---
product_id: 540918116
title: "CNCMANS MGN12H 300mm Linear Rail Guide with MGN12H Bearing Steel Carriage Block, Mini MGN12H Linear Guide Rail for 3D Printer and CNC Machine (MGN12-300mm H-Type)"
brand: "cncmans"
price: "204 Lei"
currency: RON
in_stock: true
reviews_count: 8
url: https://www.desertcart.ro/products/540918116-cncmans-mgn12h-300mm-linear-rail-guide-with-mgn12h-bearing-steel
store_origin: RO
region: Romania
---

# 300mm precision length Pre-drilled metric mounting holes 4-point contact load bearing CNCMANS MGN12H 300mm Linear Rail Guide with MGN12H Bearing Steel Carriage Block, Mini MGN12H Linear Guide Rail for 3D Printer and CNC Machine (MGN12-300mm H-Type)

**Brand:** cncmans
**Price:** 204 Lei
**Availability:** ✅ In Stock

## Summary

> ⚙️ Glide into precision — don’t let your build lag behind!

## Quick Answers

- **What is this?** CNCMANS MGN12H 300mm Linear Rail Guide with MGN12H Bearing Steel Carriage Block, Mini MGN12H Linear Guide Rail for 3D Printer and CNC Machine (MGN12-300mm H-Type) by cncmans
- **How much does it cost?** 204 Lei with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.ro](https://www.desertcart.ro/products/540918116-cncmans-mgn12h-300mm-linear-rail-guide-with-mgn12h-bearing-steel)

## Best For

- cncmans enthusiasts

## Why This Product

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

## Key Features

- • **Compact Yet Powerful:** Lightweight 200g design delivers precise linear motion without adding bulk to your machinery.
- • **Universal Compatibility:** Standard 12mm width and 8mm thickness with pre-drilled holes designed for M3 screws and T-nuts—easy integration into your CNC or 3D printer setup.
- • **Versatile Application Range:** Ideal for automation, precision measuring, and any project demanding flawless linear guidance.
- • **Robust Stainless Steel Build:** Crafted from hardened stainless steel for exceptional rigidity, rust resistance, and long-lasting durability.
- • **Precision Engineered for Smooth Motion:** Experience ultra-smooth, whisper-quiet sliding with industrial-grade MGN12H linear bearings.

## Overview

The CNCMANS MGN12H 300mm Linear Rail Guide kit includes a high-precision stainless steel rail and MGN12H bearing block designed for smooth, quiet, and durable linear motion. Featuring a 4-point contact design for multi-directional load support and pre-drilled metric mounting holes, it’s optimized for CNC machines, 3D printers, and other precision equipment requiring reliable linear guidance.

## Description

Full description not available

## Features

- Complete Linear Rail Kits: This linear rail set includes 1pcs 300mm long MGN12 linear rail and 1pcs MGN12H carriage block.
- High Quality Material - The linear rail is made of very hard stainless steel, which has the characteristics of strong rigidity, high precision and rust resistance. It adopts four-point contact design, which can bear the load in all directions.
- Smooth and Quiet - Industrial-grade standard MGN12H block, with a high precision linear bearing inside. Sliding blocks are used cooperatively with rails, smooth sliding provided by the inside linear bearing.
- Easy to install - standard MGN12 linear rail. Width is 12mm, thickness is 8mm. With pre-drilled D6.0xd3.5mm mounting hole. The mounting holes are metric. The distance is 25mm. These linear rails are designed for M3*8mm screws and T-nuts.
- Wide Application - The linear guides are small and lightweight, widely used for automatic equipment, precision measuring equipment and many other machines that need precise linear motion.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Manufacturer | CNCMANS |
| Part number | PDVCLAH05JK08Z150S4LW9Q |
| Item Weight | 200 g |
| Product Dimensions | 14.2 x 4 x 2 cm; 200 g |
| Item model number | PDVCLAH05JK08Z150S4LW9Q |
| Size | 300mm |
| Colour | As Shown |
| Style | Black MGN12H |
| Finish | Chrome |
| Material | Metal |
| Item Package Quantity | 1 |
| Special Features | 150 |
| Included components | Slide Block |
| Batteries included? | No |
| Batteries Required? | No |

## Images

![CNCMANS MGN12H 300mm Linear Rail Guide with MGN12H Bearing Steel Carriage Block, Mini MGN12H Linear Guide Rail for 3D Printer and CNC Machine (MGN12-300mm H-Type) - Image 1](https://m.media-amazon.com/images/I/6194+ZPqT+L.jpg)

## Available Options

This product comes in different **Size Name, Style Name** options.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Great quality for the price
*by S***O on 10 March 2025*

Good quality, smooth motion, no slop or play and packaged like a tank.I’m going to buy more for my old delta and the y axis on an ender.

### ⭐⭐⭐ Good quality but sliders bind
*by M***. on 6 April 2025*

Good quality rails but two of the sliders are super tight - binding heavily. I know it's the sliders because I have a third slider that works perfectly on all rails.

### ⭐⭐⭐⭐⭐ Good Value and quality
*by B***Z on 24 October 2024*

I recently installed the MGN12H 500mm Linear Rail on my LumenPnP X axis, and I am thoroughly impressed. The rail is incredibly sturdy and provides smooth, precise movement, which is essential for accurate positioning. The installation was straightforward, and the build quality is top-notch. I appreciate the attention to detail in the design, which minimizes any play or wobble. Overall, this linear rail has significantly improved the performance of my machine, making it a great investment for anyone looking to enhance their CNC , 3D printer or pick & place. Highly recommended!

## Frequently Bought Together

- CNCMANS MGN12H 300mm Linear Rail Guide with MGN12H Bearing Steel Carriage Block, Mini MGN12H Linear Guide Rail for 3D Printer and CNC Machine (MGN12-300mm H-Type)
- 160 PCS T Nuts, 20 Series M3, M4, M5 T Slot Nuts

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**Shop now:** [https://www.desertcart.ro/products/540918116-cncmans-mgn12h-300mm-linear-rail-guide-with-mgn12h-bearing-steel](https://www.desertcart.ro/products/540918116-cncmans-mgn12h-300mm-linear-rail-guide-with-mgn12h-bearing-steel)

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*Product available on Desertcart Romania*
*Store origin: RO*
*Last updated: 2026-02-14*