Open Pillow blocks are for use with CONTINUOUS supported shaftingFor use with Class XL shaftingBall Bushing Bearings are included and factory installed in each Pillow BlockSpecificationsSpecificationsValueAdjustable/Not AdjustableNot AdjustableClosed/OpenOpenMaterialSteel; Plastic; RubberNumber of Ball Circuits8Single/TwinSingleTemperature Max185 °FUPC Number662486274841Weight2.3 lbDimensionsDimensionValue[d] Shaft, Nominal Diameter1 in[A]3.25 in[A1]1.19 in[A2]1.25 in[Alpha]30 °[B]2.63 in[C]0.875 in[C] Tolerance± 0.010 in[E]0.56 in[E1]2.875 in[E1] Tolerance± 0.010 in[E2]1.75 in[E2] Tolerance± 0.010 in[F1]0.38 in[H]1.187 in[H] Tolerance± 0.003 in[H1]2 in[N]0.22 inPerformancePerformanceValueLoad Capacity, Dynamic1900 lbf