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FEATURED PRODUCTS
Our precision-machined products use advanced Swiss-type technology to meet the high-precision, high-efficiency needs of various industries. From complex components to tiny parts and custom solutions, we ensure every product meets strict customer standards.
Automotive Part Relays for Vehicle Electrical Control Systems
Material: High-conductivity stainless steel (e.g., SUS304/316L) or copper alloy (e.g., phosphor bronze), with nickel/tin plating
Shape: Cylindrical shape with internal threads or stepped interface
Size Range: Diameter: Φ8mm – Φ25mm; Height: 10mm – 40mm (customizable)
Internal Design: Precision-machined bore for pin insertion or threaded connection
Surface Finish: Polished + plated (to enhance conductivity and anti-oxidation)
Manufacturing Process: CNC turning + precision grinding + electrochemical polishing
Automotive Precision Spindle Shaft OEM Machined Metal Parts
Material: Automotive mandrels are typically made of high-strength metal materials such as carbon steel, alloy steel, or stainless steel
Shape: Mandrels are generally cylindrical in shape, with some products featuring steps, threads, chamfers, or locating grooves
Size Range: Diameter typically ranges from Φ3 mm to Φ30 mm; length can be customized
Internal Design: Some mandrels may have through holes, blind holes, or hollow structures internally to reduce weight or meet assembly and functional requirements
Surface Treatment: Mandrel surfaces typically undergo various treatment processes, such as electroplating, nickel plating, blackening, polishing, or anodizing
Manufacturing Process: Mandrels are generally manufactured using high-precision CNC turning, CNC precision machining, grinding, and other processes, and undergo rigorous dimensional inspection and quality control to ensure that dimensional accuracy, concentricity, and surface finish meet the standards for automotive parts
High Performance Automotive Relay for EV Battery and Power Control Systems
Material: High-conductivity stainless steel (e.g., SUS304/316L) or copper alloy (e.g., phosphor bronze), with nickel/tin plating
Shape: Cylindrical shape with internal threads or stepped interface
Size Range: Diameter: Φ8mm – Φ25mm
Height: 10mm – 40mm (customizable)
Internal Design: Precision-machined bore for pin insertion or threaded connection
Surface Finish: Polished + plated (to enhance conductivity and anti-oxidation)
Manufacturing Process: CNC turning + precision grinding + electrochemical polishing
High Precision Square Connecting Shaft and Threaded Block Assembly
Material: Stainless steel, carbon steel, alloy steel
Dimensions: Approximately 6 mm in diameter, approximately 48 mm in length (customizable)
Structure: Integrated cylindrical connecting shaft, square threaded block, square/round hole composite structure
Dimensional Accuracy: Tolerance: ±0.001 mm, Thread accuracy: 6H/6g (or as per drawing requirements)
Processing Technology: CNC turning + CNC milling + internal and external thread machining
Applications: Automation equipment, mechanical transmission components, tooling fixtures, industrial equipment connection and positioning systems
High-Precision CNC Machined Twin Helical Screw Shaft
This twin helical screw shaft is manufactured from high-strength metal materials using CNC precision machining. It features uniform helical geometry, high dimensional accuracy, and excellent wear resistance. Designed for high-load and high-speed applications, it is widely used in extrusion equipment, transmission systems, and automation machinery. Custom designs based on drawings or samples are available.
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CNC precision machining ensures consistent helical profiles
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High concentricity design for smooth and stable operation
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Superior surface finish reduces friction and wear
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Multiple material options for various working conditions
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Customizable dimensions for diverse equipment applications
High-precision Metal Retaining Ring for Front-Facing Camera Electronic Module
Material: Stainless Steel (304 or 316L), with brushed or polished finish
Outer Diameter: Approx. 5 mm (customizable)
Inner Diameter: Approx. 4.5 mm (fits standard lens modules)
Wall Thickness: Approx. 1 mm
Height: Approx. 1.5 mm
Structural Features: Circular ring with split/cutout design for snap-fit assembly and disassembly
Manufacturing Process: CNC precision machining + high-precision grinding
Keyless Smart Electronic Door Lock for Digital Access Control
- Material:High-strength brass alloy with polished surface finish
- .Dimensions:Diameter: approx. 10mm, Length: approx. 28mm (customizable)
- Structure Type:Dual-sided pin tumbler design (key insertable from both sides)
- Pin Count:5 sets of pins (each set includes driver pin and key pin)
- Application:Electronic door locks, smart locks, hotel locks, building access control systems, etc.
OEM Automotive Power Relay for Battery and Electrical Systems
Material: High-conductivity stainless steel (e.g., SUS304/316L) or copper alloy (e.g., phosphor bronze), with nickel/tin plating
Shape：Compact rectangular structure suitable for automotive installation
Size Range:Diameter: Φ8mm – Φ25mm
Height: 10mm – 40mm (customizable)
Current Capacity:Suitable for medium to high current switching applications
Surface Treatment:Anti-corrosion treatment for long-term durability
Manufacturing Process:Precision assembly and automated production process
Our core services
ODM / OEM
Providing one-stop precision machining solutions for global customers
Precision Metal Parts Manufacturing
Applied to medical, automotive, electronics, and aerospace industries ensuring dimensional stability and durability.
High-Efficiency Swiss-type Machining Services
Supports multi-material processing and efficient production, from rapid prototyping to mass manufacturing.
5-Axis & 6-Axis Precision Machining
Achieves 0.001mm tolerance and enables high-precision machining of complex surfaces and irregular geometries with stable consistency.
Custom Functional & Structural Parts
Developed based on 3D drawings or samples, with structural optimization, assembly testing, and surface finishing support.
Customization process
From Concept to Delivery – Tailored for Your Needs
Dongguan Caiyi Precision Technology Co., Ltd.
Factory strength and precision technology
Dongguan Caiyi Precision Technology Co., Ltd. is a Swiss-type machining manufacturer with strong capabilities and precision technology, committed to delivering high-quality products through continuous investment in equipment, technology, and talent.
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NEWS & TUTORIALS
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25
Nov
Multi-Axis Machining Revolution: How CAIYI’s 70 CNC Machines Redefine Precision Manufacturing
In the race for 0.001 mm accuracy, even the slightest micron-level deviation can lead to failure in high-end applications. Dongguan Cai...
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Nov
Zero-Defect Manufacturing: CAIYI’s 12-Year Quality Control System Sets a New Benchmark in Precision Engineering
In the world of precision manufacturing, quality is not just a standard — it is the foundation of survival. Dongguan Caiyi Precision ha...
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Dec
2025 Precision Machining Industry Outlook: High-Accuracy Parts Driving Global Innovation
As global demand for high-performance components continues to grow, the precision machining industry is entering a new stage of technol...
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