Yamaha WR250R Mega Thread

Discussion in 'Thumpers' started by Sock Monkey, Apr 7, 2008.

  1. henrymartin

    henrymartin Mr. Tourguide

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    The SKF is 17x40mm bearing with double rubber seal. SKF explorer 6203 2RSJEM is what I have in hand. The explorers are okay - lasted two years on my BMW with stock grease. (it sees water, mud, etc). These ones, I'll take apart, wash all the grease out with solvent, and repack them with Maxima waterproof. Lets see how long they last.

    Maybe. Unfortunately, being in a pinch and unable to find quality bearing in the right size (I live near Timken, and they don't have one), I had to get Moose Racing set until I find a better one. Not paying Yami $60 for the Koyo that is shut at 5k miles.
    I found that SKF makes one, but special order in my area. I keep looking and will update once I find a good, EU or USA made product.

    With the SKF explorers, the same part number can be made in Germany or Argentina or...
  2. cjbiker

    cjbiker Nobody's Robot

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    Are you replacing the axle seals as well? If so, where are you getting them? I always wonder when people talk about buying bearings at auto parts stores or bearing houses where they're getting the replacement seals from, or if they are even replacing them.
  3. swimmer

    swimmer armchair asshole

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    That SKF is available from Amazon.

    http://www.amazon.com/SKF-Bearing-Precision-Clearance-Capacity/dp/B0071ARTEM

    Are saying you want to avoid the SKF? I understand about wanting to avoid the no-name chinese bearings but a brand like SKF or Timken, etc... I think the country of origin means a little less in terms of quality.
  4. shep546

    shep546 Been here awhile

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    Halifax, Nova Scotia Canada
    What skid plates are you guys running? How is the richochet?
  5. PYG RYDR

    PYG RYDR Adventure-Dual Sport

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    Southern VA
    Is what I have and works well for me.
  6. AZ TOM

    AZ TOM Long timer

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    Flatland is the best coeverage.
  7. henrymartin

    henrymartin Mr. Tourguide

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    If they are good, I keep the seals. If not, most autoparts stores sell seals as well.

    I am saying SKF over anything else if available. Just my personal experience.

    Timken is even better, IMHO but hard to find for our applications.

    Update: I spent an interesting 30 minutes on the phone with a SKF tech guy who spoke in terms I did not understand (regarding forces, et cetera). The 62/22 (22x50x14mm) is available, but not in Explorer quality. part numbers are 6222-2rs1 or 62222rsj (rs1 is an unknown seal, rsj is a rubber seal pressed in steel cage). Those are industrial bearings, and he ran some numbers. At 200RPM of wheel spin and radial force of 450 lbs, with some axial force, that bearing is rated at 17000 hrs of use before the bearing grooves the cage, with stock lube rated at 40000 hrs. I have not tried or tested this bearing myself.
    The 60/22 (22x44x12mm) is available by special order only and the part number is BB1-4724 . Minimum order and lead times will apply. So I was told.
  8. indypup

    indypup ╭∩╮( º.º )╭∩╮

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    Just got around to editing this video a few days ago. ;) It's just another one of me beating the crap out of my WRR. :huh

    <iframe width="640" height="360" src="http://www.youtube.com/embed/DOxAc2kAn30" frameborder="0" allowfullscreen></iframe>
  9. AZ TOM

    AZ TOM Long timer

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    Brutal:eek1 I'm exhausted:D
  10. Shawnee Bill

    Shawnee Bill Long timer

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    Fun day. But didn't anyone tell you guys it was raining? And flash floods? :lol3


    .
  11. oic0

    oic0 Been here awhile

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    I never thought to use my WR as a boat either, but apparently according to this video it can be done
  12. johninlv

    johninlv Adventurer

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    Oddometer:
    39
    Location:
    Las Vegas NV, Marysville WA

    WR Bearings -
    Fronts: 40x12x17 (seals 40x7x 22 or 23?). Bearings called 6203-2RD same on both sides (30-4004 seals).
    Rears: 50x14x22 and 44x12x22 (seals: 50x30x7 and 30x44x5).
    Bearings called 60/22-2RD-OE6 and62/22-2RD-QE6 (30-5003 and 30-4403 seals)

    SKF:
    Rear1 SKF 62/222RS1 Sealed Deep Groove Ball Bearing 22x50x14mm £11
    Rear2 60/222RS Budget Rubber Sealed Deep Groove Ball Bearing 22x44x12mm £5.60
    Yamaha no.s:
    Fronts: 93306-20348-00 and 93106-23002-00 (seal)
    Rears: 93306-27206-00 £50 and 93306-07202-00 £26 (bearings)
    93106-30001-00 and 93106-30045-00 (seals)


    From an Adv Rider in GB
  13. pfy50

    pfy50 Professional nOOb

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    HM
    I found these
    http://pivotworks.com/ProductInfo.aspx?item_id=1558 Seem inexpensive I sent an email to see where they get their bearings, but no reply yet. They do say they are ABEC3 and come with a lifetime replacement guarantee.
  14. rsteiger

    rsteiger Bob

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    I have the Richochet and my friend is running the Flatland one.

    When I look at the two side by side the Flatland has better protection especially around the water pump. I have made the decision to replace my Richochet with either the Flatland or Moose Racing plastic skid plate.

    Just beware that when you bolt on one of the Al skid plates you are going to wonder what is wrong with your motor the first time you start it up. The Al resonates pretty well. Some of the guys will coat the bottom of the skid plate with spray on bed liner from a can. Based on my experience with my KTM that seems to work pretty well.
  15. theMISSIONARY

    theMISSIONARY hunting and riding!!

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  16. henrymartin

    henrymartin Mr. Tourguide

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    Not sure about pivotworks, as I haven;t used them before.

    I'm not obsessive about bearings, I just want to find something that works for more than a season or two. There are only so many replacements that the hub will handle before something else has to be done.
  17. pfy50

    pfy50 Professional nOOb

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    Hey Henrymartin,
    I'm right there with you. I have a regrease or replace of the swingarm and linkage bearings(wheel beaings are new) coming up in a month or so prior to my summer trip to AK so if you settle on anything let us know as I don't fancy replacing bearings or regreasing any more than absolutely necessary:ricky.
  18. eemsreno

    eemsreno Long timer

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    Out for a ride today.
    [​IMG]
  19. UtahFox

    UtahFox Been here awhile

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    Brrr. I'm ready for Winter to be OVER!!!! Farkles arriving daily and its too cold to do anything about it.
  20. shep546

    shep546 Been here awhile

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    Halifax, Nova Scotia Canada
    Hey guys I just bought a tire that is 120/100/18... the guy at the shop mentioned it's probably too big for my bike... should I return it for a 100/100-18?