The Timken HA590821 is a hub unit bearing assembly designed as a preset, pre-greased, and pre-sealed unit. Timken engineers these hub assemblies to leave the factory with bearing preload already set, eliminating the field adjustment step that introduces variability during installation. The sealed, pre-greased design means the bearing cavity arrives protected and lubricated - no packing or adjustment needed before mounting. This hub unit measures 4.44 inches in height with a 5.94 x 5.94 inch footprint, sold individually. A genuine Timken part from Pro Gear and Transmission. Call us to confirm proper fitment for your axle application before ordering.
Features
Preset bearing load - no field adjustment required at installation
Pre-greased from the factory - bearing cavity arrives fully lubricated
Pre-sealed design protects bearing surfaces from contamination
Dimensions: 4.44 in. height x 5.94 in. x 5.94 in.
Sold individually (each)
Genuine Timken part number HA590821 or TBHA590821
Tech Specs
- Part Number: HA590821
- Alternate Part Number: TBHA590821
- Height: 4.44 in.
- Width: 5.94 in.
- Length: 5.94 in.
- Unit of Measure: Each
- Bearing Type: Preset, Pre-Greased, Pre-Sealed Hub Unit Assembly
