The Timken HA590978 is a preset, pre-greased, and pre-sealed hub unit bearing assembly for heavy-duty wheel-end applications. Timken's factory-set preload eliminates the manual adjustment required with conventional tapered roller bearing setups, reducing wheel-end installation time and the variables that lead to improper bearing adjustment. The sealed and pre-greased design keeps contamination out and holds lubrication in from the start. Overall envelope dimensions are 5.32 in. H x 6.41 in. W x 6.51 in. L. Sold by Pro Gear and Transmission. Call us to confirm proper fit for your application.
Features
Preset bearing preload - no manual adjustment required at installation
Pre-greased from the factory - lubrication is ready at wheel-end assembly
Pre-sealed design keeps out contamination throughout service life
Envelope dimensions: 5.32 in. H x 6.41 in. W x 6.51 in. L
Sold as an individual assembly (each)
Genuine Timken part number HA590978
Tech Specs
- Width: 6.41 in.
- Length: 6.51 in.
- Height: 5.32 in.
- Unit of Measure: Each
- Part Number: HA590978
