GJP 5x10x4mm Shielded Type Metric Miniature Ball Bearing MR105ZZ, which is small radial ball bearing, GJP designs this bearing with ABEC-3 grade at least(and could be reaching to ABEC-7), Z3V3 quality level and greased with Exxon-Mobil Polyrex EM grease (could be wide temperature requirement greasing), chrome steel material for bearing race and steel ball, with Super-Finished raceway, and there are two metal shield on both sides of bearings, and customer could require to use the NBR rubber seal to sustitube the metal shield, which could be used on light-duty but high precision and high speed requirements place, normally these bearings are used in hobby industry like skating board or racing car, Boats, Robotics,Bycycle and many other applications which needs tough working environments, after years of experience, our Miniature Bearings were proved to has excellent performance and good durability, and because of it’s feature of smaller size, they could not be individual packed and instead, they are packed with plastic tube and then put into the box, which the distributor normally could sell with tube or box quantity.
GJP designs our miniature ball bearing for applications of small gyros, anemometers, miniature gearboxes, small motors and radio controlled models etc.
https://www.bearingfamily.com/radial-ball-bearing/miniature-ball-bearing/5x10x4mm-shielded-type-metric-miniature-ball.html