Closed Pillow blocks are for use with END supported shafting.For use with MM class Shafting.Ball Bushing Bearings are included and factory installed in each Pillow BlockAluminum is black oxide coated (not pictured)SpecificationsSpecificationsValueBlack OxideBlack AnodizeClosed/OpenClosedMaterialAluminum; Plastic; RubberNumber of Ball Circuits10Self AlignmentSelf-aligningTemperature Max185 °FWeight0.21 kgDimensionsDimensionValue[d] Shaft, Nominal Diameter16 mm[A]53 mm[A1]26.5 mm[A1] Tolerance± 0.020 mm[B]43 mm[E1]40 mm[E1] Tolerance± 0.1 mm[E2]26 mm[E2] Tolerance± 0.1 mm[G2] Access for LubricationM6 X 1[H]22 mm[H] Tolerance± 0.020 mm[H1]42 mm[N]5.30 mmPerformancePerformanceValueLoad Capacity, Dynamic2200 NStatic Load Rating2400 N