PREMIUM BUILD QUALITY Our MR63ZZ 3x6x2.5mm Metal Shielded Bearings are constructed using High Carbon Chrome Steel (Gcr15), ensuring durability even under demanding conditions. EFFICIENT PRECISION ENGINEERING These bearings feature non-contact double metal shielding, which minimizes friction for high performance while effectively keeping contaminants at bay. IMPRESSIVE TOLERANCES Engineered with inner bore diameter tolerances accurate to ±0.0002mm and outer diameter tolerances accurate to ±0.0003mm, our bearings deliver exceptional precision. HIGH RPM CAPABILITY Designed to operate with a maximum RPM rating of up to 80,000, these bearings maintain smooth functions even at high speeds. WARRANTY THAT SPEAKS VOLUMES Backed by a 120-day warranty, our bearings exemplify quality assurance, with coverage facilitated through the retailer. Explore the world of precision and reliability with our expertly crafted bearings, designed for optimal performance in a variety of applications.