I have a sealed shimano cartridge splined BB. Can a BB tool use to remove Octalink/Isis type be used? I saw on the Shimano tech doc it seems that the same tool (UN74S) to remove a UN26 can be used for a 105 Octalink type. Therefore I am thinking a splined sealed cartridge shares the same notch format as the Octalink/Isis BB. Please confirm. thanks!
'''96 Litespeed Catalyst, '05 Litespeed Firenze, '06 Litespeed Tuscany, '12 Surly Pacer, All are 3x8,9 or 10. It is hilly around here!
Originally Posted by Bezalel
The spline interface is the same but Octolink/ISIS spindles are wider than square taper spindles so some older tools designed for square taper won't fit over an Octolink/ISIS spindle.
Right. Park Tool's first version of the BBT-2 tool wouldn't clear the larger diameter Octalink/ISIS spindles but they quickly revised it without changing the model number. The blister pack just had a yellow sticker saying it would fit the newer styles. The current BBT-22 works on all square taper and Octalink/ISIS cartridges.