The 42 mm steel sleeve bearing compatible with bearing numbers 6004 and 6302 features an outer diameter of approximately 45 mm (1.771 inches) with a tolerance of ±0.05 mm and a sleeve length of 20 mm. The 6004 deep groove ball bearing has an inner diameter of 20 mm, outer diameter of 42 mm, and width of 12 mm, made from high-quality roller bearing steel, sealed on both sides, supporting dynamic loads up to 9.4 kN and speeds up to 11,000 rpm. The 6302 bearing variant measures 15 mm inner diameter, 42 mm outer diameter, and 13 mm width, designed for high rotational speeds and radial loads, with steel rings and single-row raceways. These components offer robust performance, low friction, and accommodate both radial and axial loads, suitable for various industrial applications.