Gr5 Titanium Bicycle Pedal Axle

Product Overview

Our Gr5 Titanium Bicycle Pedal Axle, engineered for the demanding cyclist and precision-focused manufacturer, represents the pinnacle of strength-to-weight optimization. Machined from premium Ti-6Al-4V (Grade 5) material that is compliant with ASTM B348, these spindles offer a 40–45% weight reduction compared to traditional Cr-Mo steel axles without compromising structural integrity.

Unlike generic titanium parts, our axles are specifically designed for high-stress fatigue environments (road racing, MTB, BMX). We utilize advanced CNC turning and grinding processes to ensure perfect concentricity, eliminating the common “wobble” or bearing play found in inferior aftermarket shafts. Whether you are a bike brand looking for OEM upgrades or a workshop needing custom dimensions, we deliver race-ready reliability.

Why Choose Our Gr5 Titanium Axles:

• Fatigue Safety: Threads are formed using thread rolling technology (not cutting), preserving metal grain flow and increasing fatigue life by >30%.
• Precision Fit: Bearing seats are ground to ISO h6 tolerance (+0/-0.008 mm) to ensure a tight, creak-free interference fit with cartridge bearings.
• Superior Material: Manufactured strictly from Ti-6Al-4V, offering a Yield Strength of ≥ 828 MPa (2x stronger than Grade 2 Titanium).
• Custom Finishes: Available in PVD Gold, Black, Rainbow (Oil Slick), or Mirror Polished finishes for distinct visual branding.
• Traceable Quality: Every batch comes with a Material Test Certificate (MTC) and undergoes ultrasonic testing (UT) to ensure zero internal defects.

Key Technical Specifications

We provide fully transparent technical data to support your engineering validation.

Note: Custom dimensions (Length, Diameter, Taper) are available upon request based on customer drawings or samples.

Manufacturing Excellence: Why Our Axles Are Safer

Rolled Threads vs. Cut Threads: The Safety Difference

For critical safety components like pedal axles, the manufacturing method dictates the fatigue life. We exclusively use Thread Rolling technology.

• Cut Threads (Competitors): The machining tool cuts through the material’s grain structure, creating potential stress raisers where fatigue cracks can initiate.
• Rolled Threads (Ours): The material is cold-formed under high pressure. This process contours the grain flow to match the thread profile and induces a compressive residual stress at the thread root, significantly improving resistance to cyclic fatigue failure according to ISO 4210 standards.

ISO h6 Precision Grinding

A loose axle causes bearing wear and annoying clicking noises. Our finishing process includes centerless grinding to achieve ISO h6 tolerances. This ensures a perfect transition or interference fit with standard bearings (like 686Z, 698Z), guaranteeing smooth rotation and extended bearing life.

Customization & OEM Services

We empower bicycle brands and custom workshops to create distinct products without the need for extensive in-house manufacturing capabilities.

1. Reverse Engineering (No Drawing? No Problem)

Many clients have a physical steel sample but no CAD files. We offer comprehensive reverse engineering services:

• Send Sample: Ship us your original Cr-Mo or Steel axle.
• Scanning & Modeling: We use high-precision 3D scanners and CMM to create a digital model, optimizing the design for Titanium’s properties (e.g., reinforcing stress points).
• Prototype: A test sample is produced for your verification before bulk production.

2. Advanced Surface Finishes

Enhance both the aesthetics and durability of your axles.

• PVD Coating (Physical Vapor Deposition): Available in Gold (TiN), Black (TiCN), and Rainbow (Oil Slick). PVD coatings are harder than the titanium substrate itself, offering superior scratch resistance against shoe rub.
• Anodizing: Available in purple, blue, green, etc., for color matching.
• Mirror Polishing: High-gloss finish (Ra ≤ 0.2 μm) for a premium look.

3. Laser Branding

We support custom laser engraving on the axle end or shaft body, including your Brand Logo, Model Number, or “L/R” installation indicators.

Installation & Maintenance (Vital Tips)

Preventing Galling (Cold Welding)

Titanium is reactive. When threading a titanium axle into an aluminum crank arm without protection, galling can occur, causing the parts to seize.

• Recommendation: Always apply a high-quality Copper-based or Nickel-based Anti-Seize Compound (not just standard grease) to the threads before installation.
• Torque Spec: Follow the crank manufacturer’s torque specifications, typically 35-40 Nm. Do not over-torque.

Compatibility Note

Our axles are machined to precise dimensions. However, please ensure your pedal body bearings are in good condition. Worn bearings can damage the precision-ground surface of the titanium shaft over time.

Quality Assurance & Certificates

As a professional titanium pedal axle manufacturer, quality is our baseline, not an option.

• Material Traceability: We refuse to use recycled scrap. All raw materials are sourced from premium titanium sponge, with an MTC (Material Test Certificate) provided for every batch (Heat No. traceable).
• NDT Testing: 100% Ultrasonic Testing (UT) to detect internal cracks or voids in the raw bar stock.
• Dimensional Report: A final inspection report covering Thread Go/No-Go gauge tests, concentricity, and bearing seat diameter is included with your shipment.

Frequently Asked Questions (FAQ)

Q: Is Gr5 Titanium strong enough for Downhill (DH) or Enduro riding?

A: Yes, provided the design is optimized. Our Gr5 (Ti-6Al-4V) axles have a yield strength ≥ 828 MPa, significantly higher than standard Grade 2 titanium. Combined with our rolled thread process, they meet ISO 4210 fatigue standards for mountain bike use. For extreme riders (>100kg), we can customize the axle diameter for extra safety.

Q: What is the MOQ for custom OEM orders?

A: Our standard MOQ is 100 pieces. We support mixed orders (e.g., 50pcs Gold + 50pcs Black) to help you launch your product line with lower inventory pressure.

Q: Can you machine axles for specific brands like Shimano or Crankbrothers?

A: Yes, we specialize in aftermarket replacements. We can machine replacement titanium spindles for most major brands via our reverse engineering service. Note: We manufacture compatible parts, not original brand parts.

Q: How do you package the axles to prevent damage during shipping?

A: Each axle is individually sleeved in a protective net and placed in a custom foam tray or blister pack to prevent thread damage and surface scratches.