I believe the shaft is supported by the needle bearings correct.
F350 front axle needle bearings.
4 6 out of 5 stars.
Ventures truck parts shows how to save money by replacing the needle bearing instead of replacing the whole wheel hub assembly.
This bearing commonly fails t.
I was wondering what is involved in taking those out and replacing them it looks like they are held in place with some type of spanner nut.
Pulled the passenger side esof hub off to see if i could free up the dial.
So be sure to use a high quality wheel bearing grease on that forcing it into all.
These units are ready to go with the exception of the inner needle bearing is not greased.
The bearings that support the wheel ends are heavy duty and able to handle most any load you can put in or tow with your ford super duty.
Ford 1998 2004 f250 f350 superduty dana 50 60 front axle knuckle tube seal kit.
Buy timken 515020 axle bearing and hub assembly.
Putting it back on i see the end of the axle shaft is wobbling around.
But in addition to the primary tapered roller bearing in the hub there is also a needle bearing that supports the axle shaft on front driven wheels in the f 250 and several other f series trucks.