Factory Profile
Qingdao Chengkun Gear Co., Ltd. is a high-tech enterprise dedicated to the R&D, design, and precision manufacturing of spiral bevel gears. With an annual production capacity of 200,000 sets, we are a major force in the high-precision gear industry.
Our team is led by 3 national-level experts and supported by 10 senior engineering technicians. To ensure world-class quality, we are equipped with an array of international advanced facilities, including Gleason (USA) CNC gear milling machines, Tianjin Jingcheng CNC machines, and Zhongda Chuangyuan high-gear milling centers. Our comprehensive infrastructure also features professional gear measurement centers, full metallographic testing equipment, and a dedicated heat treatment center, ensuring every gear we produce reaches peak performance.
Application
Commercial Vehicle Axles
Exceptional vibration and noise control for a quiet and comfortable ride; NVH performance achieves best-in-class levels, with mass-production tolerances guaranteed to meet OEM specifications.
Passenger Car Differentials
Engineered for long-haul logistics. Custom-fit for Mitsubishi, Isuzu, and Foton platforms to ensure maximum uptime and extreme durability under full-load conditions.Forged 20CrMnTiH5/8620 steel with precision-ground profiles.
Agricultural Ring and Pinion
Agricultural machinery operates in the world’s toughest environments, from muddy fields to rocky terrains.Engineered for high impact resistance in muddy and rocky terrains. Ensures superior gradeability during critical harvest seasons.
All-Wheel Drive Transfer Cases
The complexity of All-Wheel Drive (AWD) systems demands exceptional precision in power splitting. Optimized for friction reduction and high-speed stability. Deliver the high-end precision needed for efficient power splitting and optimal control.
Featured Products
High-performance Crown Wheel and Pinion sets specifically engineered for the Japanese truck market (ISUZU, MITSUBISHI, HINO, NISSAN、TOYATA、MAZDA、SUZUKI，etc). We utilize high-grade 20CrMnTiH alloy steel, forged by 2,500-ton presses to ensure optimal grain flow and structural integrity. Combined with Gleason CNC tooth milling and automated deep-layer carburizing heat treatment, our gears achieve a surface hardness of HRC58-62, significantly extending fatigue life during heavy-load climbing and long-haul transportation. conditions.
Precision bevel gear series developed for premium European vehicles (Mercedes-Benz, BMW, VOLVO、FIT、IVECO、SCANIA，etc). Adhering strictly to IATF 16949 quality standards, we employ advanced grinding and polishing technologies to control profile and lead errors within micron levels. This superior meshing precision not only eliminates drivetrain noise but also minimizes power loss, perfectly meeting the stringent European requirements for driving precision and cabin quietness.
High-performance Differential Assemblies for European passenger cars. Utilizing high-precision automated assembly lines, we achieve ultra-precise fine-tuning of gear backlash. Every assembly undergoes load-simulated road testing before delivery to guarantee zero vibration and noise at high speeds. This not only elevates the driving experience but also provides drivers with OEM-level safety assurance.
OEM/ODM Working Process
Inquiry
☑24-hour rapid response for technical drawing analysis and OEM consulting.
Quotation
☑ Transparent, competitive pricing with detailed process routing within 48 hours.
Sampling
☑ Precision prototyping with full inspection reports for client approval before mass production.
Production
☑IATF 16949 certified mass production using Gleason CNC equipment for high consistency.
Quality Control
☑ Full-process monitoring from raw material spectral analysis to bevel gear measurement.
Dispatch
☑Export-grade anti-rust packaging and reliable global logistics for on-time delivery.
Manufacturing Process
Material Selection
We source premium 20CrMnTiH5/8620 alloy steel, utilizing spectral analysis and ultrasonic flaw detection to guarantee maximum fatigue resistance and superior hardenability from the start.
Sawing & Blanking
Our high-precision CNC band sawing ensures minimal tolerances and reduced waste, providing uniform steel billets to guarantee consistent quality throughout the subsequent forging process.
Forging
High-temperature die forging optimizes metal grain flow and creates a denser microstructure, enabling gears to handle massive torque loads for commercial and construction machinery.
Normalizing
Strictly controlled normalizing eliminates internal stresses and refines grain size, ensuring uniform hardness and an ideal foundation for high-precision, subsequent CNC machining.
Machining
Using Gleason CNC machines, we produce equidistant bevel gear with 0.01mm tolerances. This ensures perfect meshing, significantly reducing NVH for smoother , quieter vehicle operations.
Heat Treatment
Deep-case carburizing creates a hard surface and tough core, ensuring superior wear resistance and impact absorption for a service life of 700,000-800,000 cycles.
Quality Inspection
Our Gear Measurement Center and Metallographic Lab audit profiles and microstructure, ensuring every unit bevel gear meets rigorous OEM precision standards through advanced diagnostic testing.
Packaging & Logistics
With anti-rust treatment and reinforced export-grade packaging, we ensure "zero-damage" delivery across our global network, reaching customers in perfect, factory-new condition.
