Developed for ultra-low profile mechanisms demanding flawless axial location, the MF52-ZZ stands as an elite-tier micro ball bearing engineered with an integrated outer-ring flange. Featuring dual non-contact steel shields (ZZ), it blocks environmental particulates effectively while keeping its pre-filled specialized grease intact. Since these metallic shields do not rub against the inner ring, frictional resistance and startup torque remain exceptionally low, paving the way for ultra-smooth rotation. This makes it an indispensable component for sub-miniature 2mm bore applications, including high-precision RC servos, medical equipment, and micro-stepper motors.