This insert bearing carries a spherically ground outer ring and is secured to the shaft by means of an eccentric locking collar, marking 215 R3 as intended for a fixed direction of rotation. The bore diameter d is 75 mm, with the extended inner ring on both sides supporting shaft engagement. Further dimensions read from the catalogue drawing: B = 67.1 mm, C = 28 mm, D = 130 mm, c = 62.0 mm, m = M 12 x 1.25, s = 21.5 mm, c0 = 44.5 mm, d1 = 90.0 mm, d2 = 100.0 mm. Weight is given as 2.90 kg, relevant for handling during installation. The unit is sealed on both sides and factory-filled with lithium grease class 2, suitable for continuous operation without additional lubrication intervals as specified by the manufacturer. The eccentric collar locking system requires the shaft to rotate in one constant direction to maintain clamping, which should be respected during mounting. The dimensional and constructional equivalent listed is SKF YEL 215.