CBB T47 77A for Shimano
T47 77A (T47a, T47 Asymmetric): A standard used by manufacturers such as Factor and Cervélo.
Specifications:
Internal Shell Diameter: 47mm
Shell Width: 76,75mm
Crankset Diameter: 24mm (Shimano crankset type).
Weight : 155 g.
Installation: CBB Flat KEY assembly tool included.
Free for orders over €200.
4 years warranty.
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The heart of your frame
Absolute Performance & Precision
Ceramic balls — Deliver a minimal friction coefficient, extreme hardness, and ideal thermal inertia to maximize power transfer.
Black-Oxide treatment — Applied to the races for superior corrosion resistance and optimal grease retention.
Mechanical Tolerance
Our threaded solution is designed to withstand the most extreme stresses without ever yielding. It is built upon a 7075 aluminum structure, machined to extremely tight tolerances.
This precision ensures perfect coaxiality between the two cups, eliminating any unwanted angular stress on the bearings.
Multi-Barrier Sealing
Total protection — Combines a sealed internal system, custom-engineered reinforced polyamide dust covers, and precision bearing seals to block out water, mud, and dust.
Anti-friction protective dust covers — The bearings' first line of defense, fully removable to simplify maintenance.
TECHNICAL SPECIFICATION
Design: Threaded solution.
Internal Sealing: Integrated internal system within the bottom bracket shell.
External Sealing: Protective dust covers.
Cups : Machined from 7075-T6 aluminum, featuring a single-color or dual-color anodized finish.
Protective covers : Made of glass fiber-reinforced polyamide.
ABEC-5 ceramic hybrid.
Balls: Si3N4 ceramic (silicon nitride, grade 5).
Races: Black-Oxide treated 52100 High-Carbon chromium alloy.
Seals: LLB (dual-lip light-contact seals).
Grease: Kluber Isoflex NB52.
CBB Flat KEY tool included.
(Exception: CBB BSA for Shimano and CBB ITA for Shimano bottom brackets require a Hollowtech II wrench.)
Learn more about their effectiveness in the attached full story below.
Our custom-built test benches simulate real-world, long-term conditions. They allow us to analyze the impact of time on performance and to optimize each component under controlled conditions.
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Installation
Precise installation is essential to ensure both the performance and maximum durability of your Nova Ride bottom bracket.
Installation ManualCreate your synergy. Save 15%.
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