Which 5700 pedal bearings 3/32 inch

nigelgos
nigelgos Posts: 128
edited January 2017 in Workshop
For 105 5700 pedal bearings (I think all Shimano pedals use the same) I think I need 3/32 inch bearings. Which ones do I go for? I'm looking here (http://simplybearings.co.uk/shop/index. ... =4747_4748) but don't know what the different categories/grades are for.

Comments

  • ugo.santalucia
    ugo.santalucia Posts: 28,312
    AFAIK pedals have a needle bearing, nothing to do with what you are pointing at. Moreover, changing a needle bearing is probably near impossible with conventional tools.

    I always found Shimano pedals disposable... once the bearings are gone, there is nothing you can do
    left the forum March 2023
  • nigelgos
    nigelgos Posts: 128
    They are cup and cone type... https://youtu.be/8h7XtupequY I just don't know what type (grade) of bearing I'll need.
  • ugo.santalucia
    ugo.santalucia Posts: 28,312
    Check if you can open them first. IME they are so tight that the plastic nut you are supposed to turn with the tool tends to break before it comes undone...
    That tool was in fact a total waste of money...
    left the forum March 2023
  • nigelgos
    nigelgos Posts: 128
    ugo.santalucia wrote:
    Check if you can open them first. IME they are so tight that the plastic nut you are supposed to turn with the tool tends to break before it comes undone...
    That tool was in fact a total waste of money...

    I've got one in the post so we'll see.

    I might just order a pair from PX, they are the cheapest atm and have another 10% off too.
  • crankycrank
    crankycrank Posts: 1,830
    I'm no expert but from doing a little research you would probably do best with the 440 stainless balls. The stainless resists corrosion and they are the hardest version of stainless this supplier carries. Balls are also graded for their roundness with the lower the number meaning higher tolerances. Grade 100 is fine for pedals and 25 is popular for wheel bearings. Some say you can feel a difference with 10 or even 5 grade for wheel bearings but is overkill for pedals. You could actually use most of the bearing materials listed as long as they have a high enough hardness rating and be just fine but bearings are so cheap why not splurge. There are plenty of bearing tutorials available through a Google search if you don't mind spending an hour or so of migraine inducing research or just get the 440 SS and enjoy the ride. Any more knowledgeable types are welcome to correct me. Unless you're sure you need new bearings just unscrew the cartridge, adjust the play if needed, flush off the old grease in some solvent while leaving the spindle cartridge assembled, clean out the pedal body, fill the body about 1/3 with grease and install the cleaned cartridge. The grease will be forced into the bearings when you screw the spindle cartridge in.
  • keef66
    keef66 Posts: 13,123
    I've never had the patience to try replacing the bearings in a pedal. I do occasionally take them off the spindle, wipe them down and fill with fresh grease before reassembly. This forces any residual dirty grease out in a very satisfying way. If ever I wear out the bearings I figure the rest of the pedal will be toast too, so I'll want some shiny new ones...

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