DescriptionOpen Pillow blocks are for use with CONTINUOUS supported shaftingFor use with SSRA linear Race or Class L shaftingBall Bushing Bearings are included and factory installed in each Pillow BlockReplacement part for some Linear Guide assemblies and Slide TablesDimension[d] Shaft, Nominal Diameter0.5 in[A]1.12 in[B]1.5 in[E1]0.812 in[E2]1.25 in[N]#8-32Recomended Bolt#8-32