Trailer bearing hub kit

[FishingRebel]

I am going to purchase a new bearing hub kit for my trailer.  First, I need to figure out the spindle diameter size.  The current one on the trailer looks to be 1 1/16 with both bearings being the same size as my trailer is only rated for  max 1,250 lbs.   

However, since my boat trailer is only rated for 1,250 lbs, can 1 1/16 be correct for the bearing size instead of 1 inch?  From what I have been looking at the stores 1 inch is for 1,250 lbs and 1 1/16 is for 1, 350 max lbs. 

If  I bought the  bearing hub kit for 1 inch, would it fit if the trailer is for 1 1/16?

 

 

 

 

[sunniewally]

check the number on the bearing or measure the shaft.

 

[Walleyehooker]

You need to measure and get the right size. If it doesn't fit snug on the spindle you will damage the spindle or have other problems.

[RebelSS]

2 hours ago, sunniewally said:

check the number on the bearing or measure the shaft.

 

The only way I'd even consider doing it...match the bearing # or cross-ref it. Don't even try to go by trailer weight; means nothing. Bearing must be exact size or you needn't worry about getting very far with it.

[smurfy]

I just changed bearings in both my boat and snowmobile trailer. I took a bearing of each trailer and brought it to the auto parts store. they can measure it with a caliper!

the one thing I got educated on is most these bearing kits are a generic version. if you have an older trailer like mine you may need to get a different size grease seal on the back side. in both my older trailers my spindles had a rise in the shaft and I needed to go to a larger inside diameter seal then what came with the kit.

[EBass]

I have a trailer that uses 1 1/16" and 1" will not work.  It looks like it would fit, but nope.  I get the hub/bearing kit at Northern Tool and it comes with a couple of sizes for the rear seal in the kit. It's been working for me. My trailer is old like smurfy was talking about and my rear seal is larger too. 

 

[smurfy]

yea if I ever do this again wont be going to the local NAPA,  nothing against them, but when I get parts I want the correct stuff. rednecks trailer sales did me good. northern tool now that ypu say it would be another good option!

[RebelSS]

Another suggestion......get a good USA made bearing like a Timken, etc. Those Chinese ones are REALLY junk. Not worth wasting your time installing. Let's face it, nothing ruins your day faster than a seized bearing!