---
product_id: 459903792
title: "12-48VDC 300 Watt Spindle Motor ER16 Collet, 52mm, 400mN.m, 300W Air Cooled Spindle Motor 12000RPM for CNC Engraver Router Milling Machine"
brand: "rattmmotor"
price: "21919 kr"
currency: ISK
in_stock: true
url: https://www.desertcart.is/products/459903792-12-48vdc-300-watt-spindle-motor-er16-collet-52mm-400mn
store_origin: IS
region: Iceland
---

# 300W high power output Ultra-precise 0.01-0.03mm runout Up to 12,000 RPM speed 12-48VDC 300 Watt Spindle Motor ER16 Collet, 52mm, 400mN.m, 300W Air Cooled Spindle Motor 12000RPM for CNC Engraver Router Milling Machine

**Brand:** rattmmotor
**Price:** 21919 kr
**Availability:** ✅ In Stock

## Summary

> ⚙️ Elevate your CNC game with precision power that never quits!

## Quick Answers

- **What is this?** 12-48VDC 300 Watt Spindle Motor ER16 Collet, 52mm, 400mN.m, 300W Air Cooled Spindle Motor 12000RPM for CNC Engraver Router Milling Machine by rattmmotor
- **How much does it cost?** 21919 kr with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.is](https://www.desertcart.is/products/459903792-12-48vdc-300-watt-spindle-motor-er16-collet-52mm-400mn)

## Best For

- rattmmotor enthusiasts

## Why This Product

- Trusted rattmmotor brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Speed Demon:** Idling speed maxes out at 12,000 RPM for ultra-smooth milling and engraving.
- • **Robust & Reliable:** Air-cooled design keeps the motor running cool under pressure, extending tool life.
- • **Precision Engineering:** Spindle radial runout as low as 0.01mm ensures razor-sharp accuracy on every cut.
- • **Powerhouse Performance:** 300W motor delivers consistent, high-efficiency power for demanding CNC tasks.
- • **Versatile Voltage Range:** Operates seamlessly between 12-48VDC, adapting to your custom setups.

## Overview

The RATTMMOTOR 300W air-cooled spindle motor features a 52mm diameter and ER16 collet, delivering up to 12,000 RPM and 400mN.m torque. With an ultra-precise spindle radial runout of 0.01-0.03mm and a flexible 12-48VDC operating voltage, it’s engineered for high-accuracy CNC engraving, routing, and milling applications.

## Description

RATTMMOTOR12-48VDC 300 Watt Spindle Motor ER16 Collet, 52mm, 400mN.m, 300W Air Cooled Spindle Motor 12000RPM for CNC Engraver Router Milling Machine

## Features

- Power: 300W; Operating Voltage: 12-48VDC
- Diameter: 52mm; Total length of motor:175mm
- Speed: Idling speed can reach 12000RPM
- Frequency: 0-400Hz； Torque: 400mN.m
- Spindle radial runout: 0.01-0.03 high precision; Collet: ER16

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Manufacturer | RTM |
| Part number | RTMER16 |
| Item Weight | 862 g |
| Item model number | RTMER16 |
| Color | ER16 |
| Material | Metal |
| Voltage | 48 Volts (DC) |
| Wattage | 300 watts |
| Horsepower | 300 Watts |
| Speed | 12000 RPM |
| Cutting Diameter | 52 Millimeters |
| Batteries Included? | No |
| Batteries Required? | No |
| Item diameter | 52 Millimeters |

## Product Details

- **Brand:** RATTMMOTOR
- **Speed:** 12000 RPM
- **Voltage:** 48 Volts (DC)
- **Horsepower:** 300 Watts
- **Product dimensions:** 5.2W x 17.5H centimeters

## Images

![12-48VDC 300 Watt Spindle Motor ER16 Collet, 52mm, 400mN.m, 300W Air Cooled Spindle Motor 12000RPM for CNC Engraver Router Milling Machine - Image 1](https://m.media-amazon.com/images/I/61xGkE+fvLL.jpg)

## Available Options

This product comes in different **Color** options.

## Questions & Answers

**Q: Look from end fan side，the rotation is cw or ccw?**
A: Fan side is CCW.  But side is CW

**Q: How much does this spindle weigh?**
A: The spindle is 1.75lb or  0.8kg

**Q: Do you need a seperate power supply for a sainsmart 4040 pro?**
A: Yes, you would need a separate power supply.

## Frequently Bought Together

- RATTMMOTOR 12-48VDC 300 Watt Spindle Motor ER16 Collet, 52mm, 400mN.m, 300W Air Cooled Spindle Motor 12000RPM for CNC Engraver Router Milling Machine
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**Shop now:** [https://www.desertcart.is/products/459903792-12-48vdc-300-watt-spindle-motor-er16-collet-52mm-400mn](https://www.desertcart.is/products/459903792-12-48vdc-300-watt-spindle-motor-er16-collet-52mm-400mn)

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*Product available on Desertcart Iceland*
*Store origin: IS*
*Last updated: 2026-01-25*