
Precision Machining & Custom Parts for Commercial Trucks
We focus on professional precision machining work. With advanced processing equipment and strict production standards, we create stable and durable mechanical components to satisfy various industrial usage demands.
Precision Machining for High-Precision Shafts
We produce finely engineered shafts via elaborate processing. Our capabilities cover:
- Diameter range: Φ3mm – Φ40mm
- Max length: 200mm
- Cylindricity ≤ 0.0025mm
- Diameter tolerance: ±0.0025mm
- SPC statistical control for mass production consistency
- Full inspection with CMM, cylindricity testers and video measuring systems
Strict dimension control guarantees excellent structural stability and consistent operational performance under complex working environments.
Precision Machining for High-Strength Sleeves
High-strength sleeves and mechanical components are made with premium raw materials and standardized manufacturing flow. Key specifications include:
- Dimensions: 61×70×22.5mm
- Material: X39CrMo17-1 (EN 10088-3 1.4122)
- Bore hardening treatment
- Inner hole surface hardness: 500+100HV10 (49-55HRC)
- Hardened layer depth Rht: 0.8+0.4mm
We also offer related high-performance components:
- High-hardness bushings for heavy-duty applications
- High-strength fasteners (Grade 10.9, tensile strength up to 1130MPa)
- Special heat treatment and surface treatments for corrosion & wear resistance
- Material expertise for harsh working environments
Outstanding wear and pressure resistance makes these parts well suited for severe heavy-duty working conditions.
Quality Control for Precision Machining Parts
Every part we produce is built under IATF 16949 quality standards. Our integrated manufacturing system includes:
Core Manufacturing Capabilities
- Advanced machining centers for ultra-precision components
- CMM, cylindricity testers, and surface roughness analyzers for full inspection
- SPC and PPAP quality control processes for consistent mass production
- ERP and lean manufacturing systems for efficient order management and on-time delivery
Key Quality Assurance
- Full process traceability (IQC, IPQC, OQC)
- Flexible production for both custom development and mass production
- Strict quality control to ensure reliable fit, form, and function
This system ensures our parts meet the strict requirements of heavy-duty applications.
The mature and reliable precision manufacturing expertise we gained here provides strong support for the production of our transmission control valves.

