---
product_id: 345064298
title: "MGN12 Linear Rail Guide 300mm Linear Sliding Guideway with MGN12H Sliding Block for 3D Printer and CNC Machine (H-Type)"
brand: "simax3d"
price: "€ 69.86"
currency: EUR
in_stock: true
category: "Simax3 D"
url: https://www.desertcart.be/products/345064298-mgn12-linear-rail-guide-300mm-linear-sliding-guideway-with-mgn12h
store_origin: BE
region: Belgium
---

# 300mm precision length M3 threaded holes for secure mounting 304 stainless steel durability MGN12 Linear Rail Guide 300mm Linear Sliding Guideway with MGN12H Sliding Block for 3D Printer and CNC Machine (H-Type)

**Brand:** simax3d
**Price:** € 69.86
**Availability:** ✅ In Stock

## Summary

> 🚀 Glide into precision with the MGN12 — where smooth meets strong!

## Quick Answers

- **What is this?** MGN12 Linear Rail Guide 300mm Linear Sliding Guideway with MGN12H Sliding Block for 3D Printer and CNC Machine (H-Type) by simax3d
- **How much does it cost?** € 69.86 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.be](https://www.desertcart.be/products/345064298-mgn12-linear-rail-guide-300mm-linear-sliding-guideway-with-mgn12h)

## Best For

- simax3d enthusiasts

## Why This Product

- Trusted simax3d brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Versatile Compatibility:** Perfect upgrade for Ender 3v2 and other DIY CNC or 3D printing setups craving enhanced precision.
- • **Integrated Rubber Stoppers:** Prevents sliding block from accidental falls, ensuring safety and reliability during operation.
- • **Secure M3 Threaded Mounting:** Designed for easy integration with 20 series EU aluminum profiles using M3 T nuts and screws.
- • **Precision 300mm Linear Travel:** Optimized length for smooth, accurate motion in 3D printers and CNC machines.
- • **Robust 304 Stainless Steel Build:** Engineered for long-lasting corrosion resistance and industrial-grade strength.

## Overview

The MGN12 Linear Rail Guide 300mm with MGN12H sliding block is a high-quality, 304 stainless steel linear motion component designed for 3D printers and CNC machines. Featuring a 300mm rail length, M3 threaded holes for secure mounting on 20 series EU aluminum profiles, and rubber stoppers to prevent block dislodgement, it offers reliable, precise linear movement essential for professional-grade fabrication and prototyping.

## Description

Product Specification -Type: MGN12 Linear Rail with Sliding Block -Material: 304 Stainless Steel -Slider Threaded hole: M3 Notification -There's size note in picture, make sure you get the correct size. Packing List -1x 300mm MGN12 Linear Rail -1x MGN12H Sliding Block

## Features

- Packing List: 300mm MGN12 Linear Rail*1, MGN12H Sliding Block*1
- Notification: There's size note in picture, make sure you get the correct size.
- Recommendation: Please use M3 T nut and screw to fix the linear rail for 20 series EU Al-profile.
- Good Details: There are two rubber stoppers on each side of the linear rail to prevent the sliding block from falling out.
- MGN12H Linear Slide 300MM Note: Please use M3 T nut and screw to fix the linear rail for 20 series EU Al-profile.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B08BF7G7VH |
| ASIN  | B08BF7G7VH |
| Bearing Number | MGN12001 |
| Bearing Type | Linear Bearing |
| Brand Name | SIMAX3D |
| Compatible Lubricant | Grease |
| Customer Reviews | 3.7 3.7 out of 5 stars (18) |
| Customer reviews | 3.7 3.7 out of 5 stars (18) |
| Date First Available  | 25 March 2021 |
| Item model number  | c |
| Manufacturer | SIMAX3D |
| Manufacturer  | SIMAX3D |
| Material Type | Stainless Steel |
| Model | c |
| Number of Items | 1 |
| Package Dimensions  | 40.64 x 5.08 x 5.08 cm; 295 g |
| Part Number | MX-MGN12H300 |
| UPC | 782940268398 |

## Product Details

- **Bearing number:** MGN12001
- **Bearing type:** Linear Bearing
- **Brand:** SIMAX3D
- **Compatible lubricant:** Grease
- **Material:** Stainless Steel

## Images

![MGN12 Linear Rail Guide 300mm Linear Sliding Guideway with MGN12H Sliding Block for 3D Printer and CNC Machine (H-Type) - Image 1](https://m.media-amazon.com/images/I/41D4XlgXgyL.jpg)

## Available Options

This product comes in different **Color, Size, Number Of Items** options.

## Frequently Bought Together

- MGN12 Linear Rail Guide 300mm Linear Sliding Guideway with MGN12H Sliding Block for 3D Printer and CNC Machine (H-Type)
- Key-Bak Super48 HD 8oz. Locking Retractable Key Holder, 48" Retractable Cord, Black Polycarbonate Case, Steel Belt Clip, Oversized Split Ring

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**Shop now:** [https://www.desertcart.be/products/345064298-mgn12-linear-rail-guide-300mm-linear-sliding-guideway-with-mgn12h](https://www.desertcart.be/products/345064298-mgn12-linear-rail-guide-300mm-linear-sliding-guideway-with-mgn12h)

---

*Product available on Desertcart Belgium*
*Store origin: BE*
*Last updated: 2026-10-22*