Originally Posted by
FBinNY
This is a cartridge bottom bracket, probably with radial bearings. There is no adjustment for bearing play or preload, so what you see is what you get, but some axial play is common and acceptable with radial bearings.
If the lockrings are properly tightened, you've installed it correctly.
I don't think this is accurate. The Dura Ace version of the Octalink bottom bracket is indeed adjustable and can be relubed and maintained, unlike the Ultegra (BB-6500) and 105(BB-5500) versions. A search on the Shimano Tech Document site for "BB-7700" turned up a .pdf of a Shimano tech document that describes both the installation and adjustment:
http://techdocs.shimano.com/media/te...9830646804.pdf