This housing accommodates two bearing seats on a single shaft, with a bore diameter (d) of 70 mm. The housing, cover, and grease-guiding disc are made of grey cast iron GG 20. Both bearing positions are equipped with grease nipples, and the unit is supplied with seals. Reading from the catalog drawing, dimension A equals 556 mm, D equals 170 mm, H equals 112 mm, J equals 260 mm, L equals 320 mm, N equals 19 mm, b equals 80 mm, w equals 78.0 mm, A1 equals 466.5 mm, A2 equals 405.0 mm, A3 equals 576 mm, H1 equals 220 mm, H2 equals 30 mm, J1 equals 420 mm, L1 equals 856 mm, L2 equals 525 mm, and da equals 80 mm. The two-seat design on a common shaft suits setups requiring aligned support at both bearing positions, as referenced in the manufacturer's catalog primarily for fan assemblies. The grease nipples at both positions allow relubrication without disassembly, and the supplied seals protect the bearing seats from contamination during operation. The cast iron construction of the housing, cover, and grease-guiding disc provides the structural base for the two bearing seats along the shaft line.