GrahamS2 Posted July 10, 2017 Share Recently rebuilt my XT SPD's, and was wondering why Shimano never used sealed bearings in the design. Is there a reason for this that anyone knows of? Unless they thought having the average home mechanic trying to locate 24 3mm bearings on the kitchen floor would result in more new pedal sales.. Andrew Barkley 1 Link to comment Share on other sites More sharing options...
Sharkie 2 Posted July 10, 2017 Share Recently rebuilt my XT SPD's, and was wondering why Shimano never used sealed bearings in the design. Is there a reason for this that anyone knows of? Unless they thought having the average home mechanic trying to locate 24 3mm bearings on the kitchen floor would result in more new pedal sales.. Are their wheelsets not the same i.e they do not use sealed bearings? Might be the fact that it should be readily available parts everywhere in the world Link to comment Share on other sites More sharing options...
lechatnoir Posted July 10, 2017 Share Good flipping question!!! even the cheapo VP ones i have serviced had cartridge bearings. Link to comment Share on other sites More sharing options...
IH8MUD Posted July 10, 2017 Share Recently rebuilt my XT SPD's, and was wondering why Shimano never used sealed bearings in the design. Is there a reason for this that anyone knows of? Unless they thought having the average home mechanic trying to locate 24 3mm bearings on the kitchen floor would result in more new pedal sales.. SO that you can rebuild them , very easily . . instead of throwing them away. Or have to buy funny bearing pullers things to service them. Or have to take it the LBS and always wonder if they did the job properly Edited July 10, 2017 by IH8MUD GrahamS2, Sepia, quintonb and 1 other 4 Link to comment Share on other sites More sharing options...
BaGearA Posted July 10, 2017 Share Unreal reliability compared to sealed bearings ? I mean you don't even have to service them and they'll go 1000's upon 1000's km's without missing a beat , don't service a crank brothers pedals for 1 year and you'll know about it. Still prefer sealed bearings for wheels tho Bos 1 Link to comment Share on other sites More sharing options...
GrahamS2 Posted July 10, 2017 Share I guess the loose bearing/cone design allows for small adjustments to minimise play on the shaft - something that a sealed race wouldn't allow for. Open bearings are also more efficient than sealed, but are more prone to lubricant contamination. Either way it's a clever design and easy enough to service. The engineer in me just wondered if it couldn't be made better. Link to comment Share on other sites More sharing options...
Tristand Posted July 10, 2017 Share Shimano just has a cup-and-cone fetish.They use them for everything. Edited July 10, 2017 by Tristand Amberdrake 1 Link to comment Share on other sites More sharing options...
ichnusa Posted July 10, 2017 Share Cup and cone designs are able to withstand lateral (side-to-side) forces much better than cartridge bearings which are designed to only take vertical load... BaGearA, Griffin, Kalahari Vegmot and 2 others 5 Link to comment Share on other sites More sharing options...
Kalahari Vegmot Posted July 10, 2017 Share SO that you can rebuild them , very easily . . instead of throwing them away. Or have to buy funny bearing pullers things to service them. Or have to take it the LBS and always wonder if they did the job properly Very easy? Yip... However, I always seem to lose a ball bearing... I've now got a pedal that I keep just for spare bearings... Link to comment Share on other sites More sharing options...
Hairy Posted July 10, 2017 Share PLEASE CLOSE THIS THREAD, CLEARLY A SPAMMER EVERYONE KNOWS YOU DO NOT SERVICE SHIMANO PEDALS, AS THEY NEVER DIE, REALLY THEY NEVER DIE, AND JUST KEEP ROCKING ON FOR YEARS OF HIGH MILEAGE AND ABUSE. CASE CLOSED, CUP AND CONES WORK FOR SPD'S AND SPD'S WORK FOR ME! It also allows you to pretension the bearings if there is a little slop over time. Edited July 10, 2017 by Hairy Rocket-Boy, Pieter1, Wannabe and 5 others 8 Link to comment Share on other sites More sharing options...
droo Posted July 10, 2017 Share Very easy? Yip... However, I always seem to lose a ball bearing... I've now got a pedal that I keep just for spare bearings... Magnetic parts tray ftw. PLEASE CLOSE THIS THREAD, CLEARLY A SPAMMER EVERYONE KNOWS YOU DO NOT SERVICE SHIMANO PEDALS, AS THEY NEVER DIE, REALLY THEY NEVER DIE, AND JUST KEEP ROCKING ON FOR YEARS OF HIGH MILEAGE AND ABUSE. CASE CLOSED, CUP AND CONES WORK FOR SPD'S AND SPD'S WORK FOR ME! It also allows you to pretension the bearings if there is a little slop over time. They do occasionally click though. Which can be annoying. Mojoman and Kalahari Vegmot 2 Link to comment Share on other sites More sharing options...
Mojoman Posted July 10, 2017 Share Magnetic parts tray ftw. They do occasionally click though. Which can be annoying.Best R20 I ever spent was a magnet on the end of a telescopic car aerial. Used that puppy for so many jobs including bike services on wheel bearings and pedal bearings.... Link to comment Share on other sites More sharing options...
Kalahari Vegmot Posted July 10, 2017 Share Magnetic parts tray ftw. They do occasionally click though. Which can be annoying.Been considering a magnetic garage floor... Wannabe 1 Link to comment Share on other sites More sharing options...
intern Posted July 10, 2017 Share PLEASE CLOSE THIS THREAD, CLEARLY A SPAMMER EVERYONE KNOWS YOU DO NOT SERVICE SHIMANO PEDALS, AS THEY NEVER DIE, REALLY THEY NEVER DIE, AND JUST KEEP ROCKING ON FOR YEARS OF HIGH MILEAGE AND ABUSE. CASE CLOSED, CUP AND CONES WORK FOR SPD'S AND SPD'S WORK FOR ME! It also allows you to pretension the bearings if there is a little slop over time.I've still got the XTR pedals I bought in 2007/2008. Never been opened. Link to comment Share on other sites More sharing options...
Hairy Posted July 11, 2017 Share Magnetic parts tray ftw. They do occasionally click though. Which can be annoying.Thankfully I have never experienced the clicking noise.Also only ever used the base 520 models......could it be the heavier msterials used are just so much more reliable? Wannabe 1 Link to comment Share on other sites More sharing options...
GrahamS2 Posted July 11, 2017 Share I've still got the XTR pedals I bought in 2007/2008. Never been opened.I should probably have mentioned that the set I rebuilt on the weekend has been my only set of pedals since 2007, and that was only time I've ever opened them. Fresh grease made a nice difference though Edited July 11, 2017 by GrahamS2 Hairy 1 Link to comment Share on other sites More sharing options...
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