Shimano Threaded Bottom Bracket BB-R9100 Installation
06-21-22, 04:34 PM
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Shimano Threaded Bottom Bracket BB-R9100 Installation
Does it matter which side (left or right) of a threaded BB-R9100 bottom bracket is installed first? For reference, the right side (i.e., drive side) has the inner cover attached.
Also, Shimano dealer manual says to put grease on the threads; would anti-seize be better? I have both. Thank you.
Also, Shimano dealer manual says to put grease on the threads; would anti-seize be better? I have both. Thank you.
06-21-22, 05:00 PM
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Both will work fine. Anti-Seize will last longer if your bike is underwater frequently but is a messy mess to clean off the threads and your hands and can be a permanent stain on clothes. Grease should be more than adequate for most riders.
06-21-22, 11:36 PM
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I don't know if it matters or not, but I always install the drive side first. Grease the threads on both the BB and the shell.
06-22-22, 12:14 AM
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I did not know I had to do both, especially when there is already a thin grey layer on the BB threads, so thanks for the tip.
06-22-22, 12:26 AM
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The grease is to act as insulator between the different materials, not for lubrication. Sounds like you are already familiar with anti-seize.
Either one should be fine. I use Super Lube multipurpose grease on my BBs on steel frame or aluminum frame with both steel and aluminum cups and both work fine. I'm in SF a few miles from the ocean also.
Either one should be fine. I use Super Lube multipurpose grease on my BBs on steel frame or aluminum frame with both steel and aluminum cups and both work fine. I'm in SF a few miles from the ocean also.
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06-22-22, 07:45 AM
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The grease is to act as insulator between the different materials, not for lubrication. Sounds like you are already familiar with anti-seize.
Either one should be fine. I use Super Lube multipurpose grease on my BBs on steel frame or aluminum frame with both steel and aluminum cups and both work fine. I'm in SF a few miles from the ocean also.
Either one should be fine. I use Super Lube multipurpose grease on my BBs on steel frame or aluminum frame with both steel and aluminum cups and both work fine. I'm in SF a few miles from the ocean also.
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06-23-22, 03:26 PM
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Nope. Back in the day essentially all BB cups were steel as were essentially all frames. Grease was used on the threads for what you would expect: allow proper installation torque and prevent corrosion.
06-23-22, 03:52 PM
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Both the frame and the bottom bracket cups are aluminum, but I am not sure what grade of aluminum.
Shimano Dura Ace BB-R9100 Bottom Bracket | Merlin Cycles
Will probably use anti-seize, as I have much more of that than grease.
Shimano Dura Ace BB-R9100 Bottom Bracket | Merlin Cycles
Will probably use anti-seize, as I have much more of that than grease.
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