
What Are CNC Injection Molded Plastic Parts?
CNC injection molded plastic parts are created using a dual-process approach:
- CNC Machining: This method is used to create precise molds or tooling. CNC (Computer Numerical Control) machining ensures that the molds used in injection molding are crafted with unparalleled precision, enabling the production of parts with tight tolerances and intricate details.
- Injection Molding: The pre-designed molds are then used in the injection molding process, where melted plastic is injected into the mold cavity under high pressure. The plastic solidifies to form parts that exactly replicate the mold’s design.
Advantages of CNC Injection Molded Plastic Parts
1.High Precision and Accuracy
- CNC machining ensures that molds are crafted to exact specifications, resulting in plastic parts with tight tolerances and consistent dimensions. This precision is crucial for industries like aerospace, automotive, and electronics, where even minor deviations can impact functionality.
2.Cost-Effective for High-Volume Production
- Once the mold is created, the injection molding process is highly efficient, making it a cost-effective solution for large production runs of plastic parts.
3.Design Flexibility
- The process allows for the creation of complex geometries, intricate designs, and detailed textures. Whether you need functional components or aesthetically pleasing parts, CNC injection molding offers limitless possibilities.
4.Material Versatility
- A wide range of plastics, including ABS, polycarbonate, polypropylene, and nylon, can be used, making the process suitable for diverse applications.
5.Durability and Strength
- Plastic parts produced through this method are known for their durability and strength, ensuring reliable performance in demanding environments.
6.Scalability
- The combination of CNC precision and injection molding efficiency allows for seamless scaling from prototypes to large-volume production.
Applications of CNC Injection Molded Plastic Parts
1.Automotive Industry
- Dashboard panels
- Engine covers
- Clips, brackets, and connectors
2.Electronics
- Housings for electronic devices
- Cable management components
- Heat-resistant parts for circuit boards
3.Medical Devices
- Surgical instrument components
- Disposable medical products
- Diagnostic equipment housings
4.Consumer Goods
- Plastic enclosures for appliances
- Durable parts for sporting goods
- Custom decorative elements
5.Aerospace and Defense
- Lightweight components for aircraft
- High-performance plastic parts for critical systems
6.Industrial Equipment
- Gears, pulleys, and structural supports
- Protective covers and guards
How CNC Injection Molded Plastic Parts are Made
1.Design Phase
- Engineers create a detailed CAD (Computer-Aided Design) model of the desired part, ensuring all specifications and tolerances are included.
2.CNC Machining of the Mold
- CNC machining is used to craft the mold, ensuring precision and durability. The mold design determines the shape, texture, and dimensions of the final plastic part.
3.Injection Molding
- Melted plastic is injected into the mold cavity under high pressure. The material cools and solidifies to form the desired part.
4.Post-Processing
- Depending on the application, parts may undergo additional processes such as trimming, polishing, or painting to achieve the final finish.
Benefits of Professional CNC Injection Molding Services
1.Advanced Equipment
- State-of-the-art CNC machining and injection molding machines guarantee precision, consistency, and efficiency.
2.Expertise in Material Selection
- Professionals help choose the best plastic material for your application, balancing performance, cost, and environmental considerations.
3.Custom Solutions
- Professional services offer complete customization, from mold design to part finishing, ensuring that your specific needs are met.
4.Rigorous Quality Control
- Every part undergoes strict quality inspections to ensure it meets industry standards and customer specifications.
5.Fast Turnaround
- Efficient processes and modern equipment allow for rapid prototyping and high-volume production with minimal lead times.
6.Cost Efficiency
- Professional services optimize production processes to minimize waste, reduce costs, and deliver maximum value.
Conclusion
CNC injection molded plastic parts are revolutionizing manufacturing with their unmatched precision, efficiency, and versatility. Whether you need complex geometries, durable components, or large production runs, this process delivers high-quality results tailored to your specifications.

| CNC Turning, CNC Milling, Laser Cutting, Bending, Spining, Wire Cutting, Stamping, Electric Discharge Machining (EDM), Injection Molding,3D Printing,Rapid Prototype,Moulds etc. |
| Aluminum: 2000 series, 6000 series, 7075, 5052, etc. |
Stainlesss steel: SUS303, SUS304, SS316, SS316L, 17-4PH, etc. |
Steel: 1214L/1215/1045/4140/SCM440/40CrMo, etc. |
Brass: 260, C360, H59, H60, H62, H63, H65, H68, H70, Bronze, Copper |
Titanium: Grade F1-F5 |
Plastic: Acetal/POM/PA/Nylon/PC/PMMA/PVC/PU/Acrylic/ABS/PTFE/PEEK etc. |
| Anodized, Bead Blasted, Silk Screen, PVD Plating, Zinc/Nickl/Chrome/Titanium Plating, Brushing, Painting, Powder Coated, Passivation, Electrophoresis, Electro Polishing, Knurl, Laser/Etch/Engrave etc. |
| ±0.002 ~ ±0.005mm |
| Min Ra 0.1~3.2 |
CERTIFICATE | ISO9001:2015,AS9100D,ISO13485:2016,ISO45001:2018,IATF16949:2016,ISO14001:2015,ROSH,CE etc. |




FAQ
1. Are you a manufacturer or a trading company?
We are a factory located in Shenzhen, China, with 20 years of rich experience,
covering 6000 square meters. Complete facilities, including 3D quality inspection equipment, ERP system and 40 machines. If necessary, we can provide you with material certificates, sample quality inspection and other reports.
2. How to get a quote?
Detailed drawings (PDF/STEP/IGS/DWG...), including quality, delivery date, materials, quality, quantity, surface treatment and other information.
3. Can I get a quotation without drawings?
Can your engineering team draw for my creativity? Of course, we are also glad to receive your samples, pictures or detailed size drafts for accurate quotation.
4. Can you provide samples before mass production?
Of course, the sample fee is necessary. If possible, it will be returned during mass production.
5. What is the delivery date?
Generally, the sample lasts for 1-2 weeks and the batch production lasts for 3-4 weeks.
6. How do you control quality?
(1) Material Inspection - Check material surfaces and approximate dimensions.
(2) First inspection of production - ensure
critical dimensions in mass production.
(3) Sampling inspection - check the quality before delivery to the warehouse.
(4) Preshipment inspection - 100% inspection by QC assistant before shipment.
7. After sales service team
If you have any problems after receiving the product, you can provide feedback through voice call, video conference, email, etc. within one month. Our team will provide you with solutions within a week.