Sealed vs Shielded cartridge bearings for Speedplay Zero
02-10-11, 08:47 AM
#1
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Sealed vs Shielded cartridge bearings for Speedplay Zero
I want to replace my Speedplay Zero cartridge bearings with Ceramic Hybrid ones.
I believe Speedplay uses shielded steel cartridge bearings. This allows lubing
w/grease via pedal grease port; grease can pass thru 2 race bearings so as to allow lubing pedal's needle bearing.
Boca Bearing has a hybrid ceramic rubber sealed set and shielded set. Both are maint. free. The "shields" set has non contact frictionless seals behind the shields.
According to Speedplay if install ceramic bearings like Boca Bearing's shielded or sealed, it will this prevent/block grease from passing thru to pedal's needle bearings.
Can I simply remove the rubber seals or shields to allow for greasing them along with Speedplay pedal needle bearing via pedal grease port.
(Enduro makes a sealed ceramic bearing for only one of the cartridges)
https://www.bocabearings.com/bearing-...r-pedal-pedals
https://www.bocabearings.com/productd...SubGroupID=113
I believe Speedplay uses shielded steel cartridge bearings. This allows lubing
w/grease via pedal grease port; grease can pass thru 2 race bearings so as to allow lubing pedal's needle bearing.
Boca Bearing has a hybrid ceramic rubber sealed set and shielded set. Both are maint. free. The "shields" set has non contact frictionless seals behind the shields.
According to Speedplay if install ceramic bearings like Boca Bearing's shielded or sealed, it will this prevent/block grease from passing thru to pedal's needle bearings.
Can I simply remove the rubber seals or shields to allow for greasing them along with Speedplay pedal needle bearing via pedal grease port.
(Enduro makes a sealed ceramic bearing for only one of the cartridges)
https://www.bocabearings.com/bearing-...r-pedal-pedals
https://www.bocabearings.com/productd...SubGroupID=113
Last edited by bike_boy; 02-16-11 at 11:06 PM.
02-10-11, 10:58 AM
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Lula Mae = 15 lbs.
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I wonder if the Speedplay original bearings are unsealed/unshielded?
Also, note that Speedplay's internal torx screw for end of spindle blocks any grease from going down center via race bearing holes.
Also, note that Speedplay's internal torx screw for end of spindle blocks any grease from going down center via race bearing holes.
Last edited by bike_boy; 02-16-11 at 11:08 PM.
02-10-11, 11:10 AM
#3
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grease injection pushes out the contaminated grease,
contact seals add some resistance
both to grease injection particularly on inside face pushing thru it ,
and a trifle rotationally.
a bearing placed so as shielded on the inside, and a contact seal on the outside,
would be Ideal, i'd suppose. but that's for weather resistance..
Given, you seek slight rotational resistance reduction with ceramic balls,
seal drag would add some back again.
contact seals add some resistance
both to grease injection particularly on inside face pushing thru it ,
and a trifle rotationally.
a bearing placed so as shielded on the inside, and a contact seal on the outside,
would be Ideal, i'd suppose. but that's for weather resistance..
Given, you seek slight rotational resistance reduction with ceramic balls,
seal drag would add some back again.
Last edited by fietsbob; 02-10-11 at 11:20 AM.
02-10-11, 10:46 PM
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Lula Mae = 15 lbs.
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Just another attempt at shaving bike weight.
Last edited by bike_boy; 02-16-11 at 11:09 PM.
02-10-11, 10:56 PM
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behind the shield. Guess I should have gotten that one; though the set is a gram
heavier than rubber seal set.
Last edited by bike_boy; 02-11-11 at 08:55 AM.
02-11-11, 11:18 AM
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02-11-11, 01:16 PM
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02-11-11, 08:23 PM
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I am the unofficial mechanic for my group of old fart bike riders. I like working on them because they are simple and efficient. I wish they wouldn't mess with the standards just to make changes for change (and money's) sake.
Because of my hobby I got to follow Amy Xu on the RAAM as her mechanic.
02-16-11, 11:13 PM
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So, if I pull rubber seals off ceramic bearings, would it be okay to install as replacements in Speedplay pedals?
