> **Source:** Core Electronics is an Australian maker-electronics retailer and manufacturer based in Newcastle, NSW, run by a team of makers and educators. We design and manufacture our own product lines (PiicoDev, CE originals) and are official retailers for iconic maker and industrial brands including Raspberry Pi, Arduino, Adafruit, SparkFun and DFRobot. Orders ship Australia-wide from our Newcastle warehouse. Prices are in AUD and include GST. Pricing, stock and dispatch on this page are generated from the store's live catalog. Full machine-readable index: https://core-electronics.com.au/llms.txt

# 50:1 Micro Metal Gearmotor HPCB 6V with Extended Motor Shaft

**Type:** Product page · **SKU:** POLOLU-3073 · **Brand:** [Pololu](https://core-electronics.com.au/brands/pololu-australia)
**Page:** https://core-electronics.com.au/50-1-micro-metal-gearmotor-hpcb-6v-with-extended-motor-shaft.html ([markdown](https://core-electronics.com.au/50-1-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 51.45:1 metal gearbox. It has a cross section of...

## Pricing

- **Price:** $45.90 (inc GST) — $41.73 AUD, exc GST
- **Quantity discounts:** 10+ $40.05 (exc GST) · 25+ $38.81 (exc GST)

## Availability & dispatch

- Available with a lead time — expect dispatch between Aug 17 and Aug 18.

## How to buy

- **Build a cart:** compose `https://core-electronics.com.au/cart/link?items=POLOLU-3073:1` (comma-separated SKU:qty pairs) and share the link. Opening it shows a confirmation page with live pricing and stock before anything is added to the cart.
- **Verify the cart first:** fetch `https://core-electronics.com.au/cart/link/POLOLU-3073:1.md` for live line prices (inc & exc GST, quantity discounts applied), stock and dispatch estimates, and totals. Append `/to/{AU-postcode}` (or `/to/{country-code}:{postcode}`) before `.md` for delivery options and prices to that destination. Unknown, retired, or out-of-stock SKUs are flagged. (Query form `cart/link.md?items=...` also works but some robots parsers refuse query strings here.)
- **Checkout** is completed on-site and includes a captcha at the payment step. Share the cart link; checkout takes it from there.
- **Search the catalogue:** `https://core-electronics.com.au/search/{query}.md` (URL-encode the query; pages 2-3 at `search/{query}/{page}.md`; `search.md?q=` also works)
- **Payment methods, purchase orders, policies and contact details:** https://core-electronics.com.au/llms.txt
## Description

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).

| [![](https://core-electronics.com.au/attachments/localcontent/0J6385_221739b821a.jpg)](https://core-electronics.com.au/attachments/localcontent/0J6385_60990fce204.jpg) |
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| [![](https://core-electronics.com.au/attachments/localcontent/0J6412_21262cb9994.jpg)](https://core-electronics.com.au/attachments/localcontent/0J6412_14205b59a44.jpg) |
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| [![](https://core-electronics.com.au/attachments/localcontent/0J10611_9660a25922.jpg)](https://core-electronics.com.au/attachments/localcontent/0J10611_3556090f51a.jpg) |
|---|

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 Pololu's [encoders for micro metal gearmotors](https://core-electronics.com.au/sensors/encoders.html) (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.

Please see the micro metal gearmotor datasheet (5MB pdf) for more information, including detailed performance graphs for each micro metal gearmotor version. You can also use Pololu's dynamically sortable [micro metal gearmotor comparison table](https://core-electronics.com.au/search/compare/60) to search for the gearmotor that offers the best combination of speed, torque, and current draw for your particular application. A more basic comparison table is available below.

| Rated Voltage | Motor Type | Stall Current | No-Load Current | No-Load Speed (RPM) | Extrapolated Stall Torque | Max Power (W) | ![](https://core-electronics.com.au/attachments/localcontent/0J427_3598b3ddac.jpg)  Single-Shaft (Gearbox Only) | ![](https://core-electronics.com.au/attachments/localcontent/0J2814_3473a13f26.jpg)  Dual-Shaft (Gearbox & Motor) |
|---|---|---|---|---|---|---|---|---|
| (kg · cm) | (oz · in) |
|  |
|  |
| **12 V** | high-power, carbon brushes **(HPCB)** | 0.75 A | 100 mA | 6800 | 0.09 | 1.3 | – | [5:1 HPCB 12V](https://core-electronics.com.au/5-1-micro-metal-gearmotor-hpcb-12v.html) | [5:1 HPCB 12V dual-shaft](https://core-electronics.com.au/5-1-micro-metal-gearmotor-hpcb-12v-with-extended-motor-shaft.html) |
| 80 mA | 3400 | 0.17 | 2.4 | 1.5 | [10:1 HPCB 12V](https://core-electronics.com.au/10-1-micro-metal-gearmotor-hpcb-12v.html) | [10:1 HPCB 12V dual-shaft](https://core-electronics.com.au/10-1-micro-metal-gearmotor-hpcb-12v-with-extended-motor-shaft.html) |
| 2200 | 0.25 | 3.5 | 1.4 | [15:1 HPCB 12V](https://core-electronics.com.au/15-1-micro-metal-gearmotor-hpcb-12v.html) | [15:1 HPCB 12V dual-shaft](https://core-electronics.com.au/15-1-micro-metal-gearmotor-hpcb-12v-with-extended-motor-shaft.html) |
| 1100 | 0.39 | 5.4 | 1.1 | [30:1 HPCB 12V](https://core-electronics.com.au/30-1-micro-metal-gearmotor-hpcb-12v.html) | [30:1 HPCB 12V dual-shaft](https://core-electronics.com.au/30-1-micro-metal-gearmotor-hpcb-12v-with-extended-motor-shaft.html) |
| 650 | 0.67 | 9.3 | 1.1 | [50:1 HPCB 12V](https://core-electronics.com.au/50-1-micro-metal-gearmotor-hpcb-12v.html) | [50:1 HPCB 12V dual-shaft](https://core-electronics.com.au/50-1-micro-metal-gearmotor-hpcb-12v-with-extended-motor-shaft.html) |
| 450 | 1.0 | 14 | 1.1 | [75:1 HPCB 12V](https://core-electronics.com.au/75-1-micro-metal-gearmotor-hpcb-12v.html) | [75:1 HPCB 12V dual-shaft](https://core-electronics.com.au/75-1-micro-metal-gearmotor-hpcb-12v-with-extended-motor-shaft.html) |
| 330 | 1.3 | 18 | 1.1 | [100:1 HPCB 12V](https://core-electronics.com.au/100-1-micro-metal-gearmotor-hpcb-12v.html) | [100:1 HPCB 12V dual-shaft](https://core-electronics.com.au/100-1-micro-metal-gearmotor-hpcb-12v-with-extended-motor-shaft.html) |
| 220 | 1.8 | 25 | 1.0 | [150:1 HPCB 12V](https://core-electronics.com.au/150-1-micro-metal-gearmotor-hpcb-12v.html) | [150:1 HPCB 12V dual-shaft](https://core-electronics.com.au/150-1-micro-metal-gearmotor-hpcb-12v-with-extended-motor-shaft.html) |
| 160 | 2.5 | 35 | 1.0 | [210:1 HPCB 12V](https://core-electronics.com.au/210-1-micro-metal-gearmotor-hpcb-12v.html) | [210:1 HPCB 12V dual-shaft](https://core-electronics.com.au/210-1-micro-metal-gearmotor-hpcb-12v-with-extended-motor-shaft.html) |
| 130 | 3.0 | 42 | 1.1 | [250:1 HPCB 12V](https://core-electronics.com.au/250-1-micro-metal-gearmotor-hpcb-12v.html) | [250:1 HPCB 12V dual-shaft](https://core-electronics.com.au/250-1-micro-metal-gearmotor-hpcb-12v-with-extended-motor-shaft.html) |
| 110 | 3.3 | 46 | 1.0 | [298:1 HPCB 12V](https://core-electronics.com.au/298-1-micro-metal-gearmotor-hpcb-12v.html) | [298:1 HPCB 12V dual-shaft](https://core-electronics.com.au/298-1-micro-metal-gearmotor-hpcb-12v-with-extended-motor-shaft.html) |
| 85 | 5.0 | 69 | 1.1 | [380:1 HPCB 12V](https://core-electronics.com.au/380-1-micro-metal-gearmotor-hpcb-12v.html) | [380:1 HPCB 12V dual-shaft](https://core-electronics.com.au/380-1-micro-metal-gearmotor-hpcb-12v-with-extended-motor-shaft.html) |
| 35 | 10 | 140 | – | [1000:1 HPCB 12V](https://core-electronics.com.au/1000-1-micro-metal-gearmotor-hpcb-12v.html) | [1000:1 HPCB 12V dual-shaft](https://core-electronics.com.au/1000-1-micro-metal-gearmotor-hpcb-12v-with-extended-motor-shaft.html) |
|  |
|  |
| **6 V** | high-power, carbon brushes **(HPCB)** | 1.5 A | 170 mA | 6500 | 0.09 | 1.3 | – | [5:1 HPCB 6V](https://core-electronics.com.au/5-1-micro-metal-gearmotor-hpcb-6v.html) | [5:1 HPCB 6V dual-shaft](https://core-electronics.com.au/5-1-micro-metal-gearmotor-hpcb-6v-with-extended-motor-shaft.html) |
| 150 mA | 3300 | 0.17 | 2.4 | 1.3 | [10:1 HPCB 6V](https://core-electronics.com.au/10-1-micro-metal-gearmotor-hpcb-6v.html) | [10:1 HPCB 6V dual-shaft](https://core-electronics.com.au/10-1-micro-metal-gearmotor-hpcb-6v-with-extended-motor-shaft.html) |
| 2100 | 0.25 | 3.5 | 1.3 | [15:1 HPCB 6V](https://core-electronics.com.au/15-1-micro-metal-gearmotor-hpcb-6v.html) | [15:1 HPCB 6V dual-shaft](https://core-electronics.com.au/15-1-micro-metal-gearmotor-hpcb-6v-with-extended-motor-shaft.html) |
| 1100 | 0.45 | 6.2 | 1.2 | [30:1 HPCB 6V](https://core-electronics.com.au/30-1-micro-metal-gearmotor-hpcb-6v.html) | [30:1 HPCB 6V dual-shaft](https://core-electronics.com.au/30-1-micro-metal-gearmotor-hpcb-6v-with-extended-motor-shaft.html) |
| 650 | 0.74 | 10 | 1.2 | [50:1 HPCB 6V](https://core-electronics.com.au/50-1-micro-metal-gearmotor-hpcb-6v.html) | [50:1 HPCB 6V dual-shaft](https://core-electronics.com.au/50-1-micro-metal-gearmotor-hpcb-6v-with-extended-motor-shaft.html) |
| 430 | 1.1 | 15 | 1.3 | [75:1 HPCB 6V](https://core-electronics.com.au/75-1-micro-metal-gearmotor-hpcb-6v.html) | [75:1 HPCB 6V dual-shaft](https://core-electronics.com.au/pololu-75-1-micro-metal-gearmotor-hpcb-6v-with-extended-motor-shaft.html) |
| 330 | 1.6 | 22 | 1.3 | [100:1 HPCB 6V](https://core-electronics.com.au/100-1-micro-metal-gearmotor-hpcb-6v.html) | [100:1 HPCB 6V dual-shaft](https://core-electronics.com.au/100-1-micro-metal-gearmotor-hpcb-6v-with-extended-motor-shaft.html) |
| 220 | 2.0 | 28 | 1.1 | [150:1 HPCB 6V](https://core-electronics.com.au/150-1-micro-metal-gearmotor-hpcb-6v.html) | [150:1 HPCB 6V dual-shaft](https://core-electronics.com.au/150-1-micro-metal-gearmotor-hpcb-6v-with-extended-motor-shaft.html) |
| 160 | 2.8 | 39 | 1.1 | [210:1 HPCB 6V](https://core-electronics.com.au/210-1-micro-metal-gearmotor-hpcb-6v.html) | [210:1 HPCB 6V dual-shaft](https://core-electronics.com.au/210-1-micro-metal-gearmotor-hpcb-6v-with-extended-motor-shaft.html) |
| 130 | 3.2 | 44 | 1.1 | [250:1 HPCB 6V](https://core-electronics.com.au/250-1-micro-metal-gearmotor-hpcb-6v.html) | [250:1 HPCB 6V dual-shaft](https://core-electronics.com.au/250-1-micro-metal-gearmotor-hpcb-6v-with-extended-motor-shaft.html) |
| 110 | 3.4 | 47 | 1.0 | [298:1 HPCB 6V](https://core-electronics.com.au/298-1-micro-metal-gearmotor-hpcb-6v.html) | [298:1 HPCB 6V dual-shaft](https://core-electronics.com.au/298-1-micro-metal-gearmotor-hpcb-6v-with-extended-motor-shaft.html) |
| 85 | 5.0 | 69 | 1.1 | [380:1 HPCB 6V](https://core-electronics.com.au/pololu-micro-metal-gearmotor-hpcb-6v-380-1.html) | [380:1 HPCB 6V dual-shaft](https://core-electronics.com.au/380-1-micro-metal-gearmotor-hpcb-6v-with-extended-motor-shaft.html) |
| 33 | 11 | 150 | – | [1000:1 HPCB 6V](https://core-electronics.com.au/1000-1-micro-metal-gearmotor-hpcb-6v.html) | [1000:1 HPCB 6V dual-shaft](https://core-electronics.com.au/1000-1-micro-metal-gearmotor-hpcb-6v-with-extended-motor-shaft.html) |
|  |
|  |
| **6 V** | high-power **(HP)** | 1.6 A | 120 mA | 6100 | 0.11 | 1.5 | – | [5:1 HP 6V](https://core-electronics.com.au/5-1-micro-metal-gearmotor-hp.html) | [5:1 HP 6V dual-shaft](https://core-electronics.com.au/5-1-micro-metal-gearmotor-hp-6v-with-extended-motor-shaft.html) |
| 100 mA | 3100 | 0.22 | 3.0 | 1.6 | [10:1 HP 6V](https://core-electronics.com.au/10-1-micro-metal-gearmotor-hp.html) | [10:1 HP 6V dual-shaft](https://core-electronics.com.au/10-1-micro-metal-gearmotor-hp-with-extended-motor-shaft.html) |
| 2000 | 0.30 | 4.2 | 1.5 | [15:1 HP 6V](https://core-electronics.com.au/15-1-micro-metal-gearmotor-hp-6v.html) | [15:1 HP 6V dual-shaft](https://core-electronics.com.au/15-1-micro-metal-gearmotor-hp-6v-with-extended-motor-shaft.html) |
| 1000 | 0.57 | 7.9 | 1.5 | [30:1 HP 6V](https://core-electronics.com.au/30-1-micro-metal-gearmotor-hp.html) | [30:1 HP 6V dual-shaft](https://core-electronics.com.au/30-1-micro-metal-gearmotor-hp-with-extended-motor-shaft.html) |
| 590 | 0.86 | 12 | 1.3 | [50:1 HP 6V](https://core-electronics.com.au/50-1-micro-metal-gearmotor-hp.html) | [50:1 HP 6V dual-shaft](https://core-electronics.com.au/50-1-micro-metal-gearmotor-hp-with-extended-motor-shaft.html) |
| 410 | 1.3 | 18 | 1.4 | [75:1 HP 6V](https://core-electronics.com.au/75-1-micro-metal-gearmotor-hp.html) | [75:1 HP 6V dual-shaft](https://core-electronics.com.au/75-1-micro-metal-gearmotor-hp-with-extended-motor-shaft.html) |
| 310 | 1.7 | 24 | 1.3 | [100:1 HP 6V](https://core-electronics.com.au/100-1-micro-metal-gearmotor-hp.html) | [100:1 HP 6V dual-shaft](https://core-electronics.com.au/100-1-micro-metal-gearmotor-hp-with-extended-motor-shaft.html) |
| 210 | 2.4 | 33 | 1.2 | [150:1 HP 6V](https://core-electronics.com.au/150-1-micro-metal-gearmotor-hp.html) | [150:1 HP 6V dual-shaft](https://core-electronics.com.au/150-1-micro-metal-gearmotor-hp-6v-with-extended-motor-shaft.html) |
| 150 | 3.0 | 42 | 1.1 | [210:1 HP 6V](https://core-electronics.com.au/210-1-micro-metal-gearmotor-hp.html) | [210:1 HP 6V dual-shaft](https://core-electronics.com.au/210-1-micro-metal-gearmotor-hp-6v-with-extended-motor-shaft.html) |
| 120 | 3.4 | 47 | 1.1 | [250:1 HP 6V](https://core-electronics.com.au/250-1-micro-metal-gearmotor-hp.html) | [250:1 HP 6V dual-shaft](https://core-electronics.com.au/250-1-micro-metal-gearmotor-hp-6v-with-extended-motor-shaft.html) |
| 100 | 4.0 | 56 | 1.1 | [298:1 HP 6V](https://core-electronics.com.au/298-1-micro-metal-gearmotor-hp.html) | [298:1 HP 6V dual-shaft](https://core-electronics.com.au/298-1-micro-metal-gearmotor-hp-with-extended-motor-shaft.html) |
| 84 | 5.5 | 76 | 1.1 | [380:1 HP 6V](https://core-electronics.com.au/380-1-micro-metal-gearmotor-hp-6v.html) | [380:1 HP 6V dual-shaft](https://core-electronics.com.au/380-1-micro-metal-gearmotor-hp-6v-with-extended-motor-shaft.html) |
| 31 | 12 | 170 | – | [1000:1 HP 6V](https://core-electronics.com.au/1000-1-micro-metal-gearmotor-hp.html) | [1000:1 HP 6V dual-shaft](https://core-electronics.com.au/1000-1-micro-metal-gearmotor-hp-6v-with-extended-motor-shaft.html) |
|  |
|  |
| **6 V** | medium-power **(MP)** | 0.67 A | 80 mA | 4400 | 0.06 | 0.8 | – | [5:1 MP 6V](https://core-electronics.com.au/5-1-micro-metal-gearmotor-mp-6v.html) | [5:1 MP 6V dual-shaft](https://core-electronics.com.au/5-1-micro-metal-gearmotor-mp-6v-with-extended-motor-shaft.html) |
| 70 mA | 2200 | 0.11 | 1.5 | – | [10:1 MP 6V](https://core-electronics.com.au/10-1-micro-metal-gearmotor-mp.html) | [10:1 MP 6V dual-shaft](https://core-electronics.com.au/10-1-micro-metal-gearmotor-mp-with-extended-motor-shaft.html) |
| 1400 | 0.20 | 2.8 | 0.70 | [15:1 MP 6V](https://core-electronics.com.au/15-1-micro-metal-gearmotor-mp-6v.html) | [15:1 MP 6V dual-shaft](https://core-electronics.com.au/15-1-micro-metal-gearmotor-mp-6v-with-extended-motor-shaft.html) |
| 720 | 0.33 | 4.6 | 0.57 | [30:1 MP 6V](https://core-electronics.com.au/30-1-micro-metal-gearmotor-mp.html) | [30:1 MP 6V dual-shaft](https://core-electronics.com.au/30-1-micro-metal-gearmotor-mp-6v-with-extended-motor-shaft.html) |
| 420 | 0.54 | 7.5 | 0.55 | [50:1 MP 6V](https://core-electronics.com.au/50-1-micro-metal-gearmotor-mp.html) | [50:1 MP 6V dual-shaft](https://core-electronics.com.au/50-1-micro-metal-gearmotor-mp-6v-with-extended-motor-shaft.html) |
| 290 | 0.78 | 11 | 0.54 | [75:1 MP 6V](https://core-electronics.com.au/75-1-micro-metal-gearmotor-mp.html) | [75:1 MP 6V dual-shaft](https://core-electronics.com.au/75-1-micro-metal-gearmotor-mp-with-extended-motor-shaft.html) |
| 220 | 0.94 | 13 | 0.50 | [100:1 MP 6V](https://core-electronics.com.au/100-1-micro-metal-gearmotor-mp.html) | [100:1 MP 6V dual-shaft](https://core-electronics.com.au/100-1-micro-metal-gearmotor-mp-with-extended-motor-shaft.html) |
| 150 | 1.3 | 18 | 0.48 | [150:1 MP 6V](https://core-electronics.com.au/150-1-micro-metal-gearmotor-mp.html) | [150:1 MP 6V dual-shaft](https://core-electronics.com.au/150-1-micro-metal-gearmotor-mp-6v-with-extended-motor-shaft.html) |
| 100 | 1.7 | 24 | 0.46 | [210:1 MP 6V](https://core-electronics.com.au/210-1-micro-metal-gearmotor-mp-6v.html) | [210:1 MP 6V dual-shaft](https://core-electronics.com.au/210-1-micro-metal-gearmotor-mp-6v-with-extended-motor-shaft.html) |
| 88 | 2.2 | 31 | 0.48 | [250:1 MP 6V](https://core-electronics.com.au/250-1-micro-metal-gearmotor-mp-6v.html) | [250:1 MP 6V dual-shaft](https://core-electronics.com.au/250-1-micro-metal-gearmotor-mp-6v-with-extended-motor-shaft.html) |
| 73 | 2.4 | 33 | 0.44 | [298:1 MP 6V](https://core-electronics.com.au/298-1-micro-metal-gearmotor-mp.html) | [298:1 MP 6V dual-shaft](https://core-electronics.com.au/298-1-micro-metal-gearmotor-mp-6v-with-extended-motor-shaft.html) |
| 57 | 3.6 | 50 | 0.53 | [380:1 MP 6V](https://core-electronics.com.au/380-1-micro-metal-gearmotor-mp-6v.html) | [380:1 MP 6V dual-shaft](https://core-electronics.com.au/380-1-micro-metal-gearmotor-mp-6v-with-extended-motor-shaft.html) |
| 22 | 6.7 | 93 | – | [1000:1 MP 6V](https://core-electronics.com.au/1000-1-micro-metal-gearmotor-mp-6v.html) | [1000:1 MP 6V dual-shaft](https://core-electronics.com.au/1000-1-micro-metal-gearmotor-mp-6v-with-extended-motor-shaft.html) |
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| **6 V** | low-power **(LP)** | 0.36 A | 50 mA | 2500 | 0.05 | 0.7 | – | [5:1 LP 6V](https://core-electronics.com.au/5-1-micro-metal-gearmotor.html) | [5:1 LP 6V dual-shaft](https://core-electronics.com.au/5-1-micro-metal-gearmotor-lp-6v-with-extended-motor-shaft.html) |
| 40 mA | 1300 | 0.10 | 1.4 | – | [10:1 LP 6V](https://core-electronics.com.au/10-1-micro-metal-gearmotor.html) | [10:1 LP 6V dual-shaft](https://core-electronics.com.au/10-1-micro-metal-gearmotor-lp-6v-with-extended-motor-shaft.html) |
| 860 | 0.17 | 2.4 | 0.37 | [15:1 LP 6V](https://core-electronics.com.au/15-1-micro-metal-gearmotor-lp-6v.html) | [15:1 LP 6V dual-shaft](https://core-electronics.com.au/15-1-micro-metal-gearmotor-lp-6v-with-extended-motor-shaft.html) |
| 450 | 0.29 | 4.0 | 0.31 | [30:1 LP 6V](https://core-electronics.com.au/30-1-micro-metal-gearmotor.html) | [30:1 LP 6V dual-shaft](https://core-electronics.com.au/30-1-micro-metal-gearmotor-with-extended-motor-shaft.html) |
| 270 | 0.44 | 6.1 | 0.29 | [50:1 LP 6V](https://core-electronics.com.au/50-1-micro-metal-gearmotor.html) | [50:1 LP 6V dual-shaft](https://core-electronics.com.au/50-1-micro-metal-gearmotor-with-extended-motor-shaft.html) |
| 180 | 0.64 | 8.9 | 0.29 | [75:1 LP 6V](https://core-electronics.com.au/75-1-micro-metal-gearmotor.html) | [75:1 LP 6V dual-shaft](https://core-electronics.com.au/75-1-micro-metal-gearmotor-lp-6v-with-extended-motor-shaft.html) |
| 130 | 0.74 | 10 | 0.25 | [100:1 LP 6V](https://core-electronics.com.au/100-1-micro-metal-gearmotor.html) | [100:1 LP 6V dual-shaft](https://core-electronics.com.au/100-1-micro-metal-gearmotor-with-extended-motor-shaft.html) |
| 90 | 1.1 | 15 | 0.25 | [150:1 LP 6V](https://core-electronics.com.au/150-1-micro-metal-gearmotor.html) | [150:1 LP 6V dual-shaft](https://core-electronics.com.au/150-1-micro-metal-gearmotor-lp-6v-with-extended-motor-shaft.html) |
| 65 | 1.6 | 22 | 0.25 | [210:1 LP 6V](https://core-electronics.com.au/210-1-micro-metal-gearmotor.html) | [210:1 LP 6V dual-shaft](https://core-electronics.com.au/210-1-micro-metal-gearmotor-lp-6v-with-extended-motor-shaft.html) |
| 54 | 1.7 | 24 | 0.23 | [250:1 LP 6V](https://core-electronics.com.au/250-1-micro-metal-gearmotor.html) | [250:1 LP 6V dual-shaft](https://core-electronics.com.au/250-1-micro-metal-gearmotor-lp-6v-with-extended-motor-shaft.html) |
| 45 | 2.0 | 28 | 0.22 | [298:1 LP 6V](https://core-electronics.com.au/298-1-micro-metal-gearmotor.html) | [298:1 LP 6V dual-shaft](https://core-electronics.com.au/298-1-micro-metal-gearmotor-with-extended-motor-shaft.html) |
| 36 | 2.9 | 40 | 0.27 | [380:1 LP 6V](https://core-electronics.com.au/380-1-micro-metal-gearmotor-lp-6v.html) | [380:1 LP 6V dual-shaft](https://core-electronics.com.au/380-1-micro-metal-gearmotor-lp-6v-with-extended-motor-shaft.html) |
| 13 | 5.5 | 76 | – | [1000:1 LP 6V](https://core-electronics.com.au/1000-1-micro-metal-gearmotor.html) | [1000:1 LP 6V dual-shaft](https://core-electronics.com.au/1000-1-micro-metal-gearmotor-lp-6v-with-extended-motor-shaft.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.

**Details for item #3073**

Exact gear ratio: 32×33×35×3815×14×13×10≈51.45:132×33×35×3815×14×13×10˜51.45:1

This gearmotor is a miniature **high-power, 6 V** brushed DC motor with **long-life carbon brushes** and a **51.45:1** 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. This version also has a 4.5 × 1 mm **extended motor shaft**.

Key specifications:

| voltage | no-load performance | stall extrapolation |
|---|---|---|
| 6 V | 650 RPM, 150 mA | 0.74 kg·cm (10 oz·in), 1.5 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)**

| [![](https://core-electronics.com.au/attachments/localcontent/0J6672_56642cc7ac2.jpg)](https://core-electronics.com.au/attachments/localcontent/0J6672_149781a3aac.jpg) |
|---|
| 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)**

| [![](https://core-electronics.com.au/attachments/localcontent/0J6671_561936fc2f3.jpg)](https://core-electronics.com.au/attachments/localcontent/0J6671_14840d619ec.jpg) |
|---|
| 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).

**Motor Accessories**

- **Wheels and hubs:** The micro metal gearmotor’s output shaft matches Pololu's assortment of [Pololu wheels](https://core-electronics.com.au/hardware/wheels.html) 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://core-electronics.com.au/attachments/localcontent/0J10238_8219364033.jpg)](https://core-electronics.com.au/attachments/localcontent/0J10238_384968a6636.jpg) \| \|---\| \| 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://core-electronics.com.au/attachments/localcontent/0J6116_339090328c8.jpg)](https://core-electronics.com.au/attachments/localcontent/0J6116_3109111a64e.jpg) |
|---|
| 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. Pololu's micro metal gearmotors will also work with Pololu's [15.5D mm metal gearmotor bracket pair](https://core-electronics.com.au/pololu-15-5d-mm-metal-gearmotor-bracket-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. \| |
|---|

- **Quadrature encoders:** Pololu offer several [quadrature encoders](https://core-electronics.com.au/sensors/encoders.html) that work with Pololu's micro metal gearmotors.

| \| [![](https://core-electronics.com.au/attachments/localcontent/0J10611_1121892c159.jpg)](https://core-electronics.com.au/attachments/localcontent/0J10611_3556090f51a.jpg) \| \|---\| \| Magnetic Encoder with Side-Entry Connector assembled on a Micro Metal Gearmotor with Extended Motor Shaft (JST cable not included). \| | \| [![](https://core-electronics.com.au/attachments/localcontent/0J4767_218035ca97c.jpg)](https://core-electronics.com.au/attachments/localcontent/0J4767_24129dbb546.jpg) \| \|---\|---\| \| Example of an installed micro metal gearmotor reflective optical encoder. \| |
|---|

**Note:** The **HPCB** versions of Pololu's micro metal gearmotors are **not** compatible with Pololu's [\#2590](https://core-electronics.com.au/optical-encoder-pair-kit-for-micro-metal-gearmotors-5v.html) and [\#2591 optical encoders](https://core-electronics.com.au/optical-encoder-pair-kit-for-micro-metal-gearmotors-3-3v.html) or Pololu's [older #2598 magnetic encoders](https://core-electronics.com.au/magnetic-encoder-pair-kit-for-micro-metal-gearmotors-12-cpr-2-7-18v.html) (the terminals are too wide to fit through the corresponding holes in the encoder boards). However, they are compatible with Pololu's newer [\#3081](https://core-electronics.com.au/magnetic-encoder-pair-kit-for-micro-metal-gearmotors-12-cpr-2-7-18v-hpcb-compatible.html), [\#4760](https://core-electronics.com.au/magnetic-encoder-pair-kit-with-top-entry-connector-for-micro-metal-gearmotors-12-cpr-2-7-18v.html), and [\#4761](https://core-electronics.com.au/magnetic-encoder-pair-kit-with-side-entry-connector-for-micro-metal-gearmotors-12-cpr-2-7-18v.html) magnetic encoders.

- **Motor controllers and drivers:** Pololu have a number of [motor controllers](https://core-electronics.com.au/components/motors/dc-motors.html), [motor drivers](https://core-electronics.com.au/breakout-boards-and-modules/motor-drivers-controllers/brushed-dc-motor-drivers.html), and [robot controllers](https://core-electronics.com.au/category/8/robot-controllers) that make it easy to drive these micro metal gearmotors. For the 6 V micro metal gearmotors, consider the [DRV8838 single-channel motor driver carrier](https://core-electronics.com.au/drv8838-single-brushed-dc-motor-driver-carrier.html), the [DRV8833 dual motor driver carrier](https://core-electronics.com.au/drv8833-dual-motor-driver-carrier.html), and [DRV8835 dual motor driver carrier](https://core-electronics.com.au/drv8835-dual-motor-driver-carrier.html) (or [DRV8835 shield for Arduino](https://core-electronics.com.au/pololu-drv8835-dual-motor-driver-shield-for-arduino.html)). For the 12 V micro metal gearmotors, consider the [MAX14870 single-channel motor driver carrier](https://core-electronics.com.au/max14870-single-brushed-dc-motor-driver-carrier.html), [DRV8801 single-channel motor driver carrier](https://core-electronics.com.au/drv8801-single-brushed-dc-motor-driver-carrier.html), and [A4990 dual motor driver carrier](https://core-electronics.com.au/a4990-dual-motor-driver-carrier.html) (or [A4990 shield for Arduino](https://core-electronics.com.au/pololu-a4990-dual-motor-driver-shield-for-arduino.html)).

| \| [![](https://core-electronics.com.au/attachments/localcontent/0J5750_13664cc08b6.jpg)](https://core-electronics.com.au/attachments/localcontent/0J5750_54561c26396.jpg) \| \|---\| \| DRV8838 Single Brushed DC Motor Driver Carrier. \| | \| [![](https://core-electronics.com.au/attachments/localcontent/0J5710_1043962a44e.jpg)](https://core-electronics.com.au/attachments/localcontent/0J5710_31198ee3068.jpg) \| \|---\|---\| \| Pololu A4990 Dual Motor Driver Shield for Arduino, bottom view. \| | \| [![](https://core-electronics.com.au/attachments/localcontent/0J4052_1212789f367.jpg)](https://core-electronics.com.au/attachments/localcontent/0J4052_219717487fc.jpg) \| \|---\|---\| \| DRV8835 dual motor driver carrier. \| |
|---|

- **Current sensors:** Pololu have an assortment of Hall effect-based [current sensors](https://core-electronics.com.au/sensors/current.html) to choose from for those who need to monitor motor current:

| \| [![](https://core-electronics.com.au/attachments/localcontent/0J4597_12882a01a14.jpg)](https://core-electronics.com.au/attachments/localcontent/0J4597_22155dc2c8f.jpg) \| \|---\| \| ACS711EX current sensor carrier -15.5A to +15.5A. \| | \| [![](https://core-electronics.com.au/attachments/localcontent/0J1308_14439010100.jpg)](https://core-electronics.com.au/attachments/localcontent/0J1308_149643e2a9e.jpg) \| \|---\|---\| \| ACS714 current sensor carrier -5A to +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/pololu-3pi-robot.html) :

| \| [![](https://core-electronics.com.au/attachments/localcontent/0J6301_16729181f08.jpg)](https://core-electronics.com.au/attachments/localcontent/0J6301_22703fe51df.jpg) \| \|---\| \| Assembled Zumo 32U4 robot. \| | \| [![](https://core-electronics.com.au/attachments/localcontent/0J2415_21199ec0da1.jpg)](https://core-electronics.com.au/attachments/localcontent/0J2415_311798e523c.jpg) \| \|---\|---\| \| Original Pololu 3pi robot. \| |
|---|

**Selecting the Right Gearmotor**

Pololu offer a wide selection of metal gearmotors that offer different combinations of speed and torque. Pololu's **[metal gearmotor comparison table](https://core-electronics.com.au/search/compare/51)** can help you find the motor that best meets your project’s requirements.

| ![](https://core-electronics.com.au/attachments/localcontent/0J9775_551831ace88.jpg) |
|---|

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

| [![Pololu Wheel 80×10mm Pair - Black](https://core-electronics.com.au/attachments/localcontent/0J10430_32810c27c8.jpg)](https://core-electronics.com.au/pololu-wheel-80x10mm-pair-black.html) | [Pololu Wheel 80×10mm Pair - Black](https://core-electronics.com.au/pololu-wheel-80x10mm-pair-black.html) |
|---|---|

| [![Pololu Wheel 80×10mm Pair - Red](https://core-electronics.com.au/attachments/localcontent/0J10431_5521a2a08d.jpg)](https://core-electronics.com.au/pololu-wheel-80x10mm-pair-red.html) | [Pololu Wheel 80×10mm Pair - Red](https://core-electronics.com.au/pololu-wheel-80x10mm-pair-red.html) |
|---|---|

| [![Pololu Wheel 80×10mm Pair - Blue](https://core-electronics.com.au/attachments/localcontent/0J10433_54872a5e6e.jpg)](https://core-electronics.com.au/pololu-wheel-80x10mm-pair-blue.html) | [Pololu Wheel 80×10mm Pair - Blue](https://core-electronics.com.au/pololu-wheel-80x10mm-pair-blue.html) |
|---|---|

**Dimensions**

 | Size: | 10 × 12 × 26 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: | 51.45:1 |
|---|---|
| No-load speed @ 6V: | 650 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: | 0.74 kg·cm |
| Max output power @ 6V: | 1.2 W |
| Extended motor shaft?: | Y |
| Long-life carbon brushes?: | Y |
| Motor type: | 1.5A stall @ 6V (HPCB 6V - carbon brush) |

**Performance at maximum efficiency**

 | Max efficiency @ 6V: | 32 % |
|---|---|
| Speed at max efficiency: | 490 rpm |
| Torque at max efficiency: | 0.16 kg·cm |
| Current at max efficiency: | 0.42 A |
| Output power at max efficiency: | 0.80 W |

**Notes:**

1Output shafts add 14 mm to the 26 mm length.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 (262k pdf)**
- **3D model of a Micro Metal Gearmotor with Extended Motor Shaft and a #1086 bracket (4MB step)**
    
    3D model of a [Micro Metal Gearmotor with Extended Motor Shaft](https://core-electronics.com.au/category/141/micro-metal-gearmotors-with-extended-motor-shafts) and a [\#1086 bracket](https://core-electronics.com.au/pololu-micro-metal-gearmotor-bracket-pair-white.html) (or [\#989 bracket](https://core-electronics.com.au/pololu-micro-metal-gearmotor-bracket-pair-black.html), which is just a black version of the #1086).
- **3D model of a Micro Metal Gearmotor and a #1086 bracket (4MB step)**
    
    3D model of a [Micro Metal Gearmotor](https://core-electronics.com.au/components/motors/metal-gearmotors/micro.html) and a [\#1086 bracket](https://core-electronics.com.au/pololu-micro-metal-gearmotor-bracket-pair-white.html) (or [\#989 bracket](https://core-electronics.com.au/pololu-micro-metal-gearmotor-bracket-pair-black.html), which is just a black version of the #1086).
- **3D model of Micro Metal Gearmotors (single-shaft, precious metal brushes, not 1000:1) (11MB step)**
    
    3D model of low-power, medium-power, high-power Pololu Micro Metal Gearmotors. This diagram does **not** apply to the HPCB versions, dual-shaft versions, or 1000:1 gear ratios.
- **3D model of Micro Metal Gearmotors with extended motor shafts (precious metal brushes, not 1000:1) (11MB step)**
    
    3D model of low-power, medium-power, high-power Pololu Micro Metal Gearmotors with extended motor shafts. This diagram does **not** apply to the HPCB versions, single-shaft versions, or 1000:1 gear ratios.
- **3D model of 1000:1 Micro Metal Gearmotors (single-shaft, precious metal brushes) (14MB step)**
    
    3D model of Pololu Micro Metal Gearmotors with 1000:1 gearboxes. This diagram does **not** apply to the HPCB versions, dual-shaft versions, or other gear ratios.
- **3D model of 1000:1 Micro Metal Gearmotors with extended motor shafts (precious metal brushes) (14MB step)**
    
    3D model of Pololu Micro Metal Gearmotors with 1000:1 gearboxes and extended motor shafts. This diagram does **not** apply to the HPCB versions, single-shaft versions, or other gear ratios.
- **3D model of HPCB Micro Metal Gearmotors (single-shaft, carbon brushes, not 1000:1) (11MB step)**
    
    3D model of high-power carbon brush (HPCB) Pololu Micro Metal Gearmotors. This diagram does **not** apply to precious metal brush (i.e. non-HPCB) versions, dual-shaft versions, or 1000:1 gear ratios.
- **3D model of HPCB Micro Metal Gearmotors with extended motor shafts (carbon brushes, not 1000:1) (11MB step)**
    
    3D model of high-power carbon brush (HPCB) Pololu Micro Metal Gearmotors. This diagram does **not** apply to precious metal brush (i.e. non-HPCB) versions, single-shaft versions, or 1000:1 gear ratios.
- **3D model of 1000:1 HPCB Micro Metal Gearmotors (single-shaft, carbon brushes) (14MB step)**
    
    3D model of high-power carbon brush (HPCB) Pololu Micro Metal Gearmotors with 1000:1 gearboxes. This diagram does **not** apply to precious metal brush (i.e. non-HPCB) versions, dual-shaft versions, or other gear ratios.
- **3D model of 1000:1 HPCB Micro Metal Gearmotors with extended motor shafts (carbon brushes) (14MB step)**
    
    3D model of high-power carbon brush (HPCB) Pololu Micro Metal Gearmotors with 1000:1 gearboxes and extended motor shafts. This diagram does **not** apply to precious metal brush (i.e. non-HPCB) versions, single-shaft versions, or other gear ratios.

## Images

- [Product image 1](https://core-electronics.com.au/media/catalog/product/i/m/image_4049.jpg)