HCP215-48 3" Pillow Block Mounted Bearing with 3 1/4" Bearing HCP217-52 Pillow Block Cast Housing Mounted Bearing with Eccentric Locking CollarHCP215 48 3" Pillow Block Cast Housing Bearing with Eccentric Locking Collar 3" Inner Diameter Bearing This is the most common type of mounted ball unit with eccentric collar. Item: HCP215 48 Type: Mounted Ball Bearing with eccentric collar Shaft Dia: 3" inch Bolt Size: 3 4" inch Bearing No: UC215 48 Basic Load (Cr): 67. 4 KN Basic Load (Cor): 48. 3 KN Quantity: One Bearing