The Shimano 105 BB-5500 bottom bracket has been working perfectly for a long time
The 105 BB-5500 bottom bracket from Shimano is an Octalink bottom bracket with 8-speed gearing and a steel axle. The 109.5 mm versions are compatible with 2-way cranks, the 118.5 mm versions with 3-way cranks. Even though it has been around for a while, this bottom bracket still holds up.
Specifications:
- Application:
- Road
- Series:
- 105 5500
- Type:
- BSA, ITA
- Shell Width:
- 68 mm, 70 mm
- Axle Length:
- 109.5 mm, 118.5 mm
- Axle Type:
- Octalink (Road)
- E-Type Compatibility:
- no
- Chaincase Compatibility:
- no
Technical Information:
- Bearings:
- steel
- Axle Material:
- steel
- Bottom Bracket Cup Material:
- Aluminium
Compatibility:
- Octalink crank arms with eight-speed splines for shorter grooves (Octalink MTB)
Features:
- 8x toothing of bottom bracket axle and crank
Technology:
Octalink
In Shimano’s Octalink system, the bottom bracket and crank are connected by an 8-tooth contact surface. This provides greater rigidity and greater load capacity, especially compared to conventional square systems.
Models:
BSA 68×109.5:
- Threads:
- BSA
- Shell Width:
- 68 mm
- Axle Length:
- 109.5 mm
- Compatibility:
- 2-speed
- Manufacturer Number:
- E-BB5500B09
BSA 68×118.5:
- Threads:
- BSA
- Shell Width:
- 68 mm
- Axle Length:
- 118.5 mm
- Compatibility:
- 3x
- Manufacturer Number:
- E-BB5500B18
ITA 70×118.5:
- Threads:
- ITA
- Shell Width:
- 70 mm
- Axle Length:
- 118.5 mm
- Compatibility:
- 3x
- Manufacturer Number:
- E-BB5500I18
Contents:
- 1 x Shimano BB-5500 bottom bracket
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