This split plummer block unit accommodates a shaft with a bore diameter of 28 mm, forming a two-bearing housing arrangement on a common shaft. The housing, cap, and grease-guiding disc are cast from grey iron GG 20. Key mounting dimensions read from the catalogue drawing are: A = 260 mm, D = 80 mm, H = 60 mm, J = 150 mm, L = 190 mm, N = 15 mm, b = 45 mm, w = 49.5 mm, A1 = 195.5 mm, A2 = 160.0 mm, A3 = 274 mm, H1 = 116 mm, H2 = 18 mm, J1 = 175 mm, L1 = 394 mm, L2 = 239 mm, and da = 35 mm. Both bearing positions are fitted with grease nipples, allowing relubrication with grease without dismantling the housing. The unit is supplied complete with seals, which protect the bearing positions against contamination along the shaft. According to the manufacturer's catalogue, the PDNI series housing is intended primarily for fan assembly applications, where a shaft carries two bearing positions within a single housing structure.