The SKF 6310 2Z/C3 is a hybrid ceramic deep-groove ball bearing with a 50 mm bore, 90 mm outer diameter and 20 mm width. Its steel rings run silicon-nitride ceramic balls, giving electrical insulation against shaft currents and higher permissible speeds compared with an all-steel bearing. Two metal shields (2Z) retain lubricant and exclude contamination; C3 internal clearance accommodates higher operating temperatures.