Smooth, low-friction motion for precise CNC guidance with 12mm bore linear bearings featuring double seals for dust resistance and long life, supplied as a convenient 12-pack to power multi-axis machines

12mm Bore Linear Bearings with Double Seal, 12-Pack ✔️ Bore 12mm, OD 21mm, L 30mm, sealed ball bearing design, 12-pack

These linear bearings feature a 12 mm bore and robust carbon steel construction with double side rubber seals. They’re designed for smooth, low-friction motion and long life, making them a great fit for CNC machines, 3D printers, and other precision linear motion applications. Pack of 12 bearings ensures easy stocking and interchangeability.

✅ Bore diameter: 12 mm
✅ Outer diameter: 21 mm
✅ Length: 30 mm
✅ Material: carbon steel with double side rubber seals
✅ Pack size: 12 bearings in the set

💡 What is a linear bearing used for in CNC machines and 3D printer builds with a 12 mm bore?

This handy component guides precise motion with low friction and long life. - It provides smooth, straight travel for moving parts - Works with standard rails and a 12 mm bore for easy upgrades - The double seal helps keep lubricant in and dirt out - Ideal for compact, rigid linear motion in hobby and professional setups