Single-row deep groove ball bearing,Dimensions:, Hole diameter (inner, d): 40 mm, Outer Diameter (D): 80 mm, Width (B): 18 mm, Design (2Z): The suffix indicates that the bearing is equipped with "-2Z"two metal shields on both sides. These screens are touch screens (not in direct contact with the inner ring) and are designed to prevent the ingress of dried dust and debris, while still allowing high rotational speeds., Performance:, Basic dynamic load rating (C): 29.5 kN, Basic static load rating (C₀): 19 kN, Speed limit: Up to 15,000 r/min (Due to the presence of the screens, the speed is slower than the open version).