Results 1 to 17 of 17
  1. #1
    mtbr member
    Reputation:
    Join Date
    Mar 2011
    Posts
    737

    Hub bearing replacement, go with ceramic?

    Need to replace my rear wheel hub bearings again. It's a 6903 LBLU cage separated bearing. Maybe I should go with a ABI Enduro-MAX as it's cageless and should have more bearings and hopefully withstand more force?

    I'm getting 3 months out of these before they are shot. Grindy and too much lateral play so I need something better.
    Everyone is entitled to my opinion.

  2. #2
    Magically Delicious
    Reputation: Cleared2land's Avatar
    Join Date
    Aug 2012
    Posts
    7,571
    Max bearings are not intended for wheel bearings. They are specifically designed for pivot bearing applications.

    If your interest is Enduro bearings, and you're thinkin' cageless is what you want, then you should be considering the ABEC 5 bearings

    Specifically what is the cause of your failures? Contamination? Water?

    Are you servicing these? Did you perform the last bearing replacement?
    A bad day of cycling is better than a good day at work

    Work Truck - Dassault Falcon 7X

  3. #3
    mtbr member
    Reputation:
    Join Date
    Mar 2011
    Posts
    737
    I am servicing them. As for what's wearing them out I really don't know. They were adequately greased and didn't see much contamination except for a bunch of metal flakes. Maybe I'm just too hard on the bike?
    Everyone is entitled to my opinion.

  4. #4
    Barely in control
    Reputation: Schulze's Avatar
    Join Date
    Feb 2007
    Posts
    2,100
    Interested in the details.

  5. #5
    mtbr member
    Reputation: LyNx's Avatar
    Join Date
    Oct 2004
    Posts
    23,556
    As C2L said, full compliment /maxx bearings are intended for small movement, loaded applications, i.e. most suspension pivots, you want raced bearings for things that spin.

    Where di you get that your wheel uses this bearing, is this what you found when you first serviced them new or someone told you that? Ask as they use 2 different types of seals with two different colours, and someone may have assumed they were this type of bearing, when in fact they maybe should be Angular contact bearings, which also use 2 different colour seals to let you know which side is which and which require a specific pre-load, any more will cause them to fail prematurely.

    As to ceramic vs SS? I tried ceramics in my BB once, the didn't last any better than SS ones, but cost over 3 times the price, now just use SS.
    One day your life will flash before your eyes, will it be worth watching??

  6. #6
    Wanna ride bikes?
    Reputation: *OneSpeed*'s Avatar
    Join Date
    Oct 2013
    Posts
    5,491
    +1 ceramic aren't worth the money
    +1 Abec 5 bearings and/or angular contact. That should solve your problem.
    Rigid SS 29er
    SS 29+
    Fat Lefty
    SS cyclocross
    Full Sus 29er (Yuck)

    Stop asking how much it weighs and just go ride it.

  7. #7
    mtbr member
    Reputation:
    Join Date
    Mar 2011
    Posts
    737
    Quote Originally Posted by LyNx View Post
    As C2L said, full compliment /maxx bearings are intended for small movement, loaded applications, i.e. most suspension pivots, you want raced bearings for things that spin.

    Where di you get that your wheel uses this bearing, is this what you found when you first serviced them new or someone told you that? Ask as they use 2 different types of seals with two different colours, and someone may have assumed they were this type of bearing, when in fact they maybe should be Angular contact bearings, which also use 2 different colour seals to let you know which side is which and which require a specific pre-load, any more will cause them to fail prematurely.

    As to ceramic vs SS? I tried ceramics in my BB once, the didn't last any better than SS ones, but cost over 3 times the price, now just use SS.

    Mech at bike store said they have two Enduro max 6903 bearings and it should work. Said they were better than the regular Enduro bearing. They also have ABI Enduro 6903 https://www.amazon.com/gp/product/B001GSMM5G/ so will that work?


    Last time we replaced the bearings with XERO 6903-LBLU which is what they originally came with. Orange seal one side and black on the other. Orange was on the outside but I probably did not set the proper preload which is why they failed this time after 3 months.

    I may just buy the ABI Enduro 6903 bearings for $20 if it will work so I can get in a weekend ride.
    Everyone is entitled to my opinion.

  8. #8
    Magically Delicious
    Reputation: Cleared2land's Avatar
    Join Date
    Aug 2012
    Posts
    7,571
    Quote Originally Posted by ghoti View Post
    Mech at bike store said they have two Enduro max 6903 bearings and it should work. Said they were better than the regular Enduro bearing.


    t I probably did not set the proper preload which is why they failed this time after 3 months.
    Your mechanic is wrong in trying to sell you MAX bearings for a hub application. They're not for hubs. That's easily confirmed by taking a look at the Enduro web site.

    What hubs do you have that requires a bearing pre-load for these bearings?

    Ensure that you apply an appropriate amount of grease on the end caps that protect the bearings from external contaminates. I suspect that's your problem.
    Last edited by Cleared2land; 05-06-2017 at 01:02 PM.
    A bad day of cycling is better than a good day at work

    Work Truck - Dassault Falcon 7X

  9. #9
    mtbr member
    Reputation:
    Join Date
    Mar 2011
    Posts
    737
    Here's a pic of the axle. I don't know if that inner black nut should be tightened to a certain specification. I just cinched it down with a crescent wrench but perhaps that was too tight and caused premature failure?
    Hub bearing replacement, go with ceramic?-axle.jpg
    Everyone is entitled to my opinion.

  10. #10
    mtbr member
    Reputation: LyNx's Avatar
    Join Date
    Oct 2004
    Posts
    23,556
    Yeah, um, going to guess that's your problem. All you need to do is tighten that down just snug until there's no play, then tighten down the end cap while using a wrench to keep the pre-load nut from tightening down further (just like if it were a cup n cone setup) that's why it and the end cap have wrench flats

    Quote Originally Posted by ghoti View Post
    Here's a pic of the axle. I don't know if that inner black nut should be tightened to a certain specification. I just cinched it down with a crescent wrench but perhaps that was too tight and caused premature failure?
    Click image for larger version. 

Name:	axle.jpg 
Views:	25 
Size:	115.2 KB 
ID:	1135781
    One day your life will flash before your eyes, will it be worth watching??

  11. #11
    Magically Delicious
    Reputation: Cleared2land's Avatar
    Join Date
    Aug 2012
    Posts
    7,571
    I think you need to perform some service on that poor freehub. That's in bad need of some TLC.
    A bad day of cycling is better than a good day at work

    Work Truck - Dassault Falcon 7X

  12. #12
    mtbr member
    Reputation:
    Join Date
    Mar 2011
    Posts
    737
    Yeah my buddy changed the cassette and thought it would be a good idea to put grease on the freehub. Just acts as a good dirt magnet tho.
    Everyone is entitled to my opinion.

  13. #13
    Magically Delicious
    Reputation: Cleared2land's Avatar
    Join Date
    Aug 2012
    Posts
    7,571
    What type of grease was put on there?
    A bad day of cycling is better than a good day at work

    Work Truck - Dassault Falcon 7X

  14. #14
    mtbr member
    Reputation: LarryFahn's Avatar
    Join Date
    Jul 2005
    Posts
    2,100
    What hub is this?
    Hubbard Bike Club

  15. #15
    mtbr member
    Reputation:
    Join Date
    Mar 2011
    Posts
    737
    Quote Originally Posted by Cleared2land View Post
    What type of grease was put on there?
    Mobil or Valvoline synthetic grease. Probably not ideal to use and perhaps bit thick but it's all I had on hand.


    Quote Originally Posted by LarryFahn View Post
    What hub is this?
    No idea. Some cheapo oem wheelset.
    Everyone is entitled to my opinion.

  16. #16
    Magically Delicious
    Reputation: Cleared2land's Avatar
    Join Date
    Aug 2012
    Posts
    7,571
    Way, WAY too thick! Not even close to what should be in your freehub! Freehub grease is very thin, but many prefer freehub oil which very light oil.

    My suggestion is to learn some standard practices and how to properly maintain your ride.
    A bad day of cycling is better than a good day at work

    Work Truck - Dassault Falcon 7X

  17. #17
    mtbr member
    Reputation:
    Join Date
    Mar 2011
    Posts
    737
    Quote Originally Posted by Cleared2land View Post
    Way, WAY too thick! Not even close to what should be in your freehub! Freehub grease is very thin, but many prefer freehub oil which very light oil.

    My suggestion is to learn some standard practices and how to properly maintain your ride.
    That grease was only put on the pawls to quiet them down, not packed into the freehub body itself. Sure the thicker grease might inhibit the pawl engagement a bit but it also quieted it down so it doesn't sound like a swarm of angry bees.
    Everyone is entitled to my opinion.

Similar Threads

  1. Wobbly wheel after ceramic bearing swap
    By ssrmr2 in forum Wheels and Tires
    Replies: 0
    Last Post: 10-08-2016, 12:23 PM
  2. Ceramic Bearing recommendation for Hubs?
    By BHRuss in forum Wheels and Tires
    Replies: 7
    Last Post: 01-06-2016, 09:51 PM
  3. Ceramic Bearing Pulleys XX1-MTB
    By nikotin in forum Drivetrain - shifters, derailleurs, cranks
    Replies: 0
    Last Post: 06-10-2015, 08:04 AM
  4. Ceramic bearing upgrade ?
    By C.M.S in forum Wheels and Tires
    Replies: 2
    Last Post: 07-30-2014, 08:51 AM
  5. Ceramic bearing Q
    By crazyjeys in forum Wheels and Tires
    Replies: 40
    Last Post: 04-01-2011, 02:07 AM

Members who have read this thread: 10

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  

THE SITE

ABOUT MTBR

VISIT US AT

© Copyright 2019 VerticalScope Inc. All rights reserved.