HCP215-48 3" Pillow Block Mounted Bearing - 3 1/4" Bearing HCP217-52 Pillow Block Cast Housing Mounted Bearing - 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. HCP215 48 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: 1 Bearing