The 6702-ZZ is a specialized, ultra-lightweight deep groove ball bearing engineered for modern applications that demand minimal spatial footprint and maximum rotational efficiency. Featuring dual non-contact metal shields (ZZ), this model effectively retains premium factory grease while delivering significantly lower rotational friction than standard rubber-sealed variants. Measuring 15mm on the bore, an outer diameter of 21mm, and a remarkably slim 4mm width, the 6702-ZZ is an essential component for UAV mechanisms, gimbal stabilizers, and sophisticated medical devices where consistent, low-torque operation is critical.