BearingsWhy Choose This:★Inner Dia.*Outer Dia.*Thickness=3mmx8mmx4mm★Features: simple configuration,high speed,less coefficient of friction,less vibration and noise.★Both sided steel dust shields to prevent ingress of dirt and foreign matter, high temperature resistance.★Miniature Single Row Deep Groove Ball Bearing.Bearing made from Chrome Steel(Gcr15) for durability and resistance.★Deep Groove Ball Bearings are one of the most widely used rolling bearings. They are used to accommodate radial and axial loads in both directions.
eBay