This housing unit accommodates a shaft diameter of 20 mm and is designed for use with bearing insert HC 204. The mounting dimensions, as read from the catalogue drawing, are as follows: B = 43.5 mm, C = 11.5 mm, E = 78 mm, K = 9.0 mm, L = 100 mm, P = 0.5 mm, R = M6, U = 25.9 mm, c = 12.8 mm, s = 2 mm, B2 = 20.0 mm, c0 = 6.6 mm, Zh8 = 62 mm. The unit weighs 0.57 kg. The dimension L = 100 mm and E = 78 mm define the bolt hole spacing and base footprint, which need to be checked against the mounting surface before installation. The fixing holes are matched to R = M6 fasteners. The bearing insert HC 204 fitted into this housing allows the shaft to be secured and aligned according to the mounting dimensions given above, with the housing body providing the support structure and load path to the mounting surface.