10pcs MR84-2RS Ball Bearings - Miniature Deep Groove Ball Bearing Double Blue Rubber Sealed Chrome Steel for RC Cars/Planes/Drone/Robotics and Small Electric Motors(4x8x3mm)
Pack of 10pcs, double-rubber sealed deep groove. prevent impurities from entering.
Made of bearing steel for durability and resistance to rust, corrosion and deformity under heavy loads, and is Shields on both sides keeping lubricant in and contaminants out.
It has a revolutions per minute (RPM) limit of 30,000 with grease lubrication.
Rolling bearings use rolling elements to maintain the separation between moving parts to reduce rotational friction and support radial and axial loads.
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