Questions tagged [hollowtech]

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6 votes
3 answers
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What is the role of the "safety plate" on a Shimano Hollowtech II crank?

The left crankarm of an HollowTech II crank has a little part called "safety plate" (number 4 on the drawing below). What is exactly its role, and what kind of 'safety' does it offer given ...
Rеnаud's user avatar
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6 votes
3 answers
741 views

Broken plastic HollowTech II BB spacers, why?

Yesterday I was installing a BB-MT501 HollowTech II bottom bracket into my ~2006 Trek 520 frame. This frame has a 68mm BB shell. I was following the directions on Shimano's website: https://si.shimano....
Dan's user avatar
  • 193
2 votes
1 answer
1k views

What replacement for Shimano 105 SM-FC5600 Bottom Bracket

I have a Specialized Tarmac Comp bike from 2010. It has a Shimano 105 SM-FC5600 Bottom Bracket that I want to replace. It makes clicking sounds, after 50.000km of use. I think I can use any shimano ...
Christine's user avatar
  • 364
2 votes
2 answers
2k views

Shims between Crank and Chain Ring

I should like to move the chainring on my single speed bike a little further outward (fig 1). The reason is to have enough clearance between chain ring teeth and frame (fig 2). At present I have a ...
gschenk's user avatar
  • 9,660
3 votes
1 answer
480 views

Shimano Alfine crankset Q Factor?

Do you happen to know what the Q Factor of the Alfine Crankset is? I've looked all over the web and can't find this piece of information. I'm interested in the single chainguard 42T version, and my ...
Robert's user avatar
  • 2,051
2 votes
2 answers
375 views

Upgrade bottom bracket

I want to upgrade my bottom bracket (square taper 68x113 threaded) to Shimano hollowtech and fit a new triple crankset. My gears are 3x10 so will my front gears still work with the new set up. What ...
Michael Giles's user avatar
0 votes
1 answer
389 views

Shimano 105 R7000 left crank compatible with Sora FC-3550?

Can I temporarily use my (power meter fitted) left crank Shimano 105 R7000 on my old bike that has Sora FC-3550 crankset? I assume that all Hollowtech 2 cranks should be interchangeable but I am not ...
HonzaBé's user avatar
  • 103
5 votes
1 answer
873 views

Hollowtech II BB alternative for stripped frame threads [duplicate]

I removed the BB (Shimano BB-93) from my Canondale Trail and found the drive side thread is stripped on BB and frame. See and What are the options for me to replace the BB? Is there an alternative ...
rolinger's user avatar
  • 179
2 votes
1 answer
706 views

Dura-Ace R9100 Bottom Bracket With A Dura-Ace FC-7900 Crankset?

I have just purchased a Dura-Ace FC-7900 crankset and I am trying to find a good, readily available bottom bracket to pair with it. With Shimano's Hollowtech II and Octalink II technologies, will the ...
Smithy's user avatar
  • 53
0 votes
2 answers
928 views

How to install a Hollowtech II crankset if it does not fit the top hat?

In threaded 2-part bottom brackets there is a plastic top hat/bearing insert/dust cover that goes between the BB's bearing and the spindle, so that they fit tightly and the spindle does not wobble. ...
homocomputeris's user avatar
7 votes
4 answers
9k views

Why does this hollowtech crankset have play?

Background Shimano deore crankset (not XT) The crankset has done about 10000km (6200miles). It is from a touring bike. Most of those 10000km was done with the bicycle loaded (bags on both front and ...
visano4588's user avatar
1 vote
2 answers
245 views

Misc bottom backet and crankset questions [closed]

I am planning to upgrade a few of my bikes .. some due to faulty BBs and some just to upgrade the crankset. Here are the questions I have: 1) Road vs MTB I read from the another post about Road vs ...
Edmund Fong's user avatar
1 vote
2 answers
667 views

External BB cranks not spinning well

I have a Cannondale F2000 that I'm updating and turning into a gravel/commuter bike. I replaced the original square taper bottom bracket with a new Hollowtech II version. Now the new crank does not ...
BBB's user avatar
  • 99
2 votes
2 answers
712 views

Upgrading a crank set

I presently have a 3x7 speed crankset with a sealed cartridge bottom bracket on my touring bike and want to upgrade to a new Hollowtech II bottom bracket and crankset, specifically, the SHIMANO Claris ...
Chas's user avatar
  • 21
1 vote
1 answer
3k views

How to remove stuck Shimano Hollow-Tech bottom bracket cups?

When I tried to remove the bottom bracket bearing cups using the BB tool it was very hard to move or it's just stuck. Tried WD40 then slowly tapping the tool using a mallet didn't work. To cut the ...
Kulelat's user avatar
  • 31
2 votes
1 answer
656 views

Threading for BB (British) for Hollowtech 2 or square taper crankset?

I have square taper crankset from Sugino (compact double 48-34). I am using their aluminium cartridge BB (I think it's 68mm). Anyway, I was wondering what is the difference, if any, regarding the ...
user avatar
3 votes
3 answers
2k views

How to tighten the Hollowtech II (on R2000 Claris) cranks?

The owner's manual on my new bike (with the new Shimano Claris, not the old one with Octalink) asks me to do this: After the first 20 km tighten the crankset and also tighten the pedals in the ...
Vladimir F Героям слава's user avatar
2 votes
1 answer
3k views

Using spacers on crank spindle instead of bottom bracket when fitting HollowTech MTB crank to road bb

HollowTech road BB is 68 mm wide and fits a road crank without spacers. Hollow tech mountain BB uses up to 3 x 2.5 mm spacers. Hence crank is designed to be used with 75.5 mm wide bottom bracket ...
mkpaa's user avatar
  • 788
5 votes
1 answer
3k views

What types of BB-axle to crankarms interfaces are there?

On the lowest end, we have the taper/square interface. I believe it is standard i.e. there are no variations in the sizes. image property of VP Components USA Then there is the Octalink. Actually ...
Vorac's user avatar
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