Join the Facebook Group: [ Ссылка ]
In this video I’m going to explain how to install a square taper bottom bracket. The process is pretty straightforward.
In this case we’re going to install a square taper bottom bracket for my Koga Miyata Adventure. I’ve also written an article about removing the bottom bracket which was in there.
The BB-UN300 square taper bottom bracket I bought was new. The non-drive side has an aluminium cup. There are also bottom bracket version with nylon cups.
I initially bought a bottom bracket with the wrong spindle length. It was a 132mm width but I needed a 123mm. I don’t know why I bought the wrong one since I’d already thrown away the old one.
The diameter of the cup is usually 68mm. as was mine. The other version is the 73mm.
The best thing would obviously be to buy the exact same version you’re replacing. But since that proved to be impossible with the Thun bottom bracket version I replaced, I decided to go for a Shimano.
After having bought the wrong version I found a database on Sheldon Brown’s website that included the correct size that corresponded with the crankset you we’re using.
I constantly had to look up videos about which way to turn the cups of the bottom bracket for getting them into the shell until I found the following video:
Remove a tough bottom bracket: [ Ссылка ]
So naturally the opposite goes for installing a square taper bottom bracket: both sides have to go backwards!
Tools used:
Park Tool Bottom bracket tool BBT-32: [ Ссылка ]
Park Tool 12-Inch Adjustable Wrench PAW-12: [ Ссылка ]
I've also written about blog post with more information. If you want to read this article go to "link coming soon"
Visit my website for more bike restoration tutorials: [ Ссылка ]
Instagram: [ Ссылка ]
Music is from the YouTube Audio Library
Song is "Palmetto Moon" from The 126ers
