12-cpr-encoder-back-connector.html) | [\#5221](https://core-electronics.com.au/2101-micro-metal-gearmotor-hpcb-12v-with-12-cpr-encoder-side-connector.html) |
| 130 | 3.0 | 42 | 1.1 | 250:1 | [\#3044](https://core-electronics.com.au/250-1-micro-metal-gearmotor-hpcb-12v.html) | [\#3055](https://core-electronics.com.au/250-1-micro-metal-gearmotor-hpcb-12v-with-extended-motor-shaft.html) | [\#5222](https://core-electronics.com.au/2501-micro-metal-gearmotor-hpcb-12v-with-12-cpr-encoder-back-connector.html) | [\#5223](https://core-electronics.com.au/2501-micro-metal-gearmotor-hpcb-12v-with-12-cpr-encoder-side-connector.html) |
| 110 | 3.3 | 46 | 1.0 | 298:1 | [\#3045](https://core-electronics.com.au/298-1-micro-metal-gearmotor-hpcb-12v.html) | [\#3056](https://core-electronics.com.au/298-1-micro-metal-gearmotor-hpcb-12v-with-extended-motor-shaft.html) | [\#5224](https://core-electronics.com.au/2981-micro-metal-gearmotor-hpcb-12v-with-12-cpr-encoder-back-connector.html) | [\#5225](https://core-electronics.com.au/2981-micro-metal-gearmotor-hpcb-12v-with-12-cpr-encoder-side-connector.html) |
| 85 | 5.0 | 69 | 1.1 | 380:1 | [\#4798](https://core-electronics.com.au/380-1-micro-metal-gearmotor-hpcb-12v.html) | [\#4799](https://core-electronics.com.au/380-1-micro-metal-gearmotor-hpcb-12v-with-extended-motor-shaft.html) | [\#5226](https://core-electronics.com.au/3801-micro-metal-gearmotor-hpcb-12v-with-12-cpr-encoder-back-connector.html) | [\#5227](https://core-electronics.com.au/3801-micro-metal-gearmotor-hpcb-12v-with-12-cpr-encoder-side-connector.html) |
| 35 | 10 | 140 | – | 1000:1 | [\#3046](https://core-electronics.com.au/1000-1-micro-metal-gearmotor-hpcb-12v.html) | [\#3057](https://core-electronics.com.au/1000-1-micro-metal-gearmotor-hpcb-12v-with-extended-motor-shaft.html) | [\#5228](https://core-electronics.com.au/10001-micro-metal-gearmotor-hpcb-12v-with-12-cpr-encoder-back-connector.html) | [\#5229](https://core-electronics.com.au/10001-micro-metal-gearmotor-hpcb-12v-with-12-cpr-encoder-side-connector.html) |
|  |
|  |
| Rated Voltage | Stall Current | No-Load Current | No-Load Speed (RPM) | Extrapolated Stall Torque | Max Power (W) | Approx Gear Ratio | No Encoder | w/ Extended Motor Shaft | w/ Encoder, Back Conn. | w/ Encoder, Side Conn. |
| (kg·cm) | (oz·in) |
|  |
| **HPCB 6V** (high-power, carbon brushes) |
|  |
| **6 V** | 1.5 A | 170 mA | 6500 | 0.09 | 1.3 | – | 5:1 | [\#3060](https://core-electronics.com.au/5-1-micro-metal-gearmotor-hpcb-6v.html) | [\#3082](https://core-electronics.com.au/5-1-micro-metal-gearmotor-hpcb-6v-with-extended-motor-shaft.html) | [\#5178](https://core-electronics.com.au/51-micro-metal-gearmotor-hpcb-6v-with-12-cpr-encoder-back-connector.html) | [\#5179](https://core-electronics.com.au/51-micro-metal-gearmotor-hpcb-6v-with-12-cpr-encoder-side-connector.html) |
| 150 mA | 3300 | 0.17 | 2.4 | 1.3 | 10:1 | [\#3061](https://core-electronics.com.au/10-1-micro-metal-gearmotor-hpcb-6v.html) | [\#3071](https://core-electronics.com.au/10-1-micro-metal-gearmotor-hpcb-6v-with-extended-motor-shaft.html) | [\#5180](https://core-electronics.com.au/101-micro-metal-gearmotor-hpcb-6v-with-12-cpr-encoder-back-connector.html) | [\#5181](https://core-electronics.com.au/101-micro-metal-gearmotor-hpcb-6v-with-12-cpr-encoder-side-connector.html) |
| 2100 | 0.25 | 3.5 | 1.3 | 15:1 | [\#4786](https://core-electronics.com.au/15-1-micro-metal-gearmotor-hpcb-6v.html) | [\#4787](https://core-electronics.com.au/15-1-micro-metal-gearmotor-hpcb-6v-with-extended-motor-shaft.html) | [\#5182](https://core-electronics.com.au/151-micro-metal-gearmotor-hpcb-6v-with-12-cpr-encoder-back-connector.html) | [\#5183](https://core-electronics.com.au/151-micro-metal-gearmotor-hpcb-6v-with-12-cpr-encoder-side-connector.html) |
| 1100 | 0.45 | 6.2 | 1.2 | 30:1 | [\#3062](https://core-electronics.com.au/30-1-micro-metal-gearmotor-hpcb-6v.html) | [\#3072](https://core-electronics.com.au/30-1-micro-metal-gearmotor-hpcb-6v-with-extended-motor-shaft.html) | [\#5184](https://core-electronics.com.au/301-micro-metal-gearmotor-hpcb-6v-with-12-cpr-encoder-back-connector.html) | [\#5185](https://core-electronics.com.au/301-micro-metal-gearmotor-hpcb-6v-with-12-cpr-encoder-side-connector.html) |
| 650 | 0.74 | 10 | 1.2 | 50:1 | [\#3063](https://core-electronics.com.au/50-1-micro-metal-gearmotor-hpcb-6v.html) | [\#3073](https://core-electronics.com.au/50-1-micro-metal-gearmotor-hpcb-6v-with-extended-motor-shaft.html) | [\#5186](https://core-electronics.com.au/501-micro-metal-gearmotor-hpcb-6v-with-12-cpr-encoder-back-connector.html) | [\#5187](https://core-electronics.com.au/501-micro-metal-gearmotor-hpcb-6v-with-12-cpr-encoder-side-connector.html) |
| 430 | 1.1 | 15 | 1.3 | 75:1 | [\#3064](https://core-electronics.com.au/75-1-micro-metal-gearmotor-hpcb-6v.html) | [\#3074](https://core-electronics.com.au/pololu-75-1-micro-metal-gearmotor-hpcb-6v-with-extended-motor-shaft.html) | [\#5188](https://core-electronics.com.au/751-micro-metal-gearmotor-hpcb-6v-with-12-cpr-encoder-back-connector.html) | [\#5189](https://core-electronics.com.au/751-micro-metal-gearmotor-hpcb-6v-with-12-cpr-encoder-side-connector.html) |
| 330 | 1.6 | 22 | 1.3 | 100:1 | [\#3065](https://core-electronics.com.au/100-1-micro-metal-gearmotor-hpcb-6v.html) | [\#3075](https://core-electronics.com.au/100-1-micro-metal-gearmotor-hpcb-6v-with-extended-motor-shaft.html) | [\#5190](https://core-electronics.com.au/1001-micro-metal-gearmotor-hpcb-6v-with-12-cpr-encoder-back-connector.html) | [\#5191](https://core-electronics.com.au/1001-micro-metal-gearmotor-hpcb-6v-with-12-cpr-encoder-side-connector.html) |
| 220 | 2.0 | 28 | 1.1 | 150:1 | [\#3066](https://core-electronics.com.au/150-1-micro-metal-gearmotor-hpcb-6v.html) | [\#3076](https://core-electronics.com.au/150-1-micro-metal-gearmotor-hpcb-6v-with-extended-motor-shaft.html) | [\#5192](https://core-electronics.com.au/1501-micro-metal-gearmotor-hpcb-6v-with-12-cpr-encoder-back-connector.html) | [\#5193](https://core-electronics.com.au/1501-micro-metal-gearmotor-hpcb-6v-with-12-cpr-encoder-side-connector.html) |
| 160 | 2.8 | 39 | 1.1 | 210:1 | [\#3067](https://core-electronics.com.au/210-1-micro-metal-gearmotor-hpcb-6v.html) | [\#3077](https://core-electronics.com.au/210-1-micro-metal-gearmotor-hpcb-6v-with-extended-motor-shaft.html) | [\#5194](https://core-electronics.com.au/2101-micro-metal-gearmotor-hpcb-6v-with-12-cpr-encoder-back-connector.html) | [\#5195](https://core-electronics.com.au/2101-micro-metal-gearmotor-hpcb-6v-with-12-cpr-encoder-side-connector.html) |
| 130 | 3.2 | 44 | 1.1 | 250:1 | [\#3068](https://core-electronics.com.au/250-1-micro-metal-gearmotor-hpcb-6v.html) | [\#3078](https://core-electronics.com.au/250-1-micro-metal-gearmotor-hpcb-6v-with-extended-motor-shaft.html) | [\#5196](https://core-electronics.com.au/2501-micro-metal-gearmotor-hpcb-6v-with-12-cpr-encoder-back-connector.html) | [\#5197](https://core-electronics.com.au/2501-micro-metal-gearmotor-hpcb-6v-with-12-cpr-encoder-side-connector.html) |
| 110 | 3.4 | 47 | 1.0 | 298:1 | [\#3069](https://core-electronics.com.au/298-1-micro-metal-gearmotor-hpcb-6v.html) | [\#3079](https://core-electronics.com.au/298-1-micro-metal-gearmotor-hpcb-6v-with-extended-motor-shaft.html) | [\#5198](https://core-electronics.com.au/2981-micro-metal-gearmotor-hpcb-6v-with-12-cpr-encoder-back-connector.html) | [\#5199](https://core-electronics.com.au/2981-micro-metal-gearmotor-hpcb-6v-with-12-cpr-encoder-side-connector.html) |
| 85 | 5.0 | 69 | 1.1 | 380:1 | [\#4796](https://core-electronics.com.au/pololu-micro-metal-gearmotor-hpcb-6v-380-1.html) | [\#4797](https://core-electronics.com.au/380-1-micro-metal-gearmotor-hpcb-6v-with-extended-motor-shaft.html) | [\#5200](https://core-electronics.com.au/3801-micro-metal-gearmotor-hpcb-6v-with-12-cpr-encoder-back-connector.html) | [\#5201](https://core-electronics.com.au/3801-micro-metal-gearmotor-hpcb-6v-with-12-cpr-encoder-side-connector.html) |
| 33 | 11 | 150 | – | 1000:1 | [\#3070](https://core-electronics.com.au/1000-1-micro-metal-gearmotor-hpcb-6v.html) | [\#3080](https://core-electronics.com.au/1000-1-micro-metal-gearmotor-hpcb-6v-with-extended-motor-shaft.html) | [\#5202](https://core-electronics.com.au/10001-micro-metal-gearmotor-hpcb-6v-with-12-cpr-encoder-back-connector.html) | [\#5203](https://core-electronics.com.au/10001-micro-metal-gearmotor-hpcb-6v-with-12-cpr-encoder-side-connector.html) |
|  |
|  |
| Rated Voltage | Stall Current | No-Load Current | No-Load Speed (RPM) | Extrapolated Stall Torque | Max Power (W) | Approx Gear Ratio | No Encoder | w/ Extended Motor Shaft | w/ Encoder, Back Conn. | w/ Encoder, Side Conn. |
| (kg·cm) | (oz·in) |
|  |
| **HP 6V** (high-power) |
|  |
| **6 V** | 1.6 A | 120 mA | 6100 | 0.11 | 1.5 | – | 5:1 | [\#1000](https://core-electronics.com.au/5-1-micro-metal-gearmotor-hp.html) | [\#2210](https://core-electronics.com.au/5-1-micro-metal-gearmotor-hp-6v-with-extended-motor-shaft.html) | [\#5152](https://core-electronics.com.au/51-micro-metal-gearmotor-hp-6v-with-12-cpr-encoder-back-connector.html) | [\#5153](https://core-electronics.com.au/51-micro-metal-gearmotor-hp-6v-with-12-cpr-encoder-side-connector.html) |
| 100 mA | 3100 | 0.22 | 3.0 | 1.6 | 10:1 | [\#999](https://core-electronics.com.au/10-1-micro-metal-gearmotor-hp.html) | [\#2211](https://core-electronics.com.au/10-1-micro-metal-gearmotor-hp-with-extended-motor-shaft.html) | [\#5154](https://core-electronics.com.au/101-micro-metal-gearmotor-hp-6v-with-12-cpr-encoder-back-connector.html) | [\#5155](https://core-electronics.com.au/101-micro-metal-gearmotor-hp-6v-with-12-cpr-encoder-side-connector.html) |
| 2000 | 0.30 | 4.2 | 1.5 | 15:1 | [\#4784](https://core-electronics.com.au/15-1-micro-metal-gearmotor-hp-6v.html) | [\#4785](https://core-electronics.com.au/15-1-micro-metal-gearmotor-hp-6v-with-extended-motor-shaft.html) | [\#5156](https://core-electronics.com.au/151-micro-metal-gearmotor-hp-6v-with-12-cpr-encoder-back-connector.html) | [\#5157](https://core-electronics.com.au/151-micro-metal-gearmotor-hp-6v-with-12-cpr-encoder-side-connector.html) |
| 1000 | 0.57 | 7.9 | 1.5 | 30:1 | [\#1093](https://core-electronics.com.au/30-1-micro-metal-gearmotor-hp.html) | [\#2212](https://core-electronics.com.au/30-1-micro-metal-gearmotor-hp-with-extended-motor-shaft.html) | [\#5158](https://core-electronics.com.au/301-micro-metal-gearmotor-hp-6v-with-12-cpr-encoder-back-connector.html) | [\#5159](https://core-electronics.com.au/301-micro-metal-gearmotor-hp-6v-with-12-cpr-encoder-side-connector.html) |
| 590 | 0.86 | 12 | 1.3 | 50:1 | [\#998](https://core-electronics.com.au/50-1-micro-metal-gearmotor-hp.html) | [\#2213](https://core-electronics.com.au/50-1-micro-metal-gearmotor-hp-with-extended-motor-shaft.html) | [\#5160](https://core-electronics.com.au/501-micro-metal-gearmotor-hp-6v-with-12-cpr-encoder-back-connector.html) | [\#5161](https://core-electronics.com.au/501-micro-metal-gearmotor-hp-6v-with-12-cpr-encoder-side-connector.html) |
| 410 | 1.3 | 18 | 1.4 | 75:1 | [\#2361](https://core-electronics.com.au/75-1-micro-metal-gearmotor-hp.html) | [\#2215](https://core-electronics.com.au/75-1-micro-metal-gearmotor-hp-with-extended-motor-shaft.html) | [\#5162](https://core-electronics.com.au/751-micro-metal-gearmotor-hp-6v-with-12-cpr-encoder-back-connector.html) | [\#5163](https://core-electronics.com.au/751-micro-metal-gearmotor-hp-6v-with-12-cpr-encoder-side-connector.html) |
| 310 | 1.7 | 24 | 1.3 | 100:1 | [\#1101](https://core-electronics.com.au/100-1-micro-metal-gearmotor-hp.html) | [\#2214](https://core-electronics.com.au/100-1-micro-metal-gearmotor-hp-with-extended-motor-shaft.html) | [\#5164](https://core-electronics.com.au/1001-micro-metal-gearmotor-hp-6v-with-12-cpr-encoder-back-connector.html) | [\#5165](https://core-electronics.com.au/1001-micro-metal-gearmotor-hp-6v-with-12-cpr-encoder-side-connector.html) |
| 210 | 2.4 | 33 | 1.2 | 150:1 | [\#997](https://core-electronics.com.au/150-1-micro-metal-gearmotor-hp.html) | [\#2386](https://core-electronics.com.au/150-1-micro-metal-gearmotor-hp-6v-with-extended-motor-shaft.html) | [\#5166](https://core-electronics.com.au/1501-micro-metal-gearmotor-hp-6v-with-12-cpr-encoder-back-connector.html) | [\#5167](https://core-electronics.com.au/1501-micro-metal-gearmotor-hp-6v-with-12-cpr-encoder-side-connector.html) |
| 150 | 3.0 | 42 | 1.1 | 210:1 | [\#996](https://core-electronics.com.au/210-1-micro-metal-gearmotor-hp.html) | [\#2216](https://core-electronics.com.au/210-1-micro-metal-gearmotor-hp-6v-with-extended-motor-shaft.html) | [\#5168](https://core-electronics.com.au/2101-micro-metal-gearmotor-hp-6v-with-12-cpr-encoder-back-connector.html) | [\#5169](https://core-electronics.com.au/2101-micro-metal-gearmotor-hp-6v-with-12-cpr-encoder-side-connector.html) |
| 120 | 3.4 | 47 | 1.1 | 250:1 | [\#995](https://core-electronics.com.au/250-1-micro-metal-gearmotor-hp.html) | [\#2217](https://core-electronics.com.au/250-1-micro-metal-gearmotor-hp-6v-with-extended-motor-shaft.html) | [\#5170](https://core-electronics.com.au/2501-micro-metal-gearmotor-hp-6v-with-12-cpr-encoder-back-connector.html) | [\#5171](https://core-electronics.com.au/2501-micro-metal-gearmotor-hp-6v-with-12-cpr-encoder-side-connector.html) |
| 100 | 4.0 | 56 | 1.1 | 298:1 | [\#994](https://core-electronics.com.au/298-1-micro-metal-gearmotor-hp.html) | [\#2218](https://core-electronics.com.au/298-1-micro-metal-gearmotor-hp-with-extended-motor-shaft.html) | [\#5172](https://core-electronics.com.au/2981-micro-metal-gearmotor-hp-6v-with-12-cpr-encoder-back-connector.html) | [\#5173](https://core-electronics.com.au/2981-micro-metal-gearmotor-hp-6v-with-12-cpr-encoder-side-connector.html) |
| 84 | 5.5 | 76 | 1.1 | 380:1 | [\#4794](https://core-electronics.com.au/380-1-micro-metal-gearmotor-hp-6v.html) | [\#4795](https://core-electronics.com.au/380-1-micro-metal-gearmotor-hp-6v-with-extended-motor-shaft.html) | [\#5174](https://core-electronics.com.au/3801-micro-metal-gearmotor-hp-6v-with-12-cpr-encoder-back-connector.html) | [\#5175](https://core-electronics.com.au/3801-micro-metal-gearmotor-hp-6v-with-12-cpr-encoder-side-connector.html) |
| 31 | 12 | 170 | – | 1000:1 | [\#1595](https://core-electronics.com.au/1000-1-micro-metal-gearmotor-hp.html) | [\#2373](https://core-electronics.com.au/1000-1-micro-metal-gearmotor-hp-6v-with-extended-motor-shaft.html) | [\#5176](https://core-electronics.com.au/10001-micro-metal-gearmotor-hp-6v-with-12-cpr-encoder-back-connector.html) | [\#5177](https://core-electronics.com.au/10001-micro-metal-gearmotor-hp-6v-with-12-cpr-encoder-side-connector.html) |
|  |
|  |
| Rated Voltage | Stall Current | No-Load Current | No-Load Speed (RPM) | Extrapolated Stall Torque | Max Power (W) | Approx Gear Ratio | No Encoder | w/ Extended Motor Shaft | w/ Encoder, Back Conn. | w/ Encoder, Side Conn. |
| (kg·cm) | (oz·in) |
|  |
| **MP 6V** (medium-power) |
|  |
| **6 V** | 0.67 A | 80 mA | 4400 | 0.06 | 0.8 | – | 5:1 | [\#2362](https://core-electronics.com.au/5-1-micro-metal-gearmotor-mp-6v.html) | [\#2376](https://core-electronics.com.au/5-1-micro-metal-gearmotor-mp-6v-with-extended-motor-shaft.html) | [\#5126](https://core-electronics.com.au/51-micro-metal-gearmotor-mp-6v-with-12-cpr-encoder-back-connector.html) | [\#5127](https://core-electronics.com.au/51-micro-metal-gearmotor-mp-6v-with-12-cpr-encoder-side-connector.html) |
| 70 mA | 2200 | 0.11 | 1.5 | – | 10:1 | [\#2363](https://core-electronics.com.au/10-1-micro-metal-gearmotor-mp.html) | [\#2377](https://core-electronics.com.au/10-1-micro-metal-gearmotor-mp-with-extended-motor-shaft.html) | [\#5128](https://core-electronics.com.au/101-micro-metal-gearmotor-mp-6v-with-12-cpr-encoder-back-connector.html) | [\#5129](https://core-electronics.com.au/101-micro-metal-gearmotor-mp-6v-with-12-cpr-encoder-side-connector.html) |
| 1400 | 0.20 | 2.8 | 0.70 | 15:1 | [\#4782](https://core-electronics.com.au/15-1-micro-metal-gearmotor-mp-6v.html) | [\#4783](https://core-electronics.com.au/15-1-micro-metal-gearmotor-mp-6v-with-extended-motor-shaft.html) | [\#5130](https://core-electronics.com.au/151-micro-metal-gearmotor-mp-6v-with-12-cpr-encoder-back-connector.html) | [\#5131](https://core-electronics.com.au/151-micro-metal-gearmotor-mp-6v-with-12-cpr-encoder-side-connector.html) |
| 720 | 0.33 | 4.6 | 0.57 | 30:1 | [\#2364](https://core-electronics.com.au/30-1-micro-metal-gearmotor-mp.html) | [\#2378](https://core-electronics.com.au/30-1-micro-metal-gearmotor-mp-6v-with-extended-motor-shaft.html) | [\#5132](https://core-electronics.com.au/301-micro-metal-gearmotor-mp-6v-with-12-cpr-encoder-back-connector.html) | [\#5133](https://core-electronics.com.au/301-micro-metal-gearmotor-mp-6v-with-12-cpr-encoder-side-connector.html) |
| 420 | 0.54 | 7.5 | 0.55 | 50:1 | [\#2365](https://core-electronics.com.au/50-1-micro-metal-gearmotor-mp.html) | [\#2379](https://core-electronics.com.au/50-1-micro-metal-gearmotor-mp-6v-with-extended-motor-shaft.html) | [\#5134](https://core-electronics.com.au/501-micro-metal-gearmotor-mp-6v-with-12-cpr-encoder-back-connector.html) | [\#5135](https://core-electronics.com.au/501-micro-metal-gearmotor-mp-6v-with-12-cpr-encoder-side-connector.html) |
| 290 | 0.78 | 11 | 0.54 | 75:1 | [\#2366](https://core-electronics.com.au/75-1-micro-metal-gearmotor-mp.html) | [\#2380](https://core-electronics.com.au/75-1-micro-metal-gearmotor-mp-with-extended-motor-shaft.html) | [\#5136](https://core-electronics.com.au/751-micro-metal-gearmotor-mp-6v-with-12-cpr-encoder-back-connector.html) | [\#5137](https://core-electronics.com.au/751-micro-metal-gearmotor-mp-6v-with-12-cpr-encoder-side-connector.html) |
| 220 | 0.94 | 13 | 0.50 | 100:1 | [\#2367](https://core-electronics.com.au/100-1-micro-metal-gearmotor-mp.html) | [\#2381](https://core-electronics.com.au/100-1-micro-metal-gearmotor-mp-with-extended-motor-shaft.html) | [\#5138](https://core-electronics.com.au/1001-micro-metal-gearmotor-mp-6v-with-12-cpr-encoder-back-connector.html) | [\#5139](https://core-electronics.com.au/1001-micro-metal-gearmotor-mp-6v-with-12-cpr-encoder-side-connector.html) |
| 150 | 1.3 | 18 | 0.48 | 150:1 | [\#2368](https://core-electronics.com.au/150-1-micro-metal-gearmotor-mp.html) | [\#2382](https://core-electronics.com.au/150-1-micro-metal-gearmotor-mp-6v-with-extended-motor-shaft.html) | [\#5140](https://core-electronics.com.au/1501-micro-metal-gearmotor-mp-6v-with-12-cpr-encoder-back-connector.html) | [\#5141](https://core-electronics.com.au/1501-micro-metal-gearmotor-mp-6v-with-12-cpr-encoder-side-connector.html) |
| 100 | 1.7 | 24 | 0.46 | 210:1 | [\#2369](https://core-electronics.com.au/210-1-micro-metal-gearmotor-mp-6v.html) | [\#2383](https://core-electronics.com.au/210-1-micro-metal-gearmotor-mp-6v-with-extended-motor-shaft.html) | [\#5142](https://core-electronics.com.au/2101-micro-metal-gearmotor-mp-6v-with-12-cpr-encoder-back-connector.html) | [\#5143](https://core-electronics.com.au/2101-micro-metal-gearmotor-mp-6v-with-12-cpr-encoder-side-connector.html) |
| 88 | 2.2 | 31 | 0.48 | 250:1 | [\#2370](https://core-electronics.com.au/250-1-micro-metal-gearmotor-mp-6v.html) | [\#2384](https://core-electronics.com.au/250-1-micro-metal-gearmotor-mp-6v-with-extended-motor-shaft.html) | [\#5144](https://core-electronics.com.au/2501-micro-metal-gearmotor-mp-6v-with-12-cpr-encoder-back-connector.html) | [\#5145](https://core-electronics.com.au/2501-micro-metal-gearmotor-mp-6v-with-12-cpr-encoder-side-connector.html) |
| 73 | 2.4 | 33 | 0.44 | 298:1 | [\#2371](https://core-electronics.com.au/298-1-micro-metal-gearmotor-mp.html) | [\#2385](https://core-electronics.com.au/298-1-micro-metal-gearmotor-mp-6v-with-extended-motor-shaft.html) | [\#5146](https://core-electronics.com.au/2981-micro-metal-gearmotor-mp-6v-with-12-cpr-encoder-back-connector.html) | [\#5147](https://core-electronics.com.au/2981-micro-metal-gearmotor-mp-6v-with-12-cpr-encoder-side-connector.html) |
| 57 | 3.6 | 50 | 0.53 | 380:1 | [\#4792](https://core-electronics.com.au/380-1-micro-metal-gearmotor-mp-6v.html) | [\#4793](https://core-electronics.com.au/380-1-micro-metal-gearmotor-mp-6v-with-extended-motor-shaft.html) | [\#5148](https://core-electronics.com.au/3801-micro-metal-gearmotor-mp-6v-with-12-cpr-encoder-back-connector.html) | [\#5149](https://core-electronics.com.au/3801-micro-metal-gearmotor-mp-6v-with-12-cpr-encoder-side-connector.html) |
| 22 | 6.7 | 93 | – | 1000:1 | [\#2372](https://core-electronics.com.au/1000-1-micro-metal-gearmotor-mp-6v.html) | [\#3059](https://core-electronics.com.au/1000-1-micro-metal-gearmotor-mp-6v-with-extended-motor-shaft.html) | [\#5150](https://core-electronics.com.au/10001-micro-metal-gearmotor-mp-6v-with-12-cpr-encoder-back-connector.html) | [\#5151](https://core-electronics.com.au/10001-micro-metal-gearmotor-mp-6v-with-12-cpr-encoder-side-connector.html) |
|  |
|  |
| Rated Voltage | Stall Current | No-Load Current | No-Load Speed (RPM) | Extrapolated Stall Torque | Max Power (W) | Approx Gear Ratio | No Encoder | w/ Extended Motor Shaft | w/ Encoder, Back Conn. | w/ Encoder, Side Conn. |
| (kg·cm) | (oz·in) |
|  |
| **LP 6V** (low-power) |
|  |
| **6 V** | 0.36 A | 50 mA | 2500 | 0.05 | 0.7 | – | 5:1 | [\#1100](https://core-electronics.com.au/5-1-micro-metal-gearmotor.html) | [\#2200](https://core-electronics.com.au/5-1-micro-metal-gearmotor-lp-6v-with-extended-motor-shaft.html) | [\#5100](https://core-electronics.com.au/51-micro-metal-gearmotor-lp-6v-with-12-cpr-encoder-back-connector.html) | [\#5101](https://core-electronics.com.au/51-micro-metal-gearmotor-lp-6v-with-12-cpr-encoder-side-connector.html) |
| 40 mA | 1300 | 0.10 | 1.4 | – | 10:1 | [\#1099](https://core-electronics.com.au/10-1-micro-metal-gearmotor.html) | [\#2201](https://core-electronics.com.au/10-1-micro-metal-gearmotor-lp-6v-with-extended-motor-shaft.html) | [\#5102](https://core-electronics.com.au/101-micro-metal-gearmotor-lp-6v-with-12-cpr-encoder-back-connector.html) | [\#5103](https://core-electronics.com.au/101-micro-metal-gearmotor-lp-6v-with-12-cpr-encoder-side-connector.html) |
| 860 | 0.17 | 2.4 | 0.37 | 15:1 | [\#4780](https://core-electronics.com.au/15-1-micro-metal-gearmotor-lp-6v.html) | [\#4781](https://core-electronics.com.au/15-1-micro-metal-gearmotor-lp-6v-with-extended-motor-shaft.html) | [\#5104](https://core-electronics.com.au/151-micro-metal-gearmotor-lp-6v-with-12-cpr-encoder-back-connector.html) | [\#5105](https://core-electronics.com.au/151-micro-metal-gearmotor-lp-6v-with-12-cpr-encoder-side-connector.html) |
| 450 | 0.29 | 4.0 | 0.31 | 30:1 | [\#993](https://core-electronics.com.au/30-1-micro-metal-gearmotor.html) | [\#2202](https://core-electronics.com.au/30-1-micro-metal-gearmotor-with-extended-motor-shaft.html) | [\#5106](https://core-electronics.com.au/301-micro-metal-gearmotor-lp-6v-with-12-cpr-encoder-back-connector.html) | [\#5107](https://core-electronics.com.au/301-micro-metal-gearmotor-lp-6v-with-12-cpr-encoder-side-connector.html) |
| 270 | 0.44 | 6.1 | 0.29 | 50:1 | [\#1098](https://core-electronics.com.au/50-1-micro-metal-gearmotor.html) | [\#2203](https://core-electronics.com.au/50-1-micro-metal-gearmotor-with-extended-motor-shaft.html) | [\#5108](https://core-electronics.com.au/501-micro-metal-gearmotor-lp-6v-with-12-cpr-encoder-back-connector.html) | [\#5109](https://core-electronics.com.au/501-micro-metal-gearmotor-lp-6v-with-12-cpr-encoder-side-connector.html) |
| 180 | 0.64 | 8.9 | 0.29 | 75:1 | [\#2360](https://core-electronics.com.au/75-1-micro-metal-gearmotor.html) | [\#2209](https://core-electronics.com.au/75-1-micro-metal-gearmotor-lp-6v-with-extended-motor-shaft.html) | [\#5110](https://core-electronics.com.au/751-micro-metal-gearmotor-lp-6v-with-12-cpr-encoder-back-connector.html) | [\#5111](https://core-electronics.com.au/751-micro-metal-gearmotor-lp-6v-with-12-cpr-encoder-side-connector.html) |
| 130 | 0.74 | 10 | 0.25 | 100:1 | [\#992](https://core-electronics.com.au/100-1-micro-metal-gearmotor.html) | [\#2204](https://core-electronics.com.au/100-1-micro-metal-gearmotor-with-extended-motor-shaft.html) | [\#5112](https://core-electronics.com.au/1001-micro-metal-gearmotor-lp-6v-with-12-cpr-encoder-back-connector.html) | [\#5113](https://core-electronics.com.au/1001-micro-metal-gearmotor-lp-6v-with-12-cpr-encoder-side-connector.html) |
| 90 | 1.1 | 15 | 0.25 | 150:1 | [\#1097](https://core-electronics.com.au/150-1-micro-metal-gearmotor.html) | [\#2205](https://core-electronics.com.au/150-1-micro-metal-gearmotor-lp-6v-with-extended-motor-shaft.html) | [\#5114](https://core-electronics.com.au/1501-micro-metal-gearmotor-lp-6v-with-12-cpr-encoder-back-connector.html) | [\#5115](https://core-electronics.com.au/1501-micro-metal-gearmotor-lp-6v-with-12-cpr-encoder-side-connector.html) |
| 65 | 1.6 | 22 | 0.25 | 210:1 | [\#1096](https://core-electronics.com.au/210-1-micro-metal-gearmotor.html) | [\#2206](https://core-electronics.com.au/210-1-micro-metal-gearmotor-lp-6v-with-extended-motor-shaft.html) | [\#5116](https://core-electronics.com.au/2101-micro-metal-gearmotor-lp-6v-with-12-cpr-encoder-back-connector.html) | [\#5117](https://core-electronics.com.au/2101-micro-metal-gearmotor-lp-6v-with-12-cpr-encoder-side-connector.html) |
| 54 | 1.7 | 24 | 0.23 | 250:1 | [\#1095](https://core-electronics.com.au/250-1-micro-metal-gearmotor.html) | [\#2207](https://core-electronics.com.au/250-1-micro-metal-gearmotor-lp-6v-with-extended-motor-shaft.html) | [\#5118](https://core-electronics.com.au/2501-micro-metal-gearmotor-lp-6v-with-12-cpr-encoder-back-connector.html) | [\#5119](https://core-electronics.com.au/2501-micro-metal-gearmotor-lp-6v-with-12-cpr-encoder-side-connector.html) |
| 45 | 2.0 | 28 | 0.22 | 298:1 | [\#1094](https://core-electronics.com.au/298-1-micro-metal-gearmotor.html) | [\#2208](https://core-electronics.com.au/298-1-micro-metal-gearmotor-with-extended-motor-shaft.html) | [\#5120](https://core-electronics.com.au/2981-micro-metal-gearmotor-lp-6v-with-12-cpr-encoder-back-connector.html) | [\#5121](https://core-electronics.com.au/2981-micro-metal-gearmotor-lp-6v-with-12-cpr-encoder-side-connector.html) |
| 36 | 2.9 | 40 | 0.27 | 380:1 | [\#4790](https://core-electronics.com.au/380-1-micro-metal-gearmotor-lp-6v.html) | [\#4791](https://core-electronics.com.au/380-1-micro-metal-gearmotor-lp-6v-with-extended-motor-shaft.html) | [\#5122](https://core-electronics.com.au/3801-micro-metal-gearmotor-lp-6v-with-12-cpr-encoder-back-connector.html) | [\#5123](https://core-electronics.com.au/3801-micro-metal-gearmotor-lp-6v-with-12-cpr-encoder-side-connector.html) |
| 13 | 5.5 | 76 | – | 1000:1 | [\#1596](https://core-electronics.com.au/1000-1-micro-metal-gearmotor.html) | [\#3058](https://core-electronics.com.au/1000-1-micro-metal-gearmotor-lp-6v-with-extended-motor-shaft.html) | [\#5124](https://core-electronics.com.au/10001-micro-metal-gearmotor-lp-6v-with-12-cpr-encoder-back-connector.html) | [\#5125](https://core-electronics.com.au/10001-micro-metal-gearmotor-lp-6v-with-12-cpr-encoder-side-connector.html) |

**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; Pololu 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.

**Motor windings/brush options**

The 6V and 12V HPCB motors have long-life carbon brushes, and they 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 6V HP, MP, and LP motors have shorter-life precious metal brushes, which are generally lower-friction than carbon brushes and preferred for lower-current applications. 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).

| [![](https://core-electronics.com.au/attachments/localcontent/0J6385_22191f2f7af.jpg)](https://core-electronics.com.au/attachments/localcontent/0J6385_60990fce204.jpg) |
|---|

| [![](https://core-electronics.com.au/attachments/localcontent/0J6412_21262cb9994.jpg)](https://core-electronics.com.au/attachments/localcontent/0J6412_14205b59a44.jpg) |
|---|
| Micro Metal Gearmotor HPCB long-life carbon brushes (left) next to Micro Metal Gearmotor HP precious metal brushes (right). |

**Encoder options**

| \| [![](https://a.pololu-files.com/picture/0J12477.200.jpg?4c91aeac1932e69a79d496bb79a41e6f)](https://a.pololu-files.com/picture/0J12477.1200.jpg?4c91aeac1932e69a79d496bb79a41e6f) \| \|---\| \| Micro Metal Gearmotor (standard version without encoder or extended motor shaft). \| | \| [![](https://a.pololu-files.com/picture/0J12416.260.jpg?24ae99dd41ad8868afe8c366d9a0cd9c)](https://a.pololu-files.com/picture/0J12416.1200.jpg?24ae99dd41ad8868afe8c366d9a0cd9c) \| \|---\|---\| \| Micro Metal Gearmotor with 12 CPR encoder, back connector (cable not included). \| | \| [![](https://a.pololu-files.com/picture/0J12418.220.jpg?8f026fe1675b1109ea574290d3d26081)](https://a.pololu-files.com/picture/0J12418.1200.jpg?8f026fe1675b1109ea574290d3d26081) \| \|---\|---\| \| Micro Metal Gearmotor with 12 CPR encoder, side connector (cable not included). \| | \| [![](https://a.pololu-files.com/picture/0J12478.210.jpg?567e81f6f9e0f794ac70fd41793e2f13)](https://a.pololu-files.com/picture/0J12478.1200.jpg?567e81f6f9e0f794ac70fd41793e2f13) \| \|---\|---\| \| Micro Metal Gearmotor with extended motor shaft. \| |
|---|

In addition to standard versions that are not intended for use with encoders, Pololu have versions of Pololu's Micro Metal Gearmotors available with integrated 12 CPR quadrature encoders on the motor shafts (i.e. on the inputs to the gearbox). These are available in two styles—back connector and side connector—and work with Pololu's assortment of [6-pin JST SH-style cables](https://core-electronics.com.au/category/277/6-pin-jst-sh-style-cables-for-micro-metal-gearmotor-encoders) and [6-pin JST SH-style connector boards](https://core-electronics.com.au/category/278/6-pin-jst-sh-style-connector-boards) (**cables are not included**). A plastic snap-on housing covers the encoder disc and electronics.

Pololu also have motor versions available with an extended motor shaft for adding your own encoder. This 1 mm diameter shaft extends 4.5 mm from the rear of the motor and rotates at the same speed as the input to the gearbox. These versions work with Pololu's separately available [encoders for Micro Metal Gearmotors](https://core-electronics.com.au/sensors/encoders.html).

**Gearbox options**

The table below shows the exact gear ratios for Pololu's Micro Metal Gearmotors. All gearboxes have the same overall dimensions except for 1000:1, which is 3.5 mm longer than the others. The gearboxes use brass plates on all versions except 380:1, which has steel plates for increased durability and resistance to wear from radial loads.

| [![](https://a.pololu-files.com/picture/0J12490.600.jpg?ac3ffd3b736644077790001e0c791163)](https://a.pololu-files.com/picture/0J12490.1200.jpg?ac3ffd3b736644077790001e0c791163) |
|---|

| [![](https://a.pololu-files.com/picture/0J12496.350.jpg?2c789119e5b8348445c059b815cf305e)](https://a.pololu-files.com/picture/0J12496.1200.jpg?2c789119e5b8348445c059b815cf305e) |
|---|
| Micro Metal Gearmotor size comparison of 1000:1 (bottom) vs other gear ratios (top). |

Please note that the higher gear ratios can generate enough torque to damage themselves if exposed to loads beyond what they are rated for (25 kg·mm for 1000:1 and 380:1, 20 kg·mm for everything else). The point of these higher gear ratios is not to deliver more overall torque but rather to allow for slower speeds at a given voltage and to draw less current for a given torque within its rated operating range.

**Dimensions**

![](https://a.pololu-files.com/picture/0J12491.280.jpg?a0e4ef617f18d4e196b27d471ff4c0eb)

Pololu's Micro Metal Gearmotors all have gearboxes with a 10 × 12 mm cross section and a 9 mm-long, 3 mm-diameter D-shaped gearbox output shaft. The gearbox length is the same for all gear ratios except 1000:1, which is 3.5 mm longer than the others. On versions without an encoder, the motor fits entirely within the 10 × 12 mm gearbox cross section. The two encoder options fit within the gearbox cross section on the side opposite the connector and extend past it by 3 mm or 4 mm on the connector side, depending on the connector orientation; for the other two sides, the encoder extends past the gearbox cross section by 0.25 mm.

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 sometimes also 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.

See Pololu's detailed **dimension diagrams** (635k pdf) for more information.

**Details for item #3075**

| [![](https://a.pololu-files.com/picture/0J6830.300.jpg?3a4674227a0cec37acfd2d30f3f091b1)](https://a.pololu-files.com/picture/0J6830.1200.jpg?3a4674227a0cec37acfd2d30f3f091b1) |
|---|
| Micro Metal Gearmotor HPCB with extended motor shaft. |

Gearmotor details:

| motor/brush type | gearbox | encoder |
|---|---|---|
| HPCB 6V: high-power 6V with carbon brushes | 100.37:1 with brass plates | encoder-compatible (extended motor shaft) |

Key specifications:

| voltage | no-load performance | stall extrapolation\* |
|---|---|---|
| 6 V | 330 RPM, 150 mA | 1.6 kg·cm (22 oz·in), 1.5 A |
| \* Note: Stall torque and stall current specifications are theoretical values; stalls could damage the motor or gearbox. |

Exact gear ratio: 35×37×35×3812×11×13×10˜100.37:1

**Motor Accessories**

- **Wheels and hubs:** The Micro Metal Gearmotor’s output shaft matches Pololu's assortment of [Pololu wheels for 3mm shafts](https://core-electronics.com.au/category/233/pololu-wheels-and-tracks-for-3mm-d-shafts) and the [Solarbotics RW2i rubber wheel](https://core-electronics.com.au/solarbotics-rw2i-wheel-internal-set-screw.html). You can also use Pololu's [Pololu universal mounting hubs](https://core-electronics.com.au/pololu-universal-aluminum-mounting-hub-for-3mm-shaft-2-56-holes-2-pack.html) to mount custom wheels and mechanism to the Micro Metal Gearmotor’s output shaft, and you can use Pololu's [12mm hex wheel adapter](https://core-electronics.com.au/12mm-hex-wheel-adapter-for-3mm-shaft-2-pack.html) to use this motor with many common hobby RC wheels.

| [![](https://a.pololu-files.com/picture/0J10238.200.jpg?e86664538f598332c8989f2325016dd7)](https://a.pololu-files.com/picture/0J10238.1200.jpg?e86664538f598332c8989f2325016dd7) |
|---|
| Pololu Wheel 32×7mm on a Micro Metal Gearmotor. |

| [![](https://core-electronics.com.au/attachments/localcontent/0J2598_104052fc5a9.jpg)](https://core-electronics.com.au/attachments/localcontent/0J2598_310309158a0.jpg) |
|---|
| Black Pololu Wheel 70×8mm on a Pololu Micro Metal Gearmotor. |

| [![](https://core-electronics.com.au/attachments/localcontent/0J1103_633504a16f.jpg)](https://core-electronics.com.au/attachments/localcontent/0J1103_28123279e55.jpg) |
|---|
| A pair of Pololu universal aluminum mounting hubs for 3 mm diameter shafts. |

| [![](https://a.pololu-files.com/picture/0J6116.500.jpg?e726e84dfd21fa9aa93f8966d6836de3)](https://a.pololu-files.com/picture/0J6116.1200.jpg?e726e84dfd21fa9aa93f8966d6836de3) |
|---|
| 12mm Hex Wheel Adapter for 3mm Shaft on a Micro Metal Gearmotor. |

- **Mounting brackets:** Pololu's [mounting bracket](https://core-electronics.com.au/pololu-micro-metal-gearmotor-bracket-pair-black.html) (also available in [white](https://core-electronics.com.au/pololu-micro-metal-gearmotor-bracket-pair-white.html)) and [extended mounting bracket](https://core-electronics.com.au/pololu-micro-metal-gearmotor-bracket-extended-pair.html) are specifically designed to securely mount the gearmotor while enclosing the exposed gears. Pololu recommend the **extended** mounting bracket for wheels with recessed hubs, such as the [Pololu wheel 42×19mm](https://core-electronics.com.au/pololu-wheel-42x19mm-pair.html).

| [![](https://core-electronics.com.au/attachments/localcontent/0J1128_7482865039.jpg)](https://core-electronics.com.au/attachments/localcontent/0J1128_521964eda3b.jpg) |
|---|
| Black micro metal gearmotor mounting bracket pair with included screws and nuts. |

| [![](https://core-electronics.com.au/attachments/localcontent/0J1129_5864cea8cd.jpg)](https://core-electronics.com.au/attachments/localcontent/0J1129_12739f11277.jpg) |
|---|
| White micro metal gearmotor mounting bracket pair with included screws and nuts. |

| [![](https://core-electronics.com.au/attachments/localcontent/0J803_115156c3a08.jpg)](https://core-electronics.com.au/attachments/localcontent/0J803_2156077a149.jpg) |
|---|
| Pololu micro metal gearmotor bracket extended with Micro Metal Gearmotor. |

- **Encoders and connector boards:** While Pololu have versions of Pololu's Micro Metal Gearmotors available with encoders already installed, Pololu also have [encoder boards](https://core-electronics.com.au/sensors/encoders.html) available separately that can be installed on the Micro Metal Gearmotor versions with extended motor shafts. For the single-shaft versions, Pololu have [2-pin connector boards](https://core-electronics.com.au/category/340/jst-sh-style-connector-boards-for-micro-metal-gearmotors) available that work with 2-pin JST SH-style female cables.

| [![](https://a.pololu-files.com/picture/0J10615.600.jpg?e9356291eb56cbe713cae286629580de)](https://a.pololu-files.com/picture/0J10615.1200.jpg?e9356291eb56cbe713cae286629580de) |
|---|
| Side-by-side comparison of Magnetic Encoder with Top-Entry Connector (left), Side-Entry Connector (center), and 2mm-pitch through-holes (right). |

| [![](https://a.pololu-files.com/picture/0J13202.270.jpg?5040858f680752de0b6bb39f14055451)](https://a.pololu-files.com/picture/0J13202.1200.jpg?5040858f680752de0b6bb39f14055451) |
|---|
| Micro Metal Gearmotor with Back-Entry, 2-Pin JST SH-Style Connector Board and cable (cable not included). |

| [![](https://a.pololu-files.com/picture/0J13215.270.jpg?065bd82ae531973366bbbcfa764fc8aa)](https://a.pololu-files.com/picture/0J13215.1200.jpg?065bd82ae531973366bbbcfa764fc8aa) |
|---|
| Micro Metal Gearmotor with Side-Entry, 2-Pin JST SH-Style Connector Board and cable (cable not include). |

- **Motor controllers and drivers:** Pololu have a number of [motor controllers](https://core-electronics.com.au/components/motors/dc-motors.html) and [motor drivers](https://core-electronics.com.au/breakout-boards-and-modules/motor-drivers-controllers/brushed-dc-motor-drivers.html) that can be used to control these Micro Metal Gearmotors. In particular, the [MP6550 motor driver](https://core-electronics.com.au/mp6550-single-brushed-dc-motor-driver-carrier.html) is well suited for these motors, as are Pololu's Motoron [M1x550](https://core-electronics.com.au/category/302/motoron-m1x550-single-motor-controllers), [M2x550](https://core-electronics.com.au/category/303/motoron-m2x550-dual-motor-controllers), [M3S550](https://core-electronics.com.au/category/304/motoron-m3s550-triple-motor-controller-shield-for-arduino), and [M3H550](https://core-electronics.com.au/category/305/motoron-m3h550-triple-motor-controller-for-raspberry-pi) chainable serial motor controllers.

| [![](https://a.pololu-files.com/picture/0J11867.200.jpg?ef919591f71859f55cfe6c44d517ddcb)](https://a.pololu-files.com/picture/0J11867.1200.jpg?ef919591f71859f55cfe6c44d517ddcb) |
|---|
| MP6550 Single Brushed DC Motor Driver Carrier. |

| [![](https://a.pololu-files.com/picture/0J12124.200.jpg?4962047dac795206d2c41c84bf41cc2a)](https://a.pololu-files.com/picture/0J12124.1200.jpg?4962047dac795206d2c41c84bf41cc2a) |
|---|
| Motoron M1T550/M1U550 Single Motor Controller (Header Pins Soldered). |

| [![](https://a.pololu-files.com/picture/0J12132.200.jpg?2667087c328f69799d337715174360ba)](https://a.pololu-files.com/picture/0J12132.1200.jpg?2667087c328f69799d337715174360ba) |
|---|
| Motoron M2T550/M2U550 Dual Motor Controller (Header Pins Soldered). |

| [![](https://a.pololu-files.com/picture/0J12161.250.jpg?337f0b648996c7690f750064bb6177ab)](https://a.pololu-files.com/picture/0J12161.1200.jpg?337f0b648996c7690f750064bb6177ab) |
|---|
| Three Motoron M3S550 shields being controlled by an Arduino Uno. |

- **Current sensors:** The recommended motor control options above have built-in current sensing, but Pololu also have an assortment of stand-alone Hall effect-based [current sensors](https://core-electronics.com.au/sensors/current.html) to choose from:

| [![](https://a.pololu-files.com/picture/0J12199.200.jpg?c3ec992c7ff4c0f109c77d86bc1fceb6)](https://a.pololu-files.com/picture/0J12199.1200.jpg?c3ec992c7ff4c0f109c77d86bc1fceb6) |
|---|
| ACS724LLCTR-2P5AB Current Sensor Carrier -2.5A to +2.5A. |

Pololu also incorporate these motors into some of Pololu's products, including Pololu's [Zumo robot](https://core-electronics.com.au/search/?q=zumo+robot) and [3pi robot](https://core-electronics.com.au/category/76/3pi-robots-and-accessories) :

| [![](https://a.pololu-files.com/picture/0J12327.250.jpg?ed09e59ebe4ce0f23fc4baa207abbadb)](https://a.pololu-files.com/picture/0J12327.1200.jpg?ed09e59ebe4ce0f23fc4baa207abbadb) |
|---|
| Assembled Zumo 2040 robot. |

| [![](https://a.pololu-files.com/picture/0J12003.228.jpg?afe1131c6d71cc10bc34d0244f259d84)](https://a.pololu-files.com/picture/0J12003.1200.jpg?afe1131c6d71cc10bc34d0244f259d84) |
|---|
| 3pi+ 2040 Robot. |

**People often buy this product together with:**

| [![Pololu Micro Metal Gearmotor Bracket Pair - Black](https://core-electronics.com.au/attachments/localcontent/0J1128_293715d398.jpg)](https://core-electronics.com.au/pololu-micro-metal-gearmotor-bracket-pair-black.html) | [Pololu Micro Metal Gearmotor Bracket Pair - Black](https://core-electronics.com.au/pololu-micro-metal-gearmotor-bracket-pair-black.html) |
|---|---|

| [![Pololu Micro Metal Gearmotor Bracket Extended Pair](https://core-electronics.com.au/attachments/localcontent/0J1130_2188a9638f.jpg)](https://core-electronics.com.au/pololu-micro-metal-gearmotor-bracket-extended-pair.html) | [Pololu Micro Metal Gearmotor Bracket Extended Pair](https://core-electronics.com.au/pololu-micro-metal-gearmotor-bracket-extended-pair.html) |
|---|---|

| [![50:1 Micro Metal Gearmotor HPCB 6V with Extended Motor Shaft](https://core-electronics.com.au/attachments/localcontent/0J6830_3507e73fe1.jpg)](https://core-electronics.com.au/50-1-micro-metal-gearmotor-hpcb-6v-with-extended-motor-shaft.html) | [50:1 Micro Metal Gearmotor HPCB 6V with Extended Motor Shaft](https://core-electronics.com.au/50-1-micro-metal-gearmotor-hpcb-6v-with-extended-motor-shaft.html) |
|---|---|

**Dimensions**

| Size: | 10 × 12 × 25 mm[1](https://core-electronics.com.au/#note1) |
|---|---|
| Weight: | 9.5 g |
| Shaft diameter: | 3 mm[2](https://core-electronics.com.au/#note2) |

**General specifications**

| Gear ratio: | 100.37:1 |
|---|---|
| No-load speed @ 6V: | 330 rpm[3](https://core-electronics.com.au/#note3) |
| No-load current @ 6V: | 0.15 A[4](https://core-electronics.com.au/#note4) |
| Stall current @ 6V: | 1.5 A |
| Stall torque @ 6V: | 1.6 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) |

**Performance at maximum efficiency**

| Max efficiency @ 6V: | 33 % |
|---|---|
| Speed at max efficiency: | 260 rpm |
| Torque at max efficiency: | 0.33 kg·cm |
| Current at max efficiency: | 0.44 A |
| Output power at max efficiency: | 0.86 W |

**Notes:**

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

- **Datasheet for Pololu Micro Metal Gearmotors (5MB pdf)**
- **Dimension diagrams of Pololu Micro Metal Gearmotors (635k pdf)**
- **3D models of Micro Metal Gearmotors (60MB zip)**
    
    This file contains 3D models (in the step file format) of the for the various versions of the Micro Metal Gearmotors.

## Images

- [Product image 1](https://core-electronics.com.au/media/catalog/product/i/m/image_11137.jpg)