This is a two-bearing plummer block housing set (PDNI 312 KPL) designed to carry a shaft in two bearing positions on a common base. The housing, cap and grease flinger disc are made of grey cast iron GG 20. The bore diameter d is 48 mm, with the outer bore diameter da at 60 mm. Overall footprint dimensions read from the drawing: A = 460 mm, A1 = 383.5 mm, A2 = 334 mm, A3 = 476 mm, D = 130 mm, H = 80 mm, H1 = 165 mm, H2 = 25 mm, J = 210 mm, J1 = 340 mm, L = 260 mm, L1 = 696 mm, L2 = 437 mm, N = 19 mm, b = 70 mm, w = 68.0 mm. Both bearing positions are fitted with grease nipples, allowing relubrication with grease without dismounting the housing. The set is supplied complete with seals, which keep contaminants away from the bearing seats along the shaft. According to the manufacturer's catalogue, this housing type is indicated primarily for fan shaft assemblies, where the two-seat design on one shaft line supports consistent alignment between both bearing positions.