?sealed crankshaft bearings?

Discussion in 'Spare Parts, Tools & Product Developement' started by jaguar, Dec 10, 2011.

  1. jaguar

    jaguar Well-Known Member

    Can anyone tell me which of the bearings listed on this page is correct for the HT Grubee engine?
     

  2. Barnfresh

    Barnfresh Member

  3. Al.Fisherman

    Al.Fisherman Active Member

    The crankshaft bearings use a outside seal (bearing lubed with the fuel mixture), the clutch shaft uses a bearing with seals on both sides (no internal engine lube)
     
  4. CroMagnum

    CroMagnum Member

    You can pry the seals off if you like.
     
  5. Al.Fisherman

    Al.Fisherman Active Member

    Not on the clutch shaft. That bearing needs to be sealed as the lube in the bearing is the only way that it will get lubed. Maybe on the crankshaft but without the inner seal the bearings are lubed with the fuel mix. Some engines have no seal (on the bearing) from factory, and this isn't good, although the crankshaft has a separate seal.
     
  6. jaguar

    jaguar Well-Known Member

    Yeah, I would pry off the inner seal. Idea is to relieve some of the pressure from the non-bearing seals so they don't wear out as fast. Especially since I just increased the crankcase compression ratio.

    If you have the dimensions of the crank seal then send them my way so I'll know which bearing to buy.
     
  7. Al.Fisherman

    Al.Fisherman Active Member

    For anyone wondering the bearing size (6202RS) ...it's 15mm X 35mm X 7mm. Both crankshaft and clutch shafts use the same bearings.
     
  8. CroMagnum

    CroMagnum Member


    Yup, the bearings need the seals and internal grease for the clutch shaft. On the crank bearings (same size) you can pry out the inner seals so the gas/oil mixture can lubricate the bearings. Since I buy the same bearings in bulk for use in both places, I have to remove the seals on the inside of the crank bearings.
     
Loading...