Campagnolo UT bearing replacement

[Mezky]

I got a second hand bike with a Veloce Ultra Torque crank. There is some noise when pedaling so I removed the crank and found that one of the bearings feels gritty. I cleaned and applied some grease but I would like to replace it. I know that Campagnolo uses a 6805N (6mm) but the ones in this bike are 6805 RS (7mm). There is no play in the cranks with these bearings and rotation is smooth. Also the thrust washer is missing. Maybe to make space for the extra 1 mm in those bearings. Do you recommend to replace with the same model as the other is good? Or use the OEM from Campagnolo.

[m_sasso]

The 6805RS (7mm) can be obtained from almost any bearing house, the 6805N (6mm) limited sources, Campagnolo. Yes, likely the wavy/thrust washer removed to allow the use of the wider nonstandard bearings. Can use either, the wider bearing likely has a higher load rating and a rubber seal (RS), use the wavy washer if you chose to use the 6mm Campagnolo sourced bearing.

[Mezky]

Originally Posted by m_sasso

The 6805RS (7mm) can be obtained from almost any bearing house, the 6805N (6mm) limited sources, Campagnolo. Yes, likely the wavy/thrust washer removed to allow the use of the wider nonstandard bearings. Can use either, the wider bearing likely has a higher load rating and a rubber seal (RS), use the wavy washer if you chose to use the 6mm Campagnolo sourced bearing.

So, using the 6805 (7mm) doesn't cause any problem. It is easier to find a better quality bearing (SKF, NTN, NSK) in 6805 than the 6805N.

Thank you.

[oldpotatoe]

Originally Posted by Mezky

So, using the 6805 (7mm) doesn't cause any problem. It is easier to find a better quality bearing (SKF, NTN, NSK) in 6805 than the 6805N.

Thank you.

DON'T recommend using the 7mm bearing. No clip on the RH spindle above the bearing, no wavy washer, etc..finding good quality 6805N that aren't either OE Campag or junk isn't hard. I have them..BUT even OE bearings are only about $20 per, with seals.

https://www.amazon.com/Campagnolo-Bo...55595513&psc=1

BUT the 'system' was designed for the 'N' bearing..use that, IMHO. With a slightly too big BB shell or any other issues,the 'best' you might see if bearings wear out prematurely.

[m_sasso]

Originally Posted by Mezky

So, using the 6805 (7mm) doesn't cause any problem. It is easier to find a better quality bearing (SKF, NTN, NSK) in 6805 than the 6805N.

Thank you.

That is correct, have not tried it on my own equipment as I am still using my original CULT's.

Hambini says it is OK, if you want more speed, so must be "true".

[oldpotatoe]

Originally Posted by m_sasso

That is correct, have not tried it on my own equipment as I am still using my original CULT's.

Hambini says it is OK, if you want more speed, so must be "true".

Had a guy come in once..when he tightened his crank bolt, the cranks wouldn't turn..no wavy washer..just a BB shell that was about 70mm(english threading).
Yes, the OP can get it to 'work', by leaving small parts out BUT his rational was not being able to find decent bearings and that isn't the case. NOT hard to use the proper parts..for anything...

hambini..I'd automatically do the opposite of what that DF says..

[Plum Hill]

Why do people think they know more than the engineers that designed integrated systems?
I’ve seen first hand what happens when the shop mechanic doesn’t install the clip and wavy washer. Had it been my CF frame that was damaged, he’d be permanently wearing it.
Be a man: read (and follow) the instructions.

[m_sasso]

Originally Posted by Plum Hill

Why do people think they know more than the engineers that designed integrated systems?
I’ve seen first hand what happens when the shop mechanic doesn’t install the clip and wavy washer. Had it been my CF frame that was damaged, he’d be permanently wearing it.
Be a man: read (and follow) the instructions.

Because bridges do fall down and innovation can be risky! I'd say ask Graeme Obree?

[Mezky]

Thanks for the replies. I will replace them with the original ones. Also need to order the wavy washer. The clip is on the cups.

By the way, no one is trying to change the design. Only asking about experience of using slightly different parts as I got the bike with those bearings. You don’t need to be a man to read instructions.

[oldpotatoe]

Originally Posted by Mezky

Thanks for the replies. I will replace them with the original ones. Also need to order the wavy washer. The clip is on the cups.

By the way, no one is trying to change the design. Only asking about experience of using slightly different parts as I got the bike with those bearings. You don’t need to be a man to read instructions.

You'll probably need the clip that goes onto the right hand spindle too. NOT the clip in the cup or wavy washer but this. I have those, BTW...

https://www.ebay.com/itm/12316468747...Cclp%3A2334524

[Ronsonic]

Originally Posted by m_sasso

Because bridges do fall down and innovation can be risky! I'd say ask Graeme Obree?

Graeme created his own, new, integrated system. One that was coherent, reliable and suited to his purposes. I wouldn't try to improvise if called upon to work on one of his bikes, either.

[weiwentg]

Originally Posted by oldpotatoe

...
Hambini..i'd automatically do the opposite of what that df [Hambini] says..

+1, fwiw

[Tz779]

Originally Posted by oldpotatoe

hambini..I'd automatically do the opposite of what that DF says..

I like Hambini….

[oldpotatoe]

Originally Posted by Tz779

I like Hambini….

Not trying to turn this into a hambini-fest and I'll bet he has some good technical info but his rude, profane, misogynistic, sexist BS..no thanks.

There are plenty of good sources for reliable technical info without his 'attitude' that has nothing to do with bikes.

[Alan]

Just had to replace UT cups and bearings due to "hammering" sounds. Anything I can do to extend life other than regreasing frequently?

I was used to sq taper BBs that lasted a long time. The decent Campy BBs lasted a long time.

Alan