The MR85-ZZ is a specialized single-row miniature deep groove ball bearing characterized by its exceptionally slim profile. With a 5mm bore and an 8mm outer diameter, this 5x8x2.5 mm component is engineered for highly restricted radial spaces where weight reduction and precise rotational mechanics are paramount. Protected by dual non-contact pressed steel shields (ZZ), it effectively guards internal raceways against dust and contaminants while ensuring zero frictional drag, making it the premier choice for ultra-compact, high-speed instrumentation.