Titanium Bottom Bracket Shell is a lightweight threaded bottom bracket component engineered for Threaded bottom bracket shell sleeve for frame. Forged and CNC machined from Grade 5 Ti-6Al-4V, it achieves 40-45% weight savings versus steel while maintaining the fatigue life required for demanding cycling applications. Threaded interfaces are designed to prevent galling in outdoor environments.
Titanium Bottom Bracket Shell
| Technical Parameter | Specification |
|---|---|
| Component SKU | TI-CYC-FRAM-BOTTOM |
| Standards & Specifications | MIL-STD-810HASTM B117 |
| Surface Finish | PVD TiAlN coating (2-3um, HV2500) |
Titanium Bottom Bracket Shell
Threaded bottom bracket shell sleeve for frame
| Technical Parameter | Specification Value |
|---|---|
| International Compliance | MIL-STD-810H, ASTM B117 |
| Surface Finish & Max Temp | PVD TiAlN coating (2-3um, HV2500) |
| NDT & Quality Control | Magnetic Particle Inspection (MPI) per ASTM E1444; Dimensional verification via CMM per ISO 10360 |
- • 100% Traceability: Mill Test Certificate (EN 10204 3.1) with heat analysis & mechanical testing.
- • NDT Verification: Magnetic Particle Inspection (MPI) per ASTM E1444; Dimensional verification via CMM per ISO 10360.
- • Compliance: REACH, RoHS 3 certified. FAI AS9102 available.
- • Process: 5-axis CNC contouring, electropolishing, ultrasonic clean, vision inspection.
- • Thermal Stress Relief: Post-machining vacuum annealing (540-675°C under Argon) reduces distortion risk >70%.
- • Rolled Threads: Thread rolling (not cutting) increases fatigue limits by 30-50%.
Q: What surface finishes are compatible with Titanium Bottom Bracket Shell for cycling use? ▼
Titanium Bottom Bracket Shell can be supplied with bead-blasted matte (Ra 1.6-3.2 µm), brushed satin, mirror polish, or PVD-colored finish. Bead-blasted + passivation is the standard for threaded bottom bracket as it provides the best balance of cosmetic consistency, corrosion resistance, and cost. Anodized colors (gold, blue, purple per ASTM B136) are available on request.
Q: What is the typical lead time for Titanium Bottom Bracket Shell orders? ▼
Standard lead time for Titanium Bottom Bracket Shell is 15-25 business days depending on quantity and complexity. Rush orders (3-5 working days) are available for prototype evaluation. Sample evaluation (1-5 units) can be expedited to 5-7 business days. Volume pricing is available for production quantities above 100 units.
Q: What material certifications are provided with Titanium Bottom Bracket Shell? ▼
Each Titanium Bottom Bracket Shell shipment includes EN 10204 Type 3.1 mill test certificate with chemical analysis, mechanical properties, and heat identification. Dimensional inspection reports and Certificate of Conformance (CoC) are standard. First Article Inspection Reports (FAIR) per AS9102 are available on request for threaded bottom bracket.
§ Why Grade 5 Ti-6Al-4V for threaded bottom bracket
Function
A precision Frame Hardware component designed for . The selection of Grade 5 Ti-6Al-4V provides the optimal balance of strength-to-weight and environmental resistance required for this Cycling / Bicycle application.
Specifications
- SKU: TI-CYC-FRAM-BOTTOM
- Category: Frame Hardware
- Industry: Cycling / Bicycle
- Material: Grade 5 Ti-6Al-4V
- Process: 5-axis CNC contouring, electropolishing, ultrasonic clean, vision inspection
- Weight: Weight optimized through topology analysis - 30% lighter than baseline
§ Fatigue & Dimensional Inspection Protocol
Quality Management
Quality system compliant with ISO 9001:2015. Each Titanium Bottom Bracket Shell batch includes full material traceability, dimensional inspection results, and a Certificate of Conformity (CoC).
Inspection & NDT
Vision-based optical inspection for surface defects; helium leak testing for sealed interfaces; eddy current surface crack detection on high-stress areas
§ Lightweight Component Manufacturing Process
Titanium Bottom Bracket Shell is manufactured using 5-axis cnc contouring, electropolishing, ultrasonic clean, vision inspection. Each operation is performed by certified machinists with real-time process monitoring and dimensional verification at critical stages. Heat code traceability is maintained throughout all production steps.
Commercial Logistics & Procurement Framework
Pricing and lead times for Titanium Bottom Bracket Shell are batch-dependent. Contact our supply chain team for volume-based tiered pricing.
Regulatory & Quality Assurance Ledger
Verifiable certifications for Titanium Bottom Bracket Shell
Material Test Certificate (MTC)
EN 10204 3.1
Environmental Compliance
REACH (EC No 1907/2006)
Restricted Substances
RoHS 3 Directive (2015/863/EU)
Dimensional Tolerances
ISO 2768-m
Standard: MIL-STD-810H
MIL-STD-810H
Standard: ASTM B117
ASTM B117
Systems Interconnectivity & Topology
Cross-functional integration matrix for Tier-1 supply chains and assembly orchestration.
- ▸ Platform Interface Plate
- ▸ System Integration Frame
Titanium Bottom Bracket Shell
Material: Grade 5 Ti-6Al-4V
SKU: TI-CYC-FRAM-BOTTOM
Industry: Cycling / Bicycle / System: Bicycle Suspension, Frame Hardware & Linkage
- ▸ Retention Clip Assembly
- ▸ Compression Spring Set
- ▸ Installation Tool
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Founded in 2011 in Baoji's Titanium Valley, BOZE Metal is dedicated exclusively to titanium — from raw material to precision engineering. AS9100D, ISO 13485 & ISO 9001 certified with 500+ clients across Aerospace, Medical & Motorsport industries, we deliver end-to-end precision titanium CNC machining with full material traceability from source to component.
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