Hoping someone can help. I have a new BBR60 and R7100 105 crank. It's so hard getting the crank arm into the BB. I tried when the BB was installed on the bike, and couldn't. Then pulled the BB of the bike to check if the arm would fit. It's extremely tight. Is this normal? Is there a trick to this or am I missing something?

Sometimes, light persuasion with a soft rubber mallet may be required but anything beyond that isn't normal. Here's a Park Tools video showing installation and removal.

Quote from: paxoxll on September 21, 2024, 07:37:17 PM
Hoping someone can help. I have a new BBR60 and R7100 105 crank. It's so hard getting the crank arm into the BB. I tried when the BB was installed on the bike, and couldn't. Then pulled the BB of the bike to check if the arm would fit. It's extremely tight. Is this normal? Is there a trick to this or am I missing something?

How did u manage this? got the same "issue" not sure why

Gotta lube that axle and then use a rubber mallet, maybe a towel for protection and gently hammer it in. That's just how Shimano cranks and the BBR60 BB fit. It's quite tight and it'll be the same process taking it off as well!

If the BB is not correctly faced, It can be a problem. But yes, you can use a rubber mallet.