5pcs U-Groove Ball Bearing Pulley, Nylon Guide Bearing Wheel U-Type Groove 8x34x12mm, Roller Bearings for 3D Printers, Doors, Windows, White

Package Contents: 5 U-groove bearings. (ID = 8mm, OD = 34mm, thickness = 12mm, groove width = 7mm)
Wide Application: Widely used in pulleys, conveyor belts, guide rail systems, suitable for automated machinery, furniture hardware accessories, sliding doors, glass sliding doors, aluminum doors, and DIY projects.
Features: Made with a carbon steel bearing and a nylon guide pulley for superior corrosion resistance and high load capacity. The outer nylon plastic ring reduces operating noise and protects the contact surface from scratches. Particularly suitable for humid environments requiring smooth movement and oxidation resistance.
Easy Installation: First, clean the shaft and mounting area, press the bearing vertically into the shaft seat, ensuring the U-shaped groove faces the load-bearing side, and test the idle without binding.
Notes: Manual measurements may have slight variations within a reasonable tolerance. The outer nylon plastic ring is not suitable for high-speed applications. Regular grease application is recommended to extend its service life.