Open Pillow blocks are for use with CONTINUOUS supported shaftingFor use with Metric class Shafting.Ball Bushing Bearings are included and factory installed in each Pillow BlockSpecificationsSpecificationsValueBlack OxideBlack AnodizeClosed/OpenOpenMaterialAluminum; Plastic; RubberNumber of Ball Circuits8Self AlignmentSelf-aligningSingle/TwinTwinTemperature Max185 °FWeight0.58 kgDimensionsDimensionValue[d] Shaft, Nominal Diameter20 mm[A]60 mm[A1]30 mm[A1] Tolerance± 0.020 mm[Alpha]50 °[B]104 mm[E1]45 mm[E1] Tolerance± 0.1 mm[E2]76 mm[E2] Tolerance± 0.1 mm[G2] Access for LubricationM6 X1[H]25 mm[H] Tolerance±0.020 mm[H1]41 mm[N]6.60 mmPerformancePerformanceValueLoad Capacity, Dynamic8000 NStatic Load Rating8800 N