LM12UU Linear Motion Ball Bearing, 12mm ID 20mm OD 30mm Height, Double Sealed Steel Rail Guide Bushing for 3D Printer CNC Router Machine

Features: These liner-motion bearings are made of bearing steel for low noise and long service life. They are double sealed to avoid entering and save lubricant. Bearings have a 12mm inner diameter, a 20mm outer diameter, and a 30mm height. These are great for small hobby 12mm shaft/rod projects such as 3D printer, engraving machine. There comes total 10 pieces bearings which you may use for many different projects. Specifications: Type: LM12UU Material: Bearing steel Inner Diameter: 12mm / 0.47" Outer Diameter: 20mm / 0.78" Height: 30mm / 1.18" Quantity: 10pcs Package Includes: 10 x Bearings

• Linear Motion Bearings: Industrial-grade bearing steel construction ensures smooth low-noise operation and extended operational longevity across repeated cycles
• 12mm Inner Diameter: Precisely machined 12mm inner diameter fits standard hobbyist shafts and rods commonly used in desktop 3D printers and CNC engravers
• 20mm Outer Diameter: Compact 20mm outer diameter enables tight integration into space-constrained motion assemblies without sacrificing structural integrity
• 30mm Height Profile: Consistent 30mm height supports uniform load distribution and stable alignment when mounted in parallel bearing configurations
• Double-Sealed Design: Dual rubber seals retain lubricating oil while blocking dust and particulate ingress during continuous use in workshop environments