This deep groove ball bearing carries radial and moderate axial loads in a single row of balls, with a bore of 55.0 mm, outside diameter of 120.0 mm, and width of 29.0 mm. Design belongs to Generation C, fitted with a steel sheet metal cage (JN) and seals on both sides (2HRS), giving a net mass of 1.35 kg. Radial internal clearance is CN (Group N), and the bearing is rated for a limiting speed of 5300 1/min. The seals on both sides keep grease inside and contaminants out, so the bearing can run without external protection once initially greased. Standard CN clearance suits general-purpose mounting without preload requirements, and the steel cage keeps the ball set stable up to the stated limiting speed. Bore type Z should be checked against shaft fit requirements before mounting.