---
product_id: 563140913
title: "CNCMANS Linear Rail 2PCS SBR12 300mm Fully Supported Linear Rail Shaft Guide 12mm with 4PCS SBR12UU Slide Bearing Block, Linear Rails and Bearings Kit for CNC Machine"
brand: "cncmans"
price: "KD 43.12"
currency: KWD
in_stock: true
reviews_count: 5
category: "Cncmans"
url: https://www.desertcart.com.kw/products/563140913-cncmans-linear-rail-2pcs-sbr12-300mm-fully-supported-linear-rail
store_origin: KW
region: Kuwait
---

# 300mm precision length 4x SBR12UU bearing blocks 12mm hardened steel shaft CNCMANS Linear Rail 2PCS SBR12 300mm Fully Supported Linear Rail Shaft Guide 12mm with 4PCS SBR12UU Slide Bearing Block, Linear Rails and Bearings Kit for CNC Machine

**Brand:** cncmans
**Price:** KD 43.12
**Availability:** ✅ In Stock

## Summary

> ⚙️ Upgrade your CNC game with precision that moves you forward!

## Quick Answers

- **What is this?** CNCMANS Linear Rail 2PCS SBR12 300mm Fully Supported Linear Rail Shaft Guide 12mm with 4PCS SBR12UU Slide Bearing Block, Linear Rails and Bearings Kit for CNC Machine by cncmans
- **How much does it cost?** KD 43.12 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.com.kw](https://www.desertcart.com.kw/products/563140913-cncmans-linear-rail-2pcs-sbr12-300mm-fully-supported-linear-rail)

## 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

- • **Plug & Play Installation:** Pre-drilled aluminum rails make mounting on X, Y, Z axes effortless and fast.
- • **Fast US Warehouse Shipping:** Get your kit quickly with domestic fulfillment—no more waiting, no more delays.
- • **Durable Hardened Carbon Steel:** Case-hardened shafts with chrome plating resist rust and wear, ensuring long-lasting performance.
- • **Optimized for High Efficiency:** Reduced drive power and heat generation boost your machine’s productivity and lifespan.
- • **Precision Engineered for Smooth Motion:** Experience ultra-low friction and no stick-slip effect for flawless CNC axis control.

## Overview

The CNCMANS Linear Rail Kit includes two 300mm fully supported SBR12 rails and four SBR12UU bearing blocks made from hardened carbon steel with chrome plating. Designed for CNC machines, it offers smooth, low-friction linear motion with high precision and durability. Pre-drilled aluminum rails simplify installation on X, Y, and Z axes. Shipped quickly from a US warehouse, this kit is ideal for professionals seeking reliable, long-lasting linear guides.

## Description

CNCMANS has been committed to providing superior 3D printers and accessories services.The linear track is uniformly stressed, sliding smoothly, made of carbon steel, corrosion-resistant,and high-temperature resistant.The linear bearing can travel infinitely together with the cylindrical shaft. Because of pointcontact between ball and straight axis, so the load is small. The ball is spinning with the smallestfriction, it can run a high precision and smooth motion.Flange linear bearings can be divided into:round flange type, oval flange, guide wheel flange, guide the oval flange type, plus long roundflange type.The shaft is case hardened. If you use normal steel shafts, the bearings will cut them up in notime. So make sure what you buy is case hardened!Specifications:Brand: CNCMANSModel: SBR12Shaft Diameter: 12mmSBR12 Linear Rail Kits Includes:2x SBR12-300mm Linear Slide Guide Rails4x SBR12UU Bearing BlocksFeatures:Steel material and hardened caseHigh accuracy and strong durabilitySmooth moving, low friction, high rigidity and long working lifeSuits X, Y, Z axis,perfect items for your CNC project

Review: We put these on a router sled tube and it does just what we wanted it to. It is a stop at the end of the tube so the router can not go off the end of the sled.
Review: Good quality, great buy

## Features

- PREMIER SBR12 KIT-This linear rail set includes 2pcs of 300mm(11.81inch) long sbr12 fully Supported rail shafts and 4pcs Industry-standard sbr12uu bearing slide block.
- HIGH-QUALITY- Linear rails kit are made of carbon steel and aluminum alloy, surface chrome plating treatment beautiful anti-rust, high hardness, more durable.
- EASY TO INSTALL-Aluminum support rail with pre-drilled holes for ease of mounting. Suits X, Y, Z axis.
- HIGH PRECISION- No stick-slip effect, less heating, reduced drive power required. Low friction loss, high transmission efficiency.
- EFFICIENT LOGISTICS- Our shop has its own warehouse in US, shipping through the US warehouse, you can receive the item quickly.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B09NBP1N5Z |
| Batteries Required? | No |
| Batteries included? | No |
| Best Sellers Rank | 169,791 in Business, Industry & Science ( See Top 100 in Business, Industry & Science ) 318 in Linear Motion Guides |
| Customer Reviews | 4.5 4.5 out of 5 stars (94) |
| Date First Available | 8 April 2022 |
| Item Package Quantity | 1 |
| Item Weight | 1.4 kg |
| Item model number | Z3BDY156R1034SBCI |
| Manufacturer | CNCMANS |
| Material | Carbon Steel |
| Package Dimensions | 32.41 x 12.19 x 7.19 cm; 1.4 kg |
| Part Number | Z3BDY156R1034SBCI |
| Size | 300mm |
| Style | SBR12 |

## Product Details

- **Bearing number:** sbr12uu
- **Brand:** CNCMANS
- **Compatible lubricant:** Grease
- **Item weight:** 1400 Grams
- **Material:** Carbon Steel

## Images

![CNCMANS Linear Rail 2PCS SBR12 300mm Fully Supported Linear Rail Shaft Guide 12mm with 4PCS SBR12UU Slide Bearing Block, Linear Rails and Bearings Kit for CNC Machine - Image 1](https://m.media-amazon.com/images/I/61JUt0YAC7L.jpg)
![CNCMANS Linear Rail 2PCS SBR12 300mm Fully Supported Linear Rail Shaft Guide 12mm with 4PCS SBR12UU Slide Bearing Block, Linear Rails and Bearings Kit for CNC Machine - Image 2](https://m.media-amazon.com/images/I/714MHRSUUrL.jpg)
![CNCMANS Linear Rail 2PCS SBR12 300mm Fully Supported Linear Rail Shaft Guide 12mm with 4PCS SBR12UU Slide Bearing Block, Linear Rails and Bearings Kit for CNC Machine - Image 3](https://m.media-amazon.com/images/I/61mp2wXtO2L.jpg)
![CNCMANS Linear Rail 2PCS SBR12 300mm Fully Supported Linear Rail Shaft Guide 12mm with 4PCS SBR12UU Slide Bearing Block, Linear Rails and Bearings Kit for CNC Machine - Image 4](https://m.media-amazon.com/images/I/613A2Vz7fKL.jpg)
![CNCMANS Linear Rail 2PCS SBR12 300mm Fully Supported Linear Rail Shaft Guide 12mm with 4PCS SBR12UU Slide Bearing Block, Linear Rails and Bearings Kit for CNC Machine - Image 5](https://m.media-amazon.com/images/I/61cCXYwOLpL.jpg)

## Available Options

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

## Customer Reviews

### ⭐⭐⭐⭐⭐ Review
*by A***R on 15 January 2024*

We put these on a router sled tube and it does just what we wanted it to. It is a stop at the end of the tube so the router can not go off the end of the sled.

### ⭐⭐⭐⭐⭐ Review
*by J***R on 9 November 2025*

Good quality, great buy

### ⭐⭐⭐⭐ Review
*by L***. on 4 June 2024*

Se desliza muy bien lo utilicé para un CNC manual

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**Shop now:** [https://www.desertcart.com.kw/products/563140913-cncmans-linear-rail-2pcs-sbr12-300mm-fully-supported-linear-rail](https://www.desertcart.com.kw/products/563140913-cncmans-linear-rail-2pcs-sbr12-300mm-fully-supported-linear-rail)

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*Product available on Desertcart Kuwait*
*Store origin: KW*
*Last updated: 2026-03-15*