---
product_id: 540491989
title: "SBR20-500mm Linear Rail Linear Rails and Bearings Kit 2Pcs SBR20 500mm Long Fully Supported Shaft Guide with 4Pcs SBR20UU Linear Bearing Slide Block Linear Guide for CNC Equipments"
brand: "cncmans"
price: "€ 188.47"
currency: EUR
in_stock: true
reviews_count: 10
category: "Cncmans"
url: https://www.desertcart.com.cy/products/540491989-sbr20-500mm-linear-rail-linear-rails-and-bearings-kit-2pcs
store_origin: CY
region: Cyprus
---

# 500mm precision length 4 ball bearing blocks 4-point contact design SBR20-500mm Linear Rail Linear Rails and Bearings Kit 2Pcs SBR20 500mm Long Fully Supported Shaft Guide with 4Pcs SBR20UU Linear Bearing Slide Block Linear Guide for CNC Equipments

**Brand:** cncmans
**Price:** € 188.47
**Availability:** ✅ In Stock

## Summary

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

## Quick Answers

- **What is this?** SBR20-500mm Linear Rail Linear Rails and Bearings Kit 2Pcs SBR20 500mm Long Fully Supported Shaft Guide with 4Pcs SBR20UU Linear Bearing Slide Block Linear Guide for CNC Equipments by cncmans
- **How much does it cost?** € 188.47 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.com.cy](https://www.desertcart.com.cy/products/540491989-sbr20-500mm-linear-rail-linear-rails-and-bearings-kit-2pcs)

## 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

- • **Precision Engineered 500mm Rails:** Smooth, stable linear motion for flawless CNC performance
- • **Complete Installation Kit Included:** All screws, wrench, and locking handles for hassle-free setup
- • **Robust Four-Point Contact Bearings:** Even load distribution and self-aligning for ultra-high accuracy
- • **Premium Carbon Steel & Aluminum Alloy:** Durable, corrosion-resistant materials built to last
- • **Versatile CNC & Industrial Applications:** Ideal for routers, mills, laser cutters, and more—upgrade your workflow

## Overview

The CNCMANS SBR20-500mm Linear Rail Kit features two 500mm carbon steel rails paired with four SBR20UU ball bearing blocks housed in aluminum alloy. Designed with a four-point contact system, it ensures smooth, low-friction linear motion with high load capacity and self-alignment. This kit includes all mounting hardware and tools for easy installation, making it perfect for professional-grade CNC machines, routers, and industrial automation setups.

## Description

CNCMANS SBR20-500mm Linear Rail Linear Rails and Bearings Kit 2Pcs SBR20 500mm Long Fully Supported Shaft Guide with 4Pcs SBR20UU Linear Bearing Slide Block Linear Guide for CNC Equipments: desertcart.com: Industrial & Scientific

Review: Exceptional Linear Rail Kit, smooth and precise. - Exceptional Linear Rail Kit, smooth and precise. I used this with a SpecTool Router Sled Kit. These rails precisely fit together with this sled and perform excellently. I'm very impressed with the rollability of these rails. They are smooth and durable. Overall construction is superior and resulted in a very professional router sled for my use. I am more than pleased. I did contact the seller with a couple of questions, and they quickly and accurately responded. It was a very nice experience. Highly recommended! These are an exceptional value for their high build quality and customer support.
Review: They do what they claim. - These did what they claim they do. No issues with these so far, at all. So I ordered more as I have many uses for them.

## Features

- PAKAGE: This linear rail set includes 2x SBR20-500mm linear rails, 4x SBR20UU bearing blocks, 1x 4mm wrench, 1x M6*12mm Locking Handle ( adjusting the tightness of the slider block ), 16x M6*20mm screws (connecting the sliding bearing blocks and plates ).
- MATERIAL: The guide rail is made of high-quality carbon steel, the bearing slider block is made of bearing steel with aluminum alloy housing, thickened material is not easy to damage; More steel bearing balls, low friction, light and flexible, smooth and unimpeded, longer service life.
- DESIGN: Adopt four-point contact design, which can withstand loads evenly in all directions and self-aligning function, can absorb the assembly error of the mounting surface, with high precision under high load.
- INSTALL: Aluminum alloy support with pre-drilled holes for ease of mounting. Conveniently install the bearing block by aligning the track with the mouth of the slide rail and pushing the bearing block until the it completely falls.
- APPLICATIONS: This Linear Guide Rail can help build an linear motion system. Widely used for DIY CNC routers, grinding machine, lathes, mills, machine tools, laser welding machines, punch, automatic cutting machine, printer, X-Y table, etc.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B09NBP4FTM |
| Bearing Number | 4 |
| Bearing Type | Ball Bearing |
| Best Sellers Rank | #40,584 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #32 in Linear Motion Guides |
| Bore Diameter | 20 Millimeters |
| Brand | CNCMANS |
| Compatible Lubricant | Grease |
| Date First Available | December 9, 2021 |
| Department | unisex-adult |
| Item Thickness | 20 Millimeters |
| Item Weight | 7.29 pounds |
| Item model number | 20173JH14R |
| Manufacturer | CNCMANS |
| Material | Carbon Steel |
| Package Dimensions | 26.5 x 3 x 3 inches |
| UPC | 730759598854 |

## Product Details

- **Bearing Number:** 4
- **Bore Diameter:** 20 Millimeters
- **Brand:** CNCMANS
- **Item Weight:** 3307 Grams
- **Material:** Carbon Steel

## Images

![SBR20-500mm Linear Rail Linear Rails and Bearings Kit 2Pcs SBR20 500mm Long Fully Supported Shaft Guide with 4Pcs SBR20UU Linear Bearing Slide Block Linear Guide for CNC Equipments - Image 1](https://m.media-amazon.com/images/I/41SpSuozOqL.jpg)
![SBR20-500mm Linear Rail Linear Rails and Bearings Kit 2Pcs SBR20 500mm Long Fully Supported Shaft Guide with 4Pcs SBR20UU Linear Bearing Slide Block Linear Guide for CNC Equipments - Image 2](https://m.media-amazon.com/images/I/41aU3JOxPNL.jpg)
![SBR20-500mm Linear Rail Linear Rails and Bearings Kit 2Pcs SBR20 500mm Long Fully Supported Shaft Guide with 4Pcs SBR20UU Linear Bearing Slide Block Linear Guide for CNC Equipments - Image 3](https://m.media-amazon.com/images/I/41yMliTcEmL.jpg)
![SBR20-500mm Linear Rail Linear Rails and Bearings Kit 2Pcs SBR20 500mm Long Fully Supported Shaft Guide with 4Pcs SBR20UU Linear Bearing Slide Block Linear Guide for CNC Equipments - Image 4](https://m.media-amazon.com/images/I/51O1VIa7cXL.jpg)
![SBR20-500mm Linear Rail Linear Rails and Bearings Kit 2Pcs SBR20 500mm Long Fully Supported Shaft Guide with 4Pcs SBR20UU Linear Bearing Slide Block Linear Guide for CNC Equipments - Image 5](https://m.media-amazon.com/images/I/51T9fTrg6SL.jpg)

## Available Options

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

## Questions & Answers

**Q: What is the diameter of SBR12/SBR16/SBR20/SBR25?**
A: Hello, their diameters are 12mm/16mm/20mm/25mm.

**Q: What material is the linear guide made of? Is it stainless?**
A: Hello, the material of linear guide is made of carbon steel, bearing steel, and aluminum alloy for rust resistance and high durability.

**Q: Are CAD drawings available?**
A: Hello, unfortunately we don't have CAD drawings, but we have detailed data reference drawings.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Exceptional Linear Rail Kit, smooth and precise.
*by J***L on September 15, 2025*

Exceptional Linear Rail Kit, smooth and precise. I used this with a SpecTool Router Sled Kit. These rails precisely fit together with this sled and perform excellently. I'm very impressed with the rollability of these rails. They are smooth and durable. Overall construction is superior and resulted in a very professional router sled for my use. I am more than pleased. I did contact the seller with a couple of questions, and they quickly and accurately responded. It was a very nice experience. Highly recommended! These are an exceptional value for their high build quality and customer support.

### ⭐⭐⭐⭐⭐ They do what they claim.
*by T***S on January 4, 2026*

These did what they claim they do. No issues with these so far, at all. So I ordered more as I have many uses for them.

### ⭐⭐⭐⭐ Great rails but with just a little bit of flex
*by L***X on July 28, 2022*

Great rails but with just a little bit of flex. I used these for a router sled. There were two drawbacks. The first was hunting for the correct screw size of the holes on the mounting blocks. (Metric6 by the way) The second if a little bit of flex in the rails. For a full size router I may have to go back and add some steel underneath the rails so they don't sag.

## Frequently Bought Together

- CNCMANS SBR20-500mm Linear Rail Linear Rails and Bearings Kit 2Pcs SBR20 500mm Long Fully Supported Shaft Guide with 4Pcs SBR20UU Linear Bearing Slide Block Linear Guide for CNC Equipments
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*Product available on Desertcart Cyprus*
*Store origin: CY*
*Last updated: 2026-02-23*