Topic: 3/4" internal bearings for front hubs?

[DeereRacer]

Does anybody know where I might find some quality high speed bearing with a 3/4" inside diameter that will fit  hubs standard front kart hubs? I found some for a hand cart that would fit but I would not trust them to last very long.

[BIG AL 202]

TRY http://www.mcmaster.com/#, THEY HAVE A LOT OF STUFF, MOSTLY INDUSTRIAL STYLE. HOPE THIS HELPS.

[George Herrin]

You wont find a good quality 3/4 bearing that fits a standard hub 1-3/8  o.d. EC has hubs with the bigger 3/4 bearing inside and the 5/8 outside.

[DeereRacer]

McMaster and grainger don't have anything in that size. So I guess your right George. I thought it might be a good upgrade to 3/4" being mower are twice as heavy as karts that these hubs are made for. If I did the math right they only spin at 1000 rpms at 40mph so a high speed bearing should not be needed. 

[George Herrin]

All I have ever used was a 5/8 hub and never had a failure.

[Gui961]

we have some mower over 450 pounds here with 5/8 spindle. some with a bad desing broke or bend. but build the right way with grade 8 bolt will work fine

[racingjohndeere55]

That's cuz all Georges weight is over the drives I made over 50 front axles with 3/4 grade 8 bolts and never had a failure but had bearing failure.  There's some place this guy (his name escapes me) works has all sorts of goodies for go karts and mowers. I have seen ceramic bearings online for $100.  I still have 3/4 bearings in my tool box if I ever build another one.

[BIG AL 202]

http://tbrwins.com/catsearch/frsearch.mgi?mgiToken=8D40A5G2HNECAG4MAM1 TRY THIS I FOUND THEM UNDER CHASSIE ACCESSORIES, IT SAYS THEY ARE 3/4 HUB BEARINGS. CAN'T HURT TO ASK!

[berthyd]

Applied Industrial Technologies or Kaman should have the proper bearings available. Any other local bearing house would also be able to get them.

Bert

[George Herrin]

EC sells a standard kart front hub that uses a a 3/4 high speed bearing. It looks just like a 5/8 hub but its been made to fit the bigger od good 3/4 bearings.  here is the bearings i cannot find the hub though. http://eccarburetors.com/store/en/chassis/kart-chassis-parts/3-4-front-hub-bearing.html

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George has friends and helped him find the hub.

Drop down in the box is a 3/4" hub.
http://eccarburetors.com/store/en/precision-mower-accessories/wheels-and-hubs/front-hub-w-bearing-3-bolt-pattern.html

[DeereRacer]

Thanks for the bearing ideas. What is the outer diameter of that EC bearing George? Maybe I am weird but it just seems there is a lot of flexing and bending in those standard 5/8" spindles. I have to adjust the camber a few times a year to keep things where I want them but if I ever get front brakes I imagine they would not work with a 3/4" spindle.

[George Herrin]

Dont know the od Will get it though its bigger than the standard 1-3/8. And I for got we also have the hubs with 5/8 on front and 3/4 on rear. And MCP brakes works no matter axle size.