Timken SP500301 already bad

[swathdiver]

How tight did you go with the axle nut? Spec is 188lb./ft.

I feel like over-torquing is a good way to destroy the bearings.

177

 

[Dustin Jackson]

Pretty sure it’s been proven that the hub is a solid piece between both inner and outer mounting surfaces so tightening the axle nut doesn’t affect the bearing, just secures the front drive axle to the hub. Still, best to go by the book just in case.

 

[Jamminator]

My GM OE hubs are Mexican. They are 2024 vintage.

Interesting - the ones delivered to me were Korea, it does not surprise me GM changes sources (for probably a variety of reasons). That makes it even more of a hit-or-miss.

How tight did you go with the axle nut? Spec is 188lb./ft.

I feel like over-torquing is a good way to destroy the bearings.

I believe the hub is solid on these, it's not like some FWD cars where the hub can be removed from the bearing. Once the hub is pressed through the bearing assembly they use a large press that forges and mushrooms the end of the hub spindle over against the backside bearing race to keep it retained. You would need multiple tons of torque to deform/compress it any further - and even then I believe there's a compression sleeve between the two bearings to set the right amount of preload.

Pretty sure it’s been proven that the hub is a solid piece between both inner and outer mounting surfaces so tightening the axle nut doesn’t affect the bearing, just secures the front drive axle to the hub. Still, best to go by the book just in case.

Just checked an old one for sanity and this is true. It's one piece and the backside is mushroomed/forged against the bearing to keep it in place.

 

[Dustin Jackson]

@Jamminator Helps my sanity too, thanks

 

[mikez71]

Yep, just got a couple Timkins made in Korea. Hoping they're good..

 

[Dustin Jackson]

Yep, just got a couple Timkins made in Korea. Hoping they're good..

@mikez71 One of mine was made in Korea and honestly it seemed to be better built than the USA one. BOTH are still running strong for what it’s worth.

 

[Charlie207]

177

Whoopsie... thanks for correcting my mistake.