Shimano BB-7700, Dura-Ace 7700
Main Photo
Category:  Bottom Brackets
Name:  Shimano BB-7700, Dura-Ace 7700
Brand:  Shimano
Primary Group:  Dura-Ace 7700
Model:  BB-7700
Years:  N/A
Country:  Japan
Weight:  175 grams (Actual)
Added By: Walkman-man on 06/15/15
Updated By: Walkman-man on 06/17/15
Additional Photos - click for full size
Shimano BB-7700, Dura-Ace 7700Shimano BB-7700, Dura-Ace 7700Shimano BB-7700, Dura-Ace 7700Shimano BB-7700, Dura-Ace 7700
Bearing Size/Count per sideBall and roller bearingsSpindle Markings
Fixed Cup MarkingsShimano BB-7700 BC 1.37 Japan [date code]Adjustable Cup MarkingsShimano BC 1.37 Japan
Spindle StyleOctalinkAxle Material
Available ThreadingsEnglish/ISO: 1.370 x 24;
Italian: 36mm x 24
Tools NeededASSOS BB Tool; Locknut Wrench  
General Information
It would look like production of this bottom bracket began at the same time as the Dura-Ace 7700 chainset, also showing on this database. This Dura-Ace model is different to the other Octalink designs due to it not being a self contained unit but having bearing cups and axle that can be disassembled. Both ball and roller bearings are used, and are user replaceable, along with the axle's bearing races, making this a cost effective design in the long term, compared to the above disposable models. The unit's axle is also different in colour to those of the other Octalinks which would suggest a lighter metal used- helping towards the unit's light weight. Seems a pity Shimano didn't filter the replaceable parts/disassembly technology down to the other models, seeing as they're all- even Ultegra- heavy units, as well as (more importantly IMO) highly priced over the long term, in comparison.
See Incorrect Information? Log-in to submit report.  
Additional Resources
Resources:Reference & ChartsCatalogs
Component Groups
Primary Group NameBrandQuick InfoBrowse Group Components
Dura-Ace 7700 SeriesShimano1997 - 2003, Road RaceView 14 Components
Details:  Shimano always leads with Dura-Ace. In 1997, 9 speed was introduced. They kept with the shift cables coming out of the side of the STI levers and greatly improved the shift quality. Ultegra (600) and 105 followed suit. 9 speed uses the same freehub body size as 8 speed.
Brand Information(click to expand)

Shimano Model Number Prefix List:

BB Bottom Bracket BL Brake Lever BR BRake
CB Coaster Brake CJ Cassette Joint CN ChaiN
CP Chain Protecto CR Chain Ring CS Cassette Sprockets
DF chain DeFlector DH Dynamo Hub FC Front Crank
FD Front Derailleur FE Fork Ends FH FreeHub
FS Front Suspension HB HuB HD HanDle bar
HP Head Parts (Head Set) HS Handle Stem IF Inter-3 Freehub
LP LamP MF Multi Freewheel PD PeDal
RD Rear Derailleur RH Rollerbrake Hub RM RiM
RR ReflectoRs RS Rear Suspension SB Shift Brake lever (Nexus, ?)
SC Speed Calculator (cycle computer) SF Single Freewheel Freilaufritzel SG Speed chanGe hub
SH SHoes SL Shift Lever Schalthebel SM SMall parts
SP Seat Post SQ Seat Quick release SS Single Sprocket
TL TooL WH WHeel ST Shift Brake Lever (STI, Rapid Fire, etc)
User Comments
Required
  Loading Comments

By pressing Verify below, you express verification that the photos shown are indeed of the component listed. Please do not verify if you are not sure that all photos are of the correct item. If you identify a photo that is NOT of the correct item, please use the Report feature to flag that photo.

Note: You can not verify photos that you have uploaded.
Brooks Saddles
VeloBase v.2.8.7 - a Fischer Frameworks application, Copyright ¬© (2024) - All rights reserved.
This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.

Find the information on useful? Please consider donating a few dollars towards the web-hosting cost. Thank you.