6004 2RS Ball Bearings 20x42x12mm Double Protection Precision Bearing for Lathe Bench DIY 3D Printer Motor Milling Machines 10pcs

This 6004 RS ball bearing is made of high-density bearing steel, which makes it particularly sturdy and durable. It is characterized by high hardness and high load capacity, retains its high wear resistance even at high speeds and has a long service life. Double-sided seal of the groove ball bearing prevents dust, water and other contaminants from entering, ensures optimal lubrication and smooth operation of internal components and reduces maintenance effort. Our groove ball bearing kit is precision manufactured to provide extremely low friction coefficient that supports high rotation speed and reduces overheating. Low noise, it provides a quiet environment. You will receive 10pcs 6004-2RS precision bearings with an inner diameter of 20mm, outer diameter 42mm, thickness 12mm, and precision class P0. It is compatible with a variety of devices and easy to install. This ball bearing kit is suitable for all kinds of industrial machinery. Ideal for DIY projects, 3D printers, tool machines, transmission systems, electric motors and mechanical equipment that require reliability under moderate to high load.