---
product_id: 605977012
title: "12PCS LM12UU Linear Ball Bearings, 12mm Bore Dia Linear Motion Bushing with Double Side Rubber Seal Great for CNC Machine 3D Printer"
brand: "melife"
price: "€ 37.98"
currency: EUR
in_stock: true
reviews_count: 8
category: "Melife"
url: https://www.desertcart.it/products/605977012-12pcs-lm12uu-linear-ball-bearings-12mm-bore-dia-linear-motion
store_origin: IT
region: Italy
---

# Smooth low-friction linear motion 12mm bore diameter precision Double side rubber seal protection 12PCS LM12UU Linear Ball Bearings, 12mm Bore Dia Linear Motion Bushing with Double Side Rubber Seal Great for CNC Machine 3D Printer

**Brand:** melife
**Price:** € 37.98
**Availability:** ✅ In Stock

## Summary

> ⚙️ Elevate your motion game—smooth, sealed, and built to last!

## Quick Answers

- **What is this?** 12PCS LM12UU Linear Ball Bearings, 12mm Bore Dia Linear Motion Bushing with Double Side Rubber Seal Great for CNC Machine 3D Printer by melife
- **How much does it cost?** € 37.98 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.it](https://www.desertcart.it/products/605977012-12pcs-lm12uu-linear-ball-bearings-12mm-bore-dia-linear-motion)

## Best For

- melife enthusiasts

## Why This Product

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

## Key Features

- • **Precision Engineered 12mm Bore:** Fits seamlessly into your CNC or 3D printer setup for flawless linear motion.
- • **Standardized & Interchangeable:** Easily replace or upgrade with confidence thanks to industry-standard sizing and quality.
- • **Trusted by Makers & Pros Alike:** Join thousands of innovators who rely on MELIFE bearings for precision and durability.
- • **Low Friction, High Rigidity Design:** Ensures smooth, stable movement under heavy loads and long strokes—no compromises.
- • **Dual Rubber Seals for Ultimate Protection:** Keeps dust, dirt, and moisture out to extend bearing life and maintain peak performance.

## Overview

The MELIFE 12PCS LM12UU Linear Ball Bearings feature a 12mm bore diameter and double side rubber seals to prevent contamination, ensuring smooth, low-friction linear motion ideal for CNC machines and 3D printers. Made from durable carbon steel, these standardized bearings offer high rigidity and long service life, making them a reliable choice for professionals and hobbyists seeking precision and durability in their linear motion components.

## Description

Introduction of Linear Bearing 1.Made of Carbon Steel material, Double Side Rubber Seal Linear Motion Ball Bearing Bushing. 2.Great for linear motion on 3D printer, cnc, and other applications. 3.These ball bearing are fitted with two rubber dust sealed to prevent ingress of dirt, water and foreign matter. 4.Bearings may require lubrication and break in period. 5.Smooth moving, low friction, high rigidity and long life. Economical, easy to maintain replace.

Review: Worked out great - Great price, great purchase
Review: Good replacement for my Prusa MK4 - I broke one of the new bearings when assembling the printer so I purchased these as a replacement. You can feel a difference between the originals that feel more qualitative compared to these bearings but the one I replaced it's on for about 6 months and had no issues.

## Features

- Specifications: LM12UU, Bore Diamter (dr): 12mm, Outer Diameter (D): 21mm, Total Length (L): 30mm.
- Standardized production: Smooth moving, low friction, high rigidity and long life characteristics make it suitable for bearing various parts of various sizes, which are standardized and interchangeable.
- Double sealed design: Our Slide Bearing are carefully designed to be double sealed to prevent foreign particles from entering and preserve the quality of lubricant.
- Applications: It is generally used on 3D printers and CNC machines. As a design tool for linear motion products, it collaborates with linear bearing to guarantee superior sports performance under high load or long stroke environments.
- Buy with confidence: We consistently provide top-notch products and excellent services to our valued customers. If you encounter any issues with your purchase, please don't hesitate to reach out to us. We are committed to providing you with the best support possible.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0CL3VKRBR |
| Bearing Number | LM12UU |
| Bearing Type | Ball Bearing |
| Best Sellers Rank | #35,102 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #2 in Linear Ball Bearings |
| Brand | MELIFE |
| Brand Name | MELIFE |
| Compatible Lubricant | general purpose oil |
| Customer Reviews | 4.3 out of 5 stars 29 Reviews |
| Included Components | Linear Ball Bearings |
| Item Dimensions | 1.18 x 0.83 x 0.83 inches |
| Item Thickness | 21 Millimeters |
| Item dimensions L x W x H | 1.18 x 0.83 x 0.83 inches |
| Manufacturer | MELIFE |
| Material | Rubber Carbon Steel |
| Material Type | Rubber Carbon Steel |
| Outside Diameter | 21 Millimeters |
| UPC | 687117734372 |

## Product Details

- **Bearing Number:** LM12UU
- **Brand:** MELIFE
- **Item Thickness:** 21 Millimeters
- **Item dimensions L x W x H:** 1.18 x 0.83 x 0.83 inches
- **Material:** Rubber Carbon Steel

## Images

![12PCS LM12UU Linear Ball Bearings, 12mm Bore Dia Linear Motion Bushing with Double Side Rubber Seal Great for CNC Machine 3D Printer - Image 1](https://m.media-amazon.com/images/I/71UFOayfEmL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Worked out great
*by A***P on January 4, 2025*

Great price, great purchase

### ⭐⭐⭐⭐⭐ Good replacement for my Prusa MK4
*by R***T on November 27, 2024*

I broke one of the new bearings when assembling the printer so I purchased these as a replacement. You can feel a difference between the originals that feel more qualitative compared to these bearings but the one I replaced it's on for about 6 months and had no issues.

### ⭐⭐⭐ Decent value, not precise
*by R***. on February 8, 2025*

Well, you honestly get what you pay for. Do they work? Yes. Do they work well? Define well. But honestly, for the price of less than 1 THK LM8, you really can't complain. So great for the money. I needed 6 for my project so I have a second set. That would have cost me $180 for genuine THKs.

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**Shop now:** [https://www.desertcart.it/products/605977012-12pcs-lm12uu-linear-ball-bearings-12mm-bore-dia-linear-motion](https://www.desertcart.it/products/605977012-12pcs-lm12uu-linear-ball-bearings-12mm-bore-dia-linear-motion)

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*Product available on Desertcart Italy*
*Store origin: IT*
*Last updated: 2026-03-07*