This insert bearing locates on the shaft by means of an eccentric locking collar, with the inner ring extended on both sides and a spherically ground outer ring seated in the housing bore. The bore diameter d is 100 mm, weight is 12.6 kg, and dimension B equals 128.6 mm, C equals 54 mm, D equals 215 mm. Further reference dimensions from the drawing: c = 177.0 mm, m = M 20 X 1.50, s = 50.0 mm, c0 = 135.0 mm, d2 = 146.0 mm — read these against the catalog drawing when fitting the housing and shaft. Because the locking is eccentric, the design is intended for a fixed direction of rotation only; this must be respected when mounting to avoid loosening of the collar. Both sides are sealed, and the bearing is factory packed with lithium grease class 2, so no separate seal or initial lubrication needs to be added at assembly. The dimensional and constructional equivalent listed for this symbol is SKF YEL 320.