Custom Precision AISI 4140 CNC Connecting Shafts
Product Overview
High-Strength AISI 4140 Steel
Excellent strength, wear resistance, and durability.
±0.005 mm Concentricity
Strict tolerance control throughout the entire machining process.
Multi-Process Manufacturing
Swiss turning, mill-turn machining, and CNC machining center combined for maximum precision.
Precision Cross-End Machining
Accurate cross-slot geometry for reliable assembly.
Stable Mass Production
Consistent quality from prototype to volume production.
Complete Quality Inspection
Critical dimensions are verified before shipment.
Product Details
Product Features
- AISI 4140 (42CrMo4) alloy steel
- Precision concentricity control
- Cross-end machining
- Flat surface milling
- High wear resistance
- OEM customization
Product Advantages
Producing this connecting shaft requires multiple machining technologies working together. Honscn first uses Swiss-type turning to establish the shaft geometry while maintaining ±0.005 mm concentricity. The cross-shaped head is then machined on a mill-turn center, followed by flat machining on a CNC machining center. This optimized process ensures excellent dimensional consistency and assembly performance.
Material Options
| Material | Features |
| AISI 4140 (42CrMo4) | High strength and toughness |
| 42CrMo | Heavy-duty mechanical parts |
| Stainless Steel | Corrosion resistance |
| Carbon Steel | Cost-effective applications |
Surface Finish
Available finishes include:
- Precision Machined Finish
- Black Oxide
- Zinc Plating
- Nickel Plating
- Heat Treatment
- Laser Marking
Manufacturing Process
Raw Material
↓
Swiss-Type Turning
↓
Mill-Turn Machining
↓
CNC Machining Center Milling
↓
Deburring
↓
Inspection
↓
Cleaning
↓
Packaging
Product Details
The connecting shaft features multiple precision-machined diameters, a cross-shaped end, and milled flat surfaces that require extremely accurate positioning. Every machining stage is tightly controlled to maintain concentricity, ensuring smooth assembly and dependable performance in automotive transmission systems.
Application Industries
- Automotive Parts
- Transmission Systems
- Drive Mechanisms
- Industrial Equipment
- Mechanical Assemblies
- Agricultural Machinery
- Robotics
- Automation Equipment
Product Comparison
| Item | Honscn | Standard Supplier |
| Swiss Turning | ✔ | Limited |
| Mill-Turn Machining | ✔ | Limited |
| CNC Milling | ✔ | Standard |
| ±0.005 mm Concentricity | ✔ | Difficult |
| Engineering Support | ✔ | Limited |
| OEM Manufacturing | ✔ | ✔ |
Quality Control
Every connecting shaft undergoes:
- Raw Material Inspection
- In-Process Inspection
- Concentricity Measurement
- Dimensional Inspection
- Surface Finish Inspection
- Final Quality Inspection
Packaging & Kitting Service
Honscn offers:
- PE Bag Packaging
- Rust Protection
- Barcode Labels
- Custom Packaging
- Assembly Kits
- OEM Labeling
Custom Manufacturing Capability
- OEM & ODM Manufacturing
- Prototype Development
- Small & Large Batch Production
- Drawing Optimization
- Engineering Support
- Complete CNC Machining Solutions
Why Choose Honscn
- Extensive experience machining automotive transmission components
- Advanced Swiss turning and mill-turn machining capabilities
- Expertise in complex multi-process manufacturing
- Tight tolerance control down to ±0.005 mm
- Experienced engineering support
- Stable production capacity
- Comprehensive quality inspection system
- Global OEM manufacturing partner
FAQ
What material is used?
AISI 4140 (42CrMo4) alloy steel.
What is the tolerance capability?
Critical concentricity can be controlled within ±0.005 mm.
Which machining processes are used?
Swiss turning, mill-turn machining, and CNC machining centers.
Do you manufacture according to customer drawings?
Yes, we provide complete OEM manufacturing.
Can you assist with design optimization?
Yes. Our engineering team reviews drawings before production.
Do you support prototypes?
Yes, prototype and low-volume production are available.
What industries use these shafts?
Automotive, industrial machinery, automation, robotics, and mechanical equipment.
How is quality ensured?
Every part undergoes dimensional, concentricity, and visual inspection.
What packaging options are available?
PE bags, custom labels, OEM packaging, and kitting services.
Do you export globally?
Yes. Honscn supplies precision components worldwide.
Related Case Study
Discover How Honscn Manufactured High-Precision AISI 4140 Connecting Shafts for a U.S. Automotive Parts Manufacturer
Learn how Honscn combined Swiss-type turning, mill-turn machining, and CNC machining center milling to produce high-precision AISI 4140 connecting shafts. By maintaining ±0.005 mm concentricity throughout multiple machining operations, our engineering team successfully delivered components that met strict automotive quality standards while ensuring reliable assembly and consistent mass production.
👉 Read the Full Case Study