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  • Bearing, bearings, bearings, Who thinks they know the score?
  • ChunkyMTB
    Free Member

    My bushings are working superbly as usual 8)

    Free Member

    **** OFF! Please?

    Free Member


    Free Member

    @chunkymtb. Yes, my Nicolai uses bushings – just work…

    Free Member

    Bushings here too. Kaesae proof.

    Free Member

    The five main factors that contribute to bearing failure in MTB applications.

    1)Bearing material.
    2) Bearing design, caged or full comp also the seal design and interface between the seal and races.
    3) Bearing greasing, how much and what kind.
    4) Bearing tolerances.
    5) Installation and maintenance of the bearings.

    Day 1 again

    Day 2

    1)Bearing material
    As you can see the budget bearing being made of a much lesser quality material is not holding up very well.
    The performance bearings are doing a lot better, the enduro in this test is doing a little bit better at this stage than the SKF’s, it is however an outdoor specific bearing. The SKF and most other performance bearings have a lot better seals than the enduro bearings, which is why a favour them. The seals make it much harder for contaminants to get into the bearing.
    If you’re bearings rust on the inside you will get much quicker ware and there will also be a higher risk of them seizing.

    You will also spend far too much time replacing the bearings and get no performance gain.
    If the bearing collapses which is what happens a lot with the cheaper bearings, a good example of this is the JNK bearings that Specialized run. You will have a much harder job replacing the bearings, me I could do without all the hassle.

    Seals as a sub category of bearing design.
    Next I want to discuss seals and the outer also inner race interface between the two.

    The photo shows a budget bearing on the left an Enduro in the middle and an SKF on the right.

    If you look closely you’ll see that there is a groove cut into the SKF bearings inner bore race for the seal to fit into. You will also see that the budget and enduro seals are almost identical, however the SKF seal is much thicker and has a superior design.
    The SKF seal on the inner race interface has better quality rubber and is also ribbed, this helps it to keep the fit as tight as possible.

    The SKF seal will greatly reduce the amount of water and other contaminants that get into the bearing.

    Let’s be hearing you then, you know you can’t resist!

    Free Member

    Bushing for the win 8)

    Free Member

    You like Honey then!

    Free Member

    Let’s take a look inside some bearings and see what we see, Spazmastic yeah!!!

    The bearing top left is an NTN it has seized as a result of bearing material (rust) building up, put simply not enough grease to weather proof it.

    bearing at the top in the middle is an NBK same thing rust as a result of moisture entering the bearing and erosion occurring.

    bearing on the top right is an enduro max as you can see the actual balls have rusted and caused this bearing to seize as well.

    bearing on the bottom left is an enduro bearing, the problem this time is hardening of the actual grease at the end of its life expectancy and dirt build up.

    Bottom middle bearing is another enduro bearing that has seized as a result of the grease coming to the end of its usefulness and also dirt building up.

    Last bearing is one of specialized JNK brand and has bad rust and has seized as a result of this.

    These are only some of the causes of bearing failure, they do show clearly that rust is a major factor.

    Bearing material and design also greasing are the best ways to deal with this and stop it in its tracks.

    Full Member

    Can some one stop this shit please.

    Full Member

    Kaesae, are you related to Dylan Turvey off bikemagic fame?

    Free Member

    Im sorry but there is no way in the world this is not a wind-up.

    Whoever invented kaesae is a genius for sure, but it is time for some new material…

    Free Member

    Yup – what Dancake said

    Someone has some serious time on they're hands inventing such a lunatic!

    priceless, absolutely priceless!

    Free Member

    As a hardtail rider I for one am hoping for an in depth report on saddle cover material, carried out with equal panache and vim.

    Free Member


    not just kaesae, the rest of you morons who have the time to bother posting to this moronic shyte

    please stop

    Free Member

    Kaesae – forget the bearings now. Nobody cares. When we need new bearings we'll just buy some (not from you, obviously).

    Please feel free to start an amusing thread on a different topic though.

Viewing 17 posts - 321 through 337 (of 337 total)

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