About this item

⚙️ LM12UU Linear Ball Bearing

📝 Description

The LM12UU is a 12mm linear ball bearing designed for smooth and precise linear motion on 12mm shafts. With its steel body and multiple rows of recirculating balls, it ensures low friction, high accuracy, and long service life in mechanical systems.

🔧 Features

• 🔩 Inner Diameter (ID): 12mm
• 📏 Outer Diameter (OD): 21mm
• 📐 Length: 30mm
• 🏗️ Material: High-carbon chrome steel
• ⚙️ Type: Linear motion ball bearing (LM series)
• 🔁 Smooth sliding with recirculating ball design
• ⏱️ Long service life and high load capacity

🛠️ Applications

• 🤖 3D Printers (Prusa, Creality, etc.)
• ⚙️ CNC machines and milling equipment
• 🏗️ Linear guides for automation systems
• 🚀 Robotics and DIY projects
• 🖨️ Precision equipment requiring stable linear motion

⚠️ Notes

• ✅ Ensure shaft diameter is exactly 12mm for proper fit.
• 📦 Supplied as single unit unless otherwise specified.
• 🔧 Use with hardened steel shafts for best performance.

✨ Key Advantages

• 🧊 Low friction for smooth motion
• ⚡ High durability with hardened steel
• 🔄 Interchangeable with other LM series bearings
• 🔩 Easy installation in standard linear housings
• 📈 High precision for demanding mechanical systems

🔗 Useful Links

• 📄 LM12UU Datasheet