The Timken HA590577 is a hub unit bearing assembly designed for wheel-end service on heavy-duty truck and trailer axle applications. Timken builds this unit preset, pre-greased, and pre-sealed at the factory, eliminating the bench setup steps required with loose bearing kits. The preset load is fixed during manufacturing, and the internal grease fill and seals are in place at installation, so the unit goes on ready for service. Sold individually by Pro Gear and Transmission. Call us to confirm proper fit for your specific axle and application before ordering.
Features
Timken part number HA590577
Hub unit bearing assembly - sold as a complete unit (each)
Factory preset bearing load - no adjustment required at installation
Pre-greased and pre-sealed at the factory
Direct replacement hub unit bearing assembly for applicable wheel-end positions
