Precision machining service for crank arms, spider interfaces, chainring mounts and lightweight performance components:
Road crank arms
MTB crank arms
Gravel cranksets
Lightweight hollow structures
Custom length options
Direct mount spiders
BCD adapters
Chainring carriers
Lock rings
Chainring bolts
ISIS spline interfaces
Square taper
Hollow spindle system
Custom spline geometry
Crankset prototyping
Shape customization
Test report
Small batch production
Fast delivery
By abandoning the precision errors and structural defects of traditional casting and stamping processes, a complete set of CNC precision machining equipment is used to ensure the fit and service life of each crankset.
| Material | Features | Machining | Applications | Surface Finish |
|---|---|---|---|---|
| 7075-T6 Aluminum | High strength aluminum alloy Excellent strength-to-weight ratio Good rigidity for load-bearing parts Lower density than steel Suitable for weight-sensitive applications |
Good CNC machinability Suitable for precision pocket machining Supports complex geometry machining Performs well in 5-axis operations Compatible with thread milling and spline machining |
MTB crank arms Road bike cranksets Lightweight performance components Direct mount spiders High-strength interface parts |
Hard anodizing Standard anodizing Sandblasting + anodizing Polishing |
| 6061-T6 Aluminum | Good corrosion resistance Stable machining performance Lower material cost compared with 7075 Easy surface treatment Good dimensional stability |
Excellent milling performance Stable tool wear behavior Suitable for prototype runs Efficient for medium-volume production Good consistency across batches |
Prototype crank arms Test samples Development batches Medium-load components Production validation parts |
Color anodizing Sandblasting Matte finish Polishing |
| Titanium Grade 5 | High strength Lower density than steel Excellent corrosion resistance Good fatigue performance Premium material for high-end applications |
More difficult to machine than aluminum Lower cutting speed required Higher tool wear during processing Longer machining cycle time Requires stable fixture control |
Premium crank components Limited production runs Lightweight performance assemblies Specialty drivetrain parts |
Bead blasting Polishing Natural titanium finish Surface texturing |
| Material | 6061-T6 Aluminum | 7075-T6 Aluminum | Titanium Grade 5 |
|---|---|---|---|
| Strength Level | Medium | High | Very High |
| Weight | Light | Light | Medium |
| Machinability | Excellent | Good | Challenging |
| Corrosion Resistance | Good | Moderate | Excellent |
| Surface Finish Compatibility | Excellent | Excellent | Good |
| Prototype Suitability | Excellent | Good | Limited |
| Production Cost | Lower | Medium | High |
| Typical Use | Prototype / Standard Parts | Performance Components | Premium Parts |
We specialize in build‑to‑print services, delivering high‑precision machining solutions for complex geometries with extensive material expertise, flexible production capacity, and rigorous quality control throughout the whole process.
