# NEO 550

## NEO 550 Overview

The REV [NEO 550 Brushless Motor (REV-21-1651)](https://www.revrobotics.com/rev-21-1651/) is the newest member of the NEO family of brushless motors. Its output power and small size are specifically designed to make NEO 550 the perfect motor for intakes and other non-drivetrain robot mechanisms. Mounting holes and pilot match a standard 550 series motor, allowing it to natively mount to many existing off-the-shelf gearboxes.

<figure><img src="https://4148826207-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2Fe0CWwhMSoCEH7NLVoLhF%2Fuploads%2Fz6Pmz46tbsu5ed2epNrC%2F550.PNG?alt=media&#x26;token=d7df2208-1ba9-4618-a6d0-2fd320c5c391" alt=""><figcaption></figcaption></figure>

The REV NEO 550 Brushless Motor runs a 0.12in output shaft which, when combined with its 550-style mounting features, allows for easy installation in many off-the-shelf gearboxes.&#x20;

Its small size and weight make it easy to put power where you need it, whether that is on intakes, end-effectors, or other weight-sensitive mechanisms. However, keep in mind that this motor has a lower thermal mass than a NEO, CIM, or Mini CIM, and thus it may not be ideal for some drivetrain applications.

## Wiring Connections

Connecting the NEO 550 Brushless motors is fairly straightforward. Follow the guide at[ Wiring the Spark Max](https://docs.revrobotics.com/brushless/spark-max/gs/wiring), and don't forget to connect your sensor wire; the motor will not spin without it!

{% hint style="danger" %}
CAUTION: Improperly wiring the connectors can cause severe motor damage and is not covered by the warranty. <mark style="color:red;">DO NOT</mark> connect the motor directly to the battery.&#x20;
{% endhint %}

## Features

* Mounting features match other 550 series DC motors
* Out-runner construction
* Front and rear ball bearings
* High-temperature neodymium magnets
* High-flex silicone motor wires
* Integrated motor sensor (3-phase hall sensors)
* Motor temperature sensor

## Motor Specifications

| Parameter                      | Value and Units    |
| ------------------------------ | ------------------ |
| Nominal Operating Voltage      | 12 V               |
| Motor Kv                       | 917 Kv             |
| Free Speed\`                   | 11000 RPM          |
| Free Running Current           | 1.4 A              |
| Stall Current                  | 100 A              |
| Stall Torque                   | 0.97 Nm            |
| Peak Output Power              | 279 W              |
| Hall-Sensor Encoder Resolution | 42 counts per rev. |

### Mechanical Specifications

| Parameter             | Value and Units       |
| --------------------- | --------------------- |
| Output Shaft Diameter | 0.125in (3.175mm)     |
| Output Shaft Length   | 0.267in (7mm)         |
| Output Pilot          | 0.512in (13mm)        |
| Body Length           | 1.752in (44.5mm)      |
| Body Diameter         | 1.378in (35mm)        |
| Weight                | 0.142 kgs (0.313 lbs) |
| Phase Wire Length     | 5.91in (150mm)        |
| Phase Wire Gauge      | 14AWG                 |
| Sensor Cable Length   | 11.81in (300mm)       |
| Sensor Cable Gauge    | 24AWG                 |

{% hint style="info" %}
Please read our [Locked Rotor Testing Documentation](https://docs.revrobotics.com/brushless/neo/locked-rotor-testing) and ensure you understand how to set an appropriate [Smart Current Limit](https://docs.revrobotics.com/brushless/spark-max/gs/make-it-spin#limiting-current) before using your NEO 550 Brushless Motor.
{% endhint %}