Dahong Precision is dedicated to solving the core challenges in automation component sourcing. Our manufacturing facility in Shenzhen serves as the central hub for engineering expertise and quality control. With a strategic location and convenient logistics infrastructure, we are able to respond quickly to the needs of customers worldwide.
You will communicate directly with the engineers responsible for manufacturing your parts, ensuring accurate technical interpretation and efficient implementation of your design requirements.
For automation equipment engineers, simply upload your PDF, CAD, or STEP files, and receive a quotation within 12 hours.
Dahong Precision specializes in high-precision CNC machining (±0.005 mm), which is critical for automation components such as linear guide parts, gears, precision bushings, couplings, custom fixtures, machine frames, and mounting plates.
Whether you require a single OEM component made from metal or engineering plastics, or scalable production, the same engineering team will support your project from prototype to mass production.rt c
Lead Time:
Fastest CNC machining turnaround: as quick as 3 days
Tolerance:
Standard: ISO 2768-m (±0.1 mm)
High precision: ±0.01 mm or up to ±0.005 mm
Core Services:
3-Axis / 4-Axis / 5-Axis CNC Machining
CNC Machining Capabilities
3-axis CNC machining operates along three linear axes: X, Y, and Z. Machining multiple faces requires multiple manual setups, which can introduce positioning errors.
Applications: Plates, frames, brackets, and shallow cavities. Ideal for simple parts and batch production.
Lowest machining cost and straightforward programming.
4-axis CNC machining adds one rotary axis to the three linear axes (A-axis rotating about X or C-axis rotating about Z). The workpiece can be rotated to machine multiple faces in a single setup, reducing manual intervention and datum shift errors caused by repeated setups.
Applications: Shaft-like components, multi-face hole patterns on box-shaped parts, circumferential features, and helical grooves.
5-axis CNC machining adds two rotary axes to the three linear axes, enabling simultaneous five-axis machining. It allows the tool orientation to be adjusted for improved accessibility, shorter tool overhangs for greater rigidity, and avoidance of zero cutting speed at the center of a ball-nose cutter.
RTCP (Rotational Tool Center Point) is essential for simultaneous five-axis machining. Five-axis machining enables complex geometries to be produced in a single setup, supported by RTCP and CAM post-processing.
Applications: Impellers, turbines, propellers, deep-cavity molds, and aerospace structural components.
Advantages: Single-setup machining of complex contours, with the highest equipment and programming costs.
CNC Turning · Wire EDM · Grinding: Process Comparison and Selection
Part Characteristics
Rotational parts · Shaft sleeves · Threads------Select turning (highest efficiency)
Irregular holes · Quenched materials · Mold inserts------Select wire EDM (no hardness limitation)
High-precision mating surfaces · High surface finish · Brittle parts------Select grinding (highest precision)
| Process | Principle | Typical Shapes | Achievable Precision | Surface Roughness | Hardness Limit | Typical Parts |
| CNCTurning | Workpiece rotates; cutting tool feeds to remove material | Rotational parts: external diameters, internal bores, end faces, Tapered surfaces,threads | Fine turning IT6~IT7 | Ra 0.8–3.2 μm; precision: approx. Ra 0.4 μm | Low to Medium (Within tool hardness) | Shafts, flanges, sprockets, shaft sleeves, threaded parts, pulleys |
| Wire EDM | Electrical discharge erosion removes material along a programmed contour | Complex profiles, through-holes, narrow slots, shaped holes (requiring through-access) | Rough cut: ±0.01 mm; finish cut: ±0.002–0.005 mm |
Rough cut: Ra 1.6–3.2 μm; finish cut: Ra 0.4–0.8 μm |
No limitation (quenched steel, carbide, and other hard conductive materials) | Punches and dies, plastic mold inserts, irregular profiles, flower-shaped holes, template grooves, precision inserts |
| Grinding | Abrasive wheel removes material at high speed with minimal cutting depth | External diameters, internal bores, flat surfaces, guide rails, formed surfaces | IT5~IT6 | Ra 0.2–0.8 μm; mirror finish can reach Ra 0.02 μm | Highest (hardened steel, cemented carbide, ceramics) | Spindles, precision shaft journals, punch cores, mold-forming surfaces, gauges, cutting tools, precision components |
Materials for Automation Parts
Quick material selection based on part location and function; the recommended grades are for reference, with room for engineering adjustments.
Frames · Base Plates · Machine Beds:
Recommended materials: 6061-T6 aluminum / Q235 steel / cast iron
Prioritize strength and rigidity. Cast iron offers excellent vibration damping, while aluminum alloys provide significant weight reduction.
Transmission Shafts · Guide Rails · Flanges
Recommended materials: 45# steel / 40Cr / SUS304
Balance strength and toughness. Use SUS304 for enhanced corrosion resistance where required.
Gears · Punches · Wear-Resistant Tooling
Recommended materials: SKD11 / DC53 / tool steel
Prioritize hardness (HRC58+) and wear resistance for extended service life. For high-speed punching, consider DC53 for improved toughness.
Corrosion-Resistant · Cleanroom · Contact Components
Recommended materials: 304 / 316 / 17-4PH stainless steel
For food and pharmaceutical machinery, prioritize 304/316 stainless steel. For high-strength requirements, consider 17-4PH.
Lightweight · High-Speed Moving Components
Recommended materials: 7075-T6 / 6061-T6 aluminum
For robotic arms and high-speed motion, prioritize strength-to-weight ratio to reduce inertia and improve responsiveness.
Liners · Gears · Insulating Components
Recommended materials: POM / PA66 / PTFE
Self-lubricating bushings, gears, and low-friction components. PTFE is suitable for chemical-resistant applications.
Seals · High-Temperature Environments
Recommended materials: NBR / FKM / PEEK
Select NBR for general oil resistance, FKM for high-temperature and chemical resistance, and PEEK for demanding structural applications.
Precision Cutting Tools · Mold Inserts
Recommended materials: Cemented carbide / ceramics
Ultra-high hardness and wear resistance ensure cutting-edge durability and long-term dimensional stability.
Material Selection Principles: High load-bearing requirements → Steel/aluminum; wear resistance → Hardened steel/cemented carbide/POM; corrosion resistance → Stainless steel/anodized aluminum; lightweight and high-speed applications → 7075 aluminum; electrical insulation and low friction → Engineering plastics.
Our In-House Machining Capabilities
Our precision machining services produce custom components via CNC milling, conventional machining and Wire EDM. We deliver prototypes, small batches and ongoing production, built to your drawings and technical specs.
Milling and Turning Equipment
Our shop houses milling machines, manual lathes and CNC lathes to make custom mechanical components. We perform milling, turning, drilling and other machining operations to suit parts of varying shapes and tolerance needs.
We build custom parts directly from your drawings, handling both prototype builds and small-batch runs.
CNC Machining Centers
Our CNC machining centers fabricate custom components with precision surfaces, holes, pockets and complex shapes. We commonly make mounting plates, brackets, fixture parts and other mechanical parts for industrial machinery.
Wire EDM Machining
Wire EDM lets us produce intricate outlines, narrow slots and complex details on any electrically conductive material. We often pair it with CNC machining for parts where standard milling or turning cannot meet design requirements
Start customizing your project now
Why do automated systems require custom-made precision parts?
Standard parts often fail to meet requirements for precision and fit, while general-purpose machining processes struggle to ensure consistency and efficiency; compared to typical machining applications, the automation industry demands significantly higher standards for manufacturing.
Strict Precision Requirements
Positioning, transmission, and assembly precision directly affect equipment cycle times and product yield rates; tolerances for critical dimensions often reach ±0.005 mm, while geometric tolerances-such as flatness, coaxiality, parallelism, and perpendicularity-must be strictly controlled.
Complex Structural Designs
Irregular surfaces, deep cavities, micro-holes, and multi-face features require single-setup machining whenever possible, as repeated repositioning can introduce cumulative errors.
High Batch Consistency
Automation production lines demand consistent dimensional stability. Even minor variations can lead to assembly interference, abnormal noise, or reduced service life.
Flexible Lead Time Requirements
Automation manufacturers require rapid prototyping, stable mass production, and fast response to urgent orders.
Material & Process Compatibility
Automation components may involve aluminum alloys, stainless steel, carbon steel, copper, and engineering plastics. Each material requires optimized cutting parameters, tooling strategies, heat treatment, and surface finishing processes to prevent deformation, vibration, or dimensional drift.
With advanced process planning, reliable equipment, strict quality control, and a closed-loop manufacturing system, we ensure every automation component fits precisely, operates reliably, and delivers long-term durability.
Dahong Precision: Your External Precision Manufacturing Center
Aligned with industry trends, Dahong Precision positions itself as a precision manufacturing partner for automation equipment manufacturers.
Stable machining accuracy
Transparent production processes
Fast response times
Scalable manufacturing capacity
Advantages & Considerations
Advantages
Factory Direct Supply
Eliminates intermediary costs and ensures transparent pricing.
No Minimum Order Quantity
Rapid response to urgent orders and prototyping needs.
High Production Capacity
Capable of handling high-mix, low-volume manufacturing efficiently.
Consideration
International Shipping
Parts are shipped from China; international air freight typically requires 1–5 days.
Facing the industry's demands for high-mix, low-volume, high-precision, and fast-delivery production, our no-MOQ policy, factory-direct pricing, and dedicated engineering support make us a reliable long-term partner.
FAQ
01.What surface finishing options are available for automation components?
We offer a wide range of finishing processes, including but not limited to:
Anodizing (clear, black, colored)
Hard anodizing
Zinc plating / Nickel plating
Chrome plating
Electroless nickel plating
Black oxide
Passivation
Polishing
Sandblasting
Brushing
Powder coating
Surface treatment requirements can be specified in your drawings, or our engineers can recommend the most suitable option based on the application.
02.How can machining costs for automation components be reduced?
Cost optimization can be achieved by:
Simplifying part design and avoiding unnecessary complexity
Selecting appropriate materials instead of over-specifying high-cost alloys
Planning production quantities to minimize frequent single-piece manufacturing
03.How is quality ensured after machining?
Quality assurance relies on a comprehensive inspection system, including:
CMM (Coordinate Measuring Machine) inspection for full dimensional verification
Surface roughness measurement
Statistical analysis of critical dimensions
04.What is the process from order placement to delivery?
Upload drawings and confirm the quotation
Conduct DFM (Design for Manufacturability) analysis and finalize the manufacturing plan
Production scheduling and machining (as fast as 3 days)
Full inspection and inspection report generation
Packaging and shipping (1–5 days international air freight)
Production progress can be tracked throughout the process.
05.What if I am not satisfied with the parts received?
Dahong Precision follows a quality-first policy.
If any parts are found to be non-conforming due to our responsibility, we will remake the parts free of charge or provide a full refund.
We also recommend sample verification before mass production to ensure full compliance with your requirements.
