The Nachi 6311-2NSENR sealed deep groove ball bearing features an inner diameter of 55mm, an outer diameter of 120mm, and a width of 29mm. It includes a snap ring for secure axial location and a C3 internal clearance for enhanced performance under thermal expansion. Constructed with high-quality JIS SUJ2 steel, this bearing is double sealed with rubber seals on both sides to prevent contamination and grease leakage, supporting smooth, quiet operation and longer service life. It is designed for high-speed rotation and can sustain radial and axial loads, making it suitable for various industrial applications requiring durability and precision.