Advanced Ultra Precision Five-axis CNC-Machined Bicycle Bottom Bracket System

Product Specification

Advanced Ultra-Precision  five-axis CNC-Machined Bicycle Bottom Bracket System 

Product Overview:

Crafted through state-of-the-art CNC machining processes, our high-performance bicycle bottom brackets represent the gold standard in drivetrain efficiency and durability. Manufactured in our ISO 9001-certified facility with aerospace-grade precision, these components combine cutting-edge engineering with race-proven reliability to deliver unmatched power transfer across all cycling disciplines. The choice of professional pelotons and performance-focused riders worldwide, each bottom bracket undergoes rigorous quality control to ensure perfect bearing alignment, optimized stiffness-to-weight ratios, and exceptional longevity - whether conquering alpine climbs, technical singletrack, or endurance gravel routes. By integrating premium materials with micron-level machining tolerances, we've created a bottom bracket system that consistently outperforms OEM components while maintaining flawless compatibility with modern frame standards.

Key Technical Features:

Advanced Materials Engineering

Aerospace-grade 7075-T6 aluminum alloy (ultimate tensile strength: 572 MPa)

Optional titanium alloy (Grade 5) for ultra-premium applications

Proprietary heat treatment process enhances fatigue resistance by 40%

Precision CNC Manufacturing

5-axis CNC machining with ±0.01mm tolerance

Micro-finish surface treatment (Ra 0.4μm) for optimal bearing seating

Computer-balanced design eliminates rotational imbalance

Bearing Technology

Japanese-made hybrid ceramic bearings (Si3N4 balls with steel races)

Double-lip contact seals with high-temperature grease

ABEC-7 tolerance rating for smooth operation

Detailed Product Specifications Table

Performance Advantages:

Efficiency Gains

15% lower rolling resistance than OEM bottom brackets

3-5 watt power savings at 90rpm cadence

Break-in period of just 50km (vs 200km for standard BBs)

Durability Features

50,000km rated service life (3x industry average)

Corrosion-resistant anodizing (25μm thickness)

Wear indicators for proactive maintenance

Installation System

Includes proprietary installation tool kit

Torque specification laser-etched on body

Pre-loaded with anti-seize compound

Application Guide:

Road Cycling

Recommended model: ProRoad SL

Benefits: Maximizes power transfer for sprinting/climbing

Compatible with: Carbon fiber and aluminum frames

Mountain Biking

Recommended model: MTB Enduro Pro

Benefits: Mud-shedding design, impact resistance

Compatible with: 29er/27.5" full-suspension bikes

Gravel/Adventure

Recommended model: Gravel Ultimate

Benefits: Vibration damping, all-weather reliability

Compatible with: Frame bags and bikepacking setups

E-Bikes

Recommended model: eBike HD

Benefits: Handles 120Nm motor torque

Compatible with: Class 1-3 e-bike systems

Quality Assurance:

100% dimensional inspection via CMM

Batch testing for bearing smoothness (≤0.5N·m breakaway torque)

Vibration testing to simulate 10,000km of riding

Salt spray testing exceeds 500 hours

Why Consider Us?
No mold fees for aluminum profiles – We absorb these costs to reduce your expenses.  
No welding fixture charges – Another way we help you save.  
Combing different Producing Technology – Outsource Aluminium Profile, Shaped Metal, Metal Casting materials, MIM materials, then CNC machining to lower the unit price.
Cost-competitive production – Our lean manufacturing and expertise allow us to deliver high-quality parts at favorable prices.  
One-Stop Factory – Our ISO9001 IATF16949 Certificated factory provide laser cutting, bending, Stamping, CNC Machining, Sheet Metal Working, welding, Assembling in one factory, ensure stable quality control.