Buyers Products Eccentric Locking Collar Style Flange Bearings are equipped to handle high-speed applications without risking drive shaft slippage. The driveline-grade steel bearing is mounted in a cast iron housing, which helps make the flanges rugged and durable. The included grease fitting ensures ease of maintenance for continual smooth operation. The standard 4 bolt mounting design provides a secure attachment for the bearing. The eccentric locking collar means that the drive shaft will not slip, even at high RPMs. The flange bearing has a self-aligning design that allows for a small amount of shaft misalignment.