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# 75:1 Metal Gearmotor 25Dx69L mm HP 24V with 48 CPR Encoder

**Type:** Product page · **SKU:** POLOLU-5726 · **Brand:** [Pololu](https://core-electronics.com.au/brands/pololu-australia)
**Page:** https://core-electronics.com.au/75-1-metal-gearmotor-25dx69l-mm-hp-24v-with-48-cpr-encoder.html ([markdown](https://core-electronics.com.au/75-1-metal-gearmotor-25dx69l-mm-hp-24v-with-48-cpr-encoder.html.md))

Compact 25 mm HP 24 V gearmotor with 74.83:1 metal gearbox and 48 CPR encoder offering 3591.84 counts per revolution for accurate motion control.

## Pricing

- **Price:** $90.00 (inc GST) — $81.82 AUD, exc GST

## Availability & dispatch

- Available with a lead time — expect dispatch between Aug 21 and Aug 24.

## How to buy

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## Description

## Overview

This cylindrical brushed DC gearmotor has a 25 mm diameter case and 4 mm diameter gearbox output shaft. The motor and encoder portion is available by itself (no gearbox), and versions without the encoder are also available. See the [25D metal gearmotor datasheet](https://www.pololu.com/file/0J1829/pololu-25d-metal-gearmotors-rev-2-0.pdf) (5MB pdf) for more information, including detailed performance graphs for each gearmotor version. A more basic comparison table is available below.

| **High-Power (HP) 24V** |
|---|
| 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/0J2644.100nw.jpg?d126a93259b960b5871ae3efea0c65de)  Without Encoder | ![](https://a.pololu-files.com/picture/0J9890.133nw.jpg?c6dfea6448bb8ef0cef701de2d59b4d6)  With Encoder |
| (kg⋅cm) | (oz⋅in) |
| **24 V** | 2.7 A | 80 mA w/o encoder   100 mA with encoder | 10,000 | 0.4 | 5.5 | 12 | no gearbox | – | item #5720 |
| 2300 | 2.0 | 28 | 12 | 4.4:1 | item #5701 | item #5721 |
| 1000 | 4.1 | 57 | 11 | 9.7:1 | item #5702 | item #5722 |
| 490 | 7.9 | 110 | 10 | 20.4:1 | item #5703 | item #5723 |
| 300 | 12 | 160 | 9.3 | 34:1 | item #5704 | item #5724 |
| 220 | 15 | 210 | 8.5 | 47:1 | item #5705 | item #5725 |
| 140 | 23 | 320 | – | 75:1 | item #5706 | item #5726 |
| 100 | 29 | 400 | – | 99:1 | item #5707 | item #5727 |
| **High-Power (HP) 12V** |
| Rated Voltage | Stall Current | No-Load Current | No-Load Speed (RPM) | Extrapolated Stall Torque | Max Power (W) | Approx Gear Ratio | Without Encoder | With Encoder |
| (kg⋅cm) | (oz⋅in) |
| **12 V** | 5.0 A | 250 mA w/o encoder   300 mA with encoder | 10,000 | 0.4 | 5.5 | 10 | no gearbox | – | [item #4840](https://core-electronics.com.au/hp-12v-motor-with-48-cpr-encoder-for-25d-mm-metal-gearmotors-no-gearbox.html) |
| 2200 | 1.7 | 24 | 9.4 | 4.4:1 | [item #3201](https://core-electronics.com.au/4-4-1-metal-gearmotor-25dx48l-mm-hp-12v.html) | [item #4841](https://core-electronics.com.au/4-4-1-metal-gearmotor-25dx63l-mm-hp-12v-with-48-cpr-encoder.html) |
| 1000 | 3.9 | 54 | 10 | 9.7:1 | [item #3202](https://core-electronics.com.au/9-7-1-metal-gearmotor-25dx48l-mm-hp-12v.html) | [item #4842](https://core-electronics.com.au/9-7-1-metal-gearmotor-25dx63l-mm-hp-12v-with-48-cpr-encoder.html) |
| 500 | 7.4 | 100 | 9.4 | 20.4:1 | item #3203 | [item #4843](https://core-electronics.com.au/20-4-1-metal-gearmotor-25dx65l-mm-hp-12v-with-48-cpr-encoder.html) |
| 300 | 11 | 150 | 8.9 | 34:1 | [item #3204](https://core-electronics.com.au/34-1-metal-gearmotor-25dx52l-mm-hp-12v.html) | [item #4844](https://core-electronics.com.au/34-1-metal-gearmotor-25dx67l-mm-hp-12v-with-48-cpr-encoder.html) |
| 220 | 15 | 210 | 8.4 | 47:1 | [item #3205](https://core-electronics.com.au/47-1-metal-gearmotor-25dx52l-mm-hp-12v.html) | [item #4845](https://core-electronics.com.au/47-1-metal-gearmotor-25dx67l-mm-hp-12v-with-48-cpr-encoder.html) |
| 130 | 22 | 310 | – | 75:1 | [item #3206](https://core-electronics.com.au/75-1-metal-gearmotor-25dx54l-mm-hp-12v.html) | [item #4846](https://core-electronics.com.au/75-1-metal-gearmotor-25dx69l-mm-hp-12v-with-48-cpr-encoder.html) |
| 100 | 29 | 400 | – | 99:1 | [item #3207](https://core-electronics.com.au/99-1-metal-gearmotor-25dx54l-mm-hp-12v.html) | [item #4847](https://core-electronics.com.au/99-1-metal-gearmotor-25dx69l-mm-hp-12v-with-48-cpr-encoder.html) |
| **Medium-Power (MP) 12V** |
| Rated Voltage | Stall Current | No-Load Current | No-Load Speed (RPM) | Extrapolated Stall Torque | Max Power (W) | Approx Gear Ratio | Without Encoder | With Encoder |
| (kg⋅cm) | (oz⋅in) |
| **12 V** | 1.8 A | 80 mA w/o encoder   100 mA with encoder | 8200 | 0.17 | 2.4 | 3.5 | no gearbox | – | [item #4860](https://core-electronics.com.au/mp-12v-motor-with-48-cpr-encoder-for-25d-mm-metal-gearmotors-no-gearbox.html) |
| 1800 | 0.71 | 10 | 3.2 | 4.4:1 | [item #3225](https://core-electronics.com.au/4-4-1-metal-gearmotor-25dx48l-mm-mp-12v.html) | [item #4861](https://core-electronics.com.au/4-4-1-metal-gearmotor-25dx63l-mm-mp-12v-with-48-cpr-encoder.html) |
| 800 | 1.7 | 24 | 3.4 | 9.7:1 | item #3226 | [item #4862](https://core-electronics.com.au/9-7-1-metal-gearmotor-25dx63l-mm-mp-12v-with-48-cpr-encoder.html) |
| 380 | 3.2 | 44 | 3.1 | 20.4:1 | [item #3227](https://core-electronics.com.au/20-4-1-metal-gearmotor-25dx50l-mm-mp-12v.html) | [item #4863](https://core-electronics.com.au/20-4-1-metal-gearmotor-25dx65l-mm-mp-12v-with-48-cpr-encoder.html) |
| 230 | 4.7 | 65 | 2.8 | 34:1 | [item #3228](https://core-electronics.com.au/34-1-metal-gearmotor-25dx52l-mm-mp-12v.html) | [item #4864](https://core-electronics.com.au/34-1-metal-gearmotor-25dx67l-mm-mp-12v-with-48-cpr-encoder.html) |
| 170 | 6.4 | 89 | 2.8 | 47:1 | [item #3229](https://core-electronics.com.au/47-1-metal-gearmotor-25dx52l-mm-mp-12v.html) | [item #4865](https://core-electronics.com.au/47-1-metal-gearmotor-25dx67l-mm-mp-12v-with-48-cpr-encoder.html) |
| 100 | 8.5 | 120 | 2.3 | 75:1 | [item #3230](https://core-electronics.com.au/75-1-metal-gearmotor-25dx54l-mm-mp-12v.html) | [item #4866](https://core-electronics.com.au/75-1-metal-gearmotor-25dx69l-mm-mp-12v-with-48-cpr-encoder.html) |
| 79 | 11 | 150 | 2.3 | 99:1 | [item #3231](https://core-electronics.com.au/99-1-metal-gearmotor-25dx54l-mm-mp-12v.html) | [item #4867](https://core-electronics.com.au/99-1-metal-gearmotor-25dx69l-mm-mp-12v-with-48-cpr-encoder.html) |
| 46 | 18 | 250 | 2.1 | 172:1 | [item #3232](https://core-electronics.com.au/172-1-metal-gearmotor-25dx56l-mm-mp-12v.html) | [item #4868](https://core-electronics.com.au/172-1-metal-gearmotor-25dx71l-mm-mp-12v-with-48-cpr-encoder.html) |
| 35 | 24 | 330 | – | 227:1 | [item #3233](https://core-electronics.com.au/227-1-metal-gearmotor-25dx56l-mm-mp-12v.html) | [item #4869](https://core-electronics.com.au/227-1-metal-gearmotor-25dx71l-mm-mp-12v-with-48-cpr-encoder.html) |
| **Low-Power (LP) 12V** |
| 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/0J2644.100nw.jpg?d126a93259b960b5871ae3efea0c65de)  Without Encoder | ![](https://a.pololu-files.com/picture/0J9890.133nw.jpg?c6dfea6448bb8ef0cef701de2d59b4d6)  With Encoder |
| (kg⋅cm) | (oz⋅in) |
| **12 V** | 0.9 A | 50 mA w/o encoder   60 mA with encoder | 5600 | 0.14 | 1.9 | 1.8 | no gearbox | – | [item #4880](https://core-electronics.com.au/lp-12v-motor-with-48-cpr-encoder-for-25d-mm-metal-gearmotors-no-gearbox.html) |
| 1200 | 0.53 | 7.4 | 1.7 | 4.4:1 | [item #3249](https://core-electronics.com.au/4-4-1-metal-gearmotor-25dx48l-mm-lp-12v.html) | [item #4881](https://core-electronics.com.au/4-4-1-metal-gearmotor-25dx63l-mm-lp-12v-with-48-cpr-encoder.html) |
| 580 | 1.3 | 18 | 1.8 | 9.7:1 | [item #3250](https://core-electronics.com.au/9-7-1-metal-gearmotor-25dx48l-mm-lp-12v.html) | [item #4882](https://core-electronics.com.au/9-7-1-metal-gearmotor-25dx63l-mm-lp-12v-with-48-cpr-encoder.html) |
| 280 | 2.4 | 33 | 1.7 | 20.4:1 | [item #3251](https://core-electronics.com.au/20-4-1-metal-gearmotor-25dx50l-mm-lp-12v.html) | [item #4883](https://core-electronics.com.au/20-4-1-metal-gearmotor-25dx65l-mm-lp-12v-with-48-cpr-encoder.html) |
| 170 | 3.7 | 51 | 1.6 | 34:1 | [item #3252](https://core-electronics.com.au/34-1-metal-gearmotor-25dx52l-mm-lp-12v.html) | [item #4884](https://core-electronics.com.au/34-1-metal-gearmotor-25dx67l-mm-lp-12v-with-48-cpr-encoder.html) |
| 120 | 4.8 | 67 | 1.4 | 47:1 | [item #3253](https://core-electronics.com.au/47-1-metal-gearmotor-25dx52l-mm-lp-12v.html) | [item #4885](https://core-electronics.com.au/47-1-metal-gearmotor-25dx67l-mm-lp-12v-with-48-cpr-encoder.html) |
| 75 | 7.1 | 99 | 1.4 | 75:1 | [item #3254](https://core-electronics.com.au/75-1-metal-gearmotor-25dx54l-mm-lp-12v.html) | [item #4886](https://core-electronics.com.au/75-1-metal-gearmotor-25dx69l-mm-lp-12v-with-48-cpr-encoder.html) |
| 57 | 8.7 | 120 | 1.2 | 99:1 | [item #3255](https://core-electronics.com.au/99-1-metal-gearmotor-25dx54l-mm-lp-12v.html) | [item #4887](https://core-electronics.com.au/99-1-metal-gearmotor-25dx69l-mm-lp-12v-with-48-cpr-encoder.html) |
| 33 | 13 | 180 | 1.1 | 172:1 | [item #3256](https://core-electronics.com.au/172-1-metal-gearmotor-25dx56l-mm-lp-12v.html) | [item #4888](https://core-electronics.com.au/172-1-metal-gearmotor-25dx71l-mm-lp-12v-with-48-cpr-encoder.html) |
| 25 | 16 | 220 | 1.0 | 227:1 | [item #3257](https://core-electronics.com.au/227-1-metal-gearmotor-25dx56l-mm-lp-12v.html) | [item #4889](https://core-electronics.com.au/227-1-metal-gearmotor-25dx71l-mm-lp-12v-with-48-cpr-encoder.html) |
| 15 | 23 | 320 | 378:1 | – | [item #3258](https://core-electronics.com.au/378-1-metal-gearmotor-25dx58l-mm-lp-12v.html) | [item #4890](https://core-electronics.com.au/378-1-metal-gearmotor-25dx73l-mm-lp-12v-with-48-cpr-encoder.html) |
| **High-Power (HP) 6V** |
| Rated Voltage | Stall Current | No-Load Current | No-Load Speed (RPM) | Extrapolated Stall Torque | Max Power (W) | Approx Gear Ratio | Without Encoder | With Encoder |
| (kg⋅cm) | (oz⋅in) |
| **6 V** | 6.0 A | 420 mA w/o encoder   500 mA with encoder | 10,000 | 0.3 | 4 | 7 | no gearbox | – | [item #4800](https://core-electronics.com.au/hp-6v-motor-with-48-cpr-encoder-for-25d-mm-metal-gearmotors-no-gearbox.html) |
| 2200 | 1.2 | 17 | 6.7 | 4.4:1 | [item #1570](https://core-electronics.com.au/4-4-1-metal-gearmotor-25dx48l-mm-hp.html) | [item #4801](https://core-electronics.com.au/4-4-1-metal-gearmotor-25dx63l-mm-hp-6v-with-48-cpr-encoder.html) |
| 1000 | 2.3 | 32 | 5.9 | 9.7:1 | item #1571 | [item #4802](https://core-electronics.com.au/9-7-1-metal-gearmotor-25dx63l-mm-hp-6v-with-48-cpr-encoder.html) |
| 480 | 4.8 | 67 | 5.9 | 20.4:1 | item #1572 | [item #4803](https://core-electronics.com.au/20-4-1-metal-gearmotor-25dx65l-mm-hp-6v-with-48-cpr-encoder.html) |
| 290 | 6.8 | 94 | 5.1 | 34:1 | [item #1573](https://core-electronics.com.au/34-1-metal-gearmotor-25dx52l-mm-hp.html) | [item #4804](https://core-electronics.com.au/34-1-metal-gearmotor-25dx67l-mm-hp-6v-with-48-cpr-encoder.html) |
| 210 | 9.1 | 130 | 4.9 | 47:1 | item #1574 | [item #4805](https://core-electronics.com.au/47-1-metal-gearmotor-25dx67l-mm-hp-6v-with-48-cpr-encoder.html) |
| 130 | 14 | 190 | 4.5 | 75:1 | item #1575 | [item #4806](https://core-electronics.com.au/75-1-metal-gearmotor-25dx69l-mm-hp-6v-with-48-cpr-encoder.html) |
| 99 | 15 | 210 | 3.9 | 99:1 | item #1576 | [item #4807](https://core-electronics.com.au/99-1-metal-gearmotor-25dx69l-mm-hp-6v-with-48-cpr-encoder.html) |
| 57 | 27 | 380 | – | 172:1 | [item #1577](https://core-electronics.com.au/172-1-metal-gearmotor-25dx56l-mm-hp.html) | [item #4808](https://core-electronics.com.au/172-1-metal-gearmotor-25dx71l-mm-hp-6v-with-48-cpr-encoder.html) |
| **Low-Power (LP) 6V** |
| Rated Voltage | Stall Current | No-Load Current | No-Load Speed (RPM) | Extrapolated Stall Torque | Max Power (W) | Approx Gear Ratio | Without Encoder | With Encoder |
| (kg⋅cm) | (oz⋅in) |
| **6 V** | 2.0 A | 100 mA w/o encoder   120 mA with encoder | 6200 | 0.15 | 2.1 | 2.1 | no gearbox | – | [item #4820](https://core-electronics.com.au/lp-6v-motor-with-48-cpr-encoder-for-25d-mm-metal-gearmotors-no-gearbox.html) |
| 1300 | 0.63 | 8.7 | 2.1 | 4.4:1 | [item #1581](https://core-electronics.com.au/4-4-1-metal-gearmotor-25dx48l-mm.html) | [item #4821](https://core-electronics.com.au/4-4-1-metal-gearmotor-25dx63l-mm-lp-6v-with-48-cpr-encoder.html) |
| 630 | 1.3 | 18 | 1.9 | 9.7:1 | item #1582 | [item #4822](https://core-electronics.com.au/9-7-1-metal-gearmotor-25dx63l-mm-lp-6v-with-48-cpr-encoder.html) |
| 290 | 2.5 | 35 | 1.9 | 20.4:1 | item #1583 | [item #4823](https://core-electronics.com.au/20-4-1-metal-gearmotor-25dx65l-mm-lp-6v-with-48-cpr-encoder.html) |
| 180 | 3.9 | 54 | 1.7 | 34:1 | item #1584 | [item #4824](https://core-electronics.com.au/34-1-metal-gearmotor-25dx67l-mm-lp-6v-with-48-cpr-encoder.html) |
| 130 | 4.8 | 67 | 1.5 | 47:1 | item #1585 | [item #4825](https://core-electronics.com.au/47-1-metal-gearmotor-25dx67l-mm-lp-6v-with-48-cpr-encoder.html) |
| 80 | 7.5 | 100 | 1.5 | 75:1 | item #1586 | [item #4826](https://core-electronics.com.au/75-1-metal-gearmotor-25dx69l-mm-lp-6v-with-48-cpr-encoder.html) |
| 61 | 9.1 | 130 | 1.4 | 99:1 | item #1587 | [item #4827](https://core-electronics.com.au/99-1-metal-gearmotor-25dx69l-mm-lp-6v-with-48-cpr-encoder.html) |
| 35 | 14 | 190 | 1.2 | 172:1 | item #1588 | [item #4828](https://core-electronics.com.au/172-1-metal-gearmotor-25dx71l-mm-lp-6v-with-48-cpr-encoder.html) |
| 27 | 17 | 240 | 1.1 | 227:1 | item #1589 | [item #4829](https://core-electronics.com.au/227-1-metal-gearmotor-25dx71l-mm-lp-6v-with-48-cpr-encoder.html) |
| 16 | 25 | 350 | – | 378:1 | item #1590 | [item #4830](https://core-electronics.com.au/378-1-metal-gearmotor-25dx73l-mm-lp-6v-with-48-cpr-encoder.html) |
| 12 | 31 | 430 | – | 499:1 | [item #1591](https://core-electronics.com.au/499-1-metal-gearmotor-25dx58l-mm.html) | [item #4831](https://core-electronics.com.au/499-1-metal-gearmotor-25dx73l-mm-lp-6v-with-48-cpr-encoder.html) |

**Note:** The listed stall torques and currents are theoretical extrapolations; units will typically stall well before these points as the motors heat up. Stalling or overloading gearmotors can greatly decrease their lifetimes and even result in immediate damage. The recommended upper limit for continuously applied loads is 4 kg⋅cm (55 oz⋅in), and the recommended upper limit for intermittently permissible torque is 8 kg⋅cm (110 oz⋅in). Stalls can also result in rapid (potentially on the order of seconds) thermal damage to the motor windings and brushes; 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 (they can begin rotating at voltages as low as 1 V); lower voltages might not be practical, and higher voltages could start negatively affecting the life of the motor.

These gearmotors are functionally identical to the previous versions without end caps (they use the same motor, encoder, and gearboxes). The black plastic end cap is easily removable if you need to access the encoder or want to slightly reduce the overall gearmotor size, but there is a little bit of base plastic that will remain, as shown in the picture below:

![25D mm metal gearmotor with 48 CPR encoder (with end cap removed).](https://a.pololu-files.com/picture/0J9892.285.jpg?b820dc103b1261c6223b48a80e984945)*25D mm metal gearmotor with 48 CPR encoder (with end cap removed).*

## Details for this version

Exact gear ratio: (22×20×22×22×22×23) / (12×12×10×10×10×10) ≈74.83:1

## Dimensions

The diagram below shows the dimensions of the 25D mm line of gearmotors (units are mm over \[inches\]). This diagram is also available as a [**downloadable PDF**](https://www.pololu.com/file/0J1634/25d-metal-gearmotor-dimension-diagram.pdf) (171k pdf).

![Dimensions of the Pololu 25D mm metal gearmotors with encoders. Units are mm over [inches].](https://a.pololu-files.com/picture/0J9977.600.jpg?e0dec0e9030adc49eed5198796d797b9)*Dimensions of the Pololu 25D mm metal gearmotors with encoders. Units are mm over \[inches\].*

**Warning**: Do not screw too far into the mounting holes as the screws can hit the gears. We recommend screwing no further than 6 mm (0.24″) into the screw hole.

![25D mm metal gearmotor with 48 CPR encoder (with end cap removed).](https://a.pololu-files.com/picture/0J9893.250.jpg?06ba85bfb64af3c4a95d668ec15a92fa)*25D mm metal gearmotor with 48 CPR encoder (with end cap removed).*

![The 25D and 37D mm metal gearmotors with encoders have cables that are terminated with a 6-pin, 0.1″-pitch female connector.](https://a.pololu-files.com/picture/0J9897.250.jpg?3f176980a7f9b0e5bf0008af7456f780)*The 25D and 37D mm metal gearmotors with encoders have cables that are terminated with a 6-pin, 0.1″-pitch female connector.*

## Using the encoder

A two-channel Hall effect encoder is used to sense the rotation of a magnetic disk on a rear protrusion of the motor shaft. The quadrature encoder provides a resolution of 48 counts per revolution of the motor shaft when counting both edges of both channels. To compute the counts per revolution of the gearbox output, multiply the gear ratio by 48. The motor/encoder has six color-coded, 8″ (20 cm) leads terminated by a 1×6 female header with a 0.1″ (2.54 mm) pitch, as shown in the main product picture. This header works with standard [0.1″ male headers](https://core-electronics.com.au/catalogsearch/result/?q=male%20headers) and male [jumper](https://core-electronics.com.au/catalogsearch/result/?q=jumper%20wires) and precrimped wires. If this header is not convenient for your application, you can pull the crimped wires out of the header or cut the header off. The following table describes the wire functions:

| Color | Function |
|---|---|
| Red | motor power (connects to one motor terminal) |
| Black | motor power (connects to the other motor terminal) |
| Green | encoder GND |
| Blue | encoder Vcc (3.5 V to 20 V) |
| Yellow | encoder A output |
| White | encoder B output |

The Hall sensor requires an input voltage, Vcc, between 3.5 and 20 V and draws a maximum of 10 mA. The A and B outputs are square waves from 0 V to Vcc approximately 90° out of phase. The frequency of the transitions tells you the speed of the motor, and the order of the transitions tells you the direction. The following oscilloscope capture shows the A and B (yellow and white) encoder outputs using a motor voltage of 6 V and a Hall sensor Vcc of 5 V:

![Encoder A and B outputs for 25D mm HP 6V metal gearmotor with 48 CPR encoder (motor running at 6 V).](https://a.pololu-files.com/picture/0J3481.600.jpg?06699383bae833cd49d20e43a7de2164)*Encoder A and B outputs for 25D mm HP 6V metal gearmotor with 48 CPR encoder (motor running at 6 V).*

By counting both the rising and falling edges of both the A and B outputs, it is possible to get 48 counts per revolution of the motor shaft. Using just a single edge of one channel results in 12 counts per revolution of the motor shaft, so the frequency of the A output in the above oscilloscope capture is 12 times the motor rotation frequency.

## Gearmotor accessories

- **Mounting brackets:** The face plate has two mounting holes threaded for M3 screws. You can use the custom-designed [25D mm metal gearmotor bracket](https://core-electronics.com.au/pololu-25d-mm-metal-gearmotor-bracket-pair.html) (shown in the picture below) to mount the gearmotor to your project via these mounting holes and the screws that come with the bracket.

![Pololu 25D mm metal gearmotor bracket pair.](https://a.pololu-files.com/picture/0J5908.250.jpg?edeb0134ab8fa52ad1f98a9df3efbe27)*Pololu 25D mm metal gearmotor bracket pair.*

![Pololu 25D mm gearmotor with bracket.](https://a.pololu-files.com/picture/0J3048.250.jpg?a441009c555a8870c2d25a58e71f7be7)*Pololu 25D mm gearmotor with bracket.*

- **Wheels and hubs:** The 4 mm diameter gearbox output shaft works with [Pololu multi-hub wheels](https://core-electronics.com.au/pololu-multi-hub-wheel-w-inserts-for-3mm-and-4mm-shafts-80-10mm-white-2-pack.html) as shown in the left picture below. That shaft also works with the [Pololu universal aluminium mounting hub for 4mm shafts](https://core-electronics.com.au/pololu-universal-aluminum-mounting-hub-for-4mm-shaft-4-40-holes-2-pack.html), which can be used to mount larger [Pololu wheels](https://core-electronics.com.au/catalogsearch/result/?q=Pololu%20wheels) (60mm-, 70mm-, 80mm-, and 90mm-diameter) or custom wheels and mechanisms to the gearmotor’s output shaft as shown in the right picture below.

![Pololu 80×10mm multi-hub wheel on a Pololu 25D mm metal gearmotor with encoder.](https://a.pololu-files.com/picture/0J9772.250.jpg?c1049f65e9a73ec835ba7202b5f13e1d)*Pololu 80×10mm multi-hub wheel on a Pololu 25D mm metal gearmotor with encoder.*

![Pololu 60×8mm wheel with 4mm hub adapter on Pololu 25D mm metal gearmotor with encoder.](https://a.pololu-files.com/picture/0J9855.250.jpg?879d6b73a7895b423d6ca21f6d1794e5)*Pololu 60×8mm wheel with 4mm hub adapter on Pololu 25D mm metal gearmotor with encoder.*

 Alternatively, you could use the [4mm scooter wheel adapter](https://core-electronics.com.au/pololu-aluminum-scooter-wheel-adapter-for-4mm-shaft.html) to mount many common scooter, skateboard, and inline skate wheels to the gearmotor’s output shaft as shown in the left picture below. For a general-purpose hex adapter, consider the [12mm hex wheel adapter](https://core-electronics.com.au/12mm-hex-wheel-adapter-for-4mm-shaft-2-pack.html), which lets you use this motor with many common hobby RC wheels as shown in the right picture below.

![A 25D mm gearmotor with encoder connected to a scooter wheel by the 4mm scooter wheel adapter.](https://a.pololu-files.com/picture/0J9850.250.jpg?e992d2f12eee99e0a1bbe48c05762b7a)*A 25D mm gearmotor with encoder connected to a scooter wheel by the 4mm scooter wheel adapter.*

![12mm hex wheel adapter for 4mm shaft on a 25D mm metal gearmotor with encoder.](https://a.pololu-files.com/picture/0J9978.250.jpg?06368cef7caf40ff19f6bd656aa13db9)*12mm hex wheel adapter for 4mm shaft on a 25D mm metal gearmotor with encoder.*

- **Motor controllers and drivers:** A number of motor drivers and [motor controllers](https://core-electronics.com.au/catalogsearch/result/?q=motor%20controllers) work with these 25D mm metal gearmotors. For the LP and MP versions, TB9051FTG-based drivers are recommended, for which there is a basic [single carrier](https://core-electronics.com.au/tb9051ftg-single-brushed-dc-motor-driver-carrier.html), a [dual-channel shield for Arduino](https://core-electronics.com.au/dual-tb9051ftg-motor-driver-shield-for-arduino.html), and a [dual-channel expansion board for Raspberry Pi](https://core-electronics.com.au/dual-tb9051ftg-motor-driver-for-raspberry-pi-assembled.html). For the HP versions, VNH5019-based motor drivers are recommended (available as [single](https://core-electronics.com.au/vnh5019-motor-driver-carrier.html) and [dual carriers](https://core-electronics.com.au/pololu-dual-vnh5019-motor-driver-shield-for-arduino.html)), though these can also be a good choice for the lower-power motors.

![TB9051FTG Single Motor Driver Carrier.](https://a.pololu-files.com/picture/0J8733.200.jpg?6e24fd8931ba87add62991cc66c0975a)*TB9051FTG Single Motor Driver Carrier.*

![Pololu dual VNH5019 motor driver shield for Arduino.](https://a.pololu-files.com/picture/0J5209.200.jpg?837a27a9a09c8a862b076dcad40e4482)*Pololu dual VNH5019 motor driver shield for Arduino.*

 If you are looking for higher-level control interfaces, such as USB, RC, analog voltages, I²C, or TTL serial, consider the [Motoron motor controllers](https://core-electronics.com.au/catalogsearch/result/?q=Motoron), Jrk motor controllers, or [RoboClaw motor controllers](https://core-electronics.com.au/catalogsearch/result/?q=RoboClaw); these controllers are available in various power levels several of which can handle the 25D mm metal gearmotors (a motor controller that can handle continuous currents above the stall current of your motor is generally recommended).

![Three Motoron M3H550 controllers being controlled by a Raspberry Pi.](https://a.pololu-files.com/picture/0J12165.230.jpg?0bacecd72951314f319c2a2ee8a13ab2)*Three Motoron M3H550 controllers being controlled by a Raspberry Pi.*

![Jrk G2 21v3 USB Motor Controller with Feedback.](https://a.pololu-files.com/picture/0J8913.200.jpg?b860f61e87dadd82afea074d60720dfc)*Jrk G2 21v3 USB Motor Controller with Feedback.*

![RoboClaw 2x7A Motor Controller (V5B) in its included case.](https://a.pololu-files.com/picture/0J7485.220.jpg?73b200559e345d2372c2ce374538f94e)*RoboClaw 2x7A Motor Controller (V5B) in its included case.*

- **Current sensors:** An assortment of current sensors is available for those who need to monitor motor current:

![ACS711EX current sensor carrier -15.5A to +15.5A.](https://a.pololu-files.com/picture/0J4597.200.jpg?0761d0776e6321d47d359794ba1bff07)*ACS711EX current sensor carrier -15.5A to +15.5A.*

![ACS724LLCTR-05AB Current Sensor Carrier -5A to +5A.](https://a.pololu-files.com/picture/0J10101.200.jpg?b340af49f700a32ed899f9be12b91341)*ACS724LLCTR-05AB Current Sensor Carrier -5A to +5A.*

## Images

- [Product image 1](https://core-electronics.com.au/media/catalog/product/P/O/POLOLU-5726_ecommerce_1786149869349.jpg)