This insert bearing is secured on the shaft by means of an eccentric locking collar, with the inner ring extended on one side. Sealing is provided by a stamped steel washer fitted with a rubber lip. The bore diameter d is 45 mm, weight is 0.69 kg. Further dimensions read from the catalogue drawing: B = 43.7, C = 22, D = 85, c = 32.5, m = M 10 x 1.25, s = 11.0, c0 = 20.4, d1 = 54.5, d2 = 63.0. The eccentric collar locking system allows secure axial fixing on the shaft without additional set screws acting directly on the shaft surface, which simplifies mounting and dismounting on rotating shafts. The rubber-lipped sealing washer restricts ingress of dust and coarse contamination at the bore. The extended inner ring on one side provides additional shaft support at the seal location. Dimensioned as SA 209 AV12, this bearing corresponds to SKF YET 209.