The 6910-ZZ is a single-row, thin-section deep groove ball bearing from the ISO 6900 series, fitted with double non-contact pressed-steel shields for light contamination protection at minimal drag penalty. Measuring 50 mm bore, 72 mm outer diameter, and 12 mm width, it belongs to the same slim-ring family as other 6900-series bearings but targets applications where the priority is speed capability and low running torque rather than maximum contamination exclusion. With a grease limiting speed of 9,000 r/min and an oil limiting speed of 11,000 r/min, the 6910-ZZ runs meaningfully faster than its rubber-sealed 6910-2RS counterpart — making it the preferred shielded configuration for precision motor spindles, encoder drives, servo actuators, and optical equipment rotating at sustained higher speeds within a compact 50 mm bore housing.