CNC Grinding
Our fine CNC grinding machines and skilled technicians ensure that every part we produce has an excellent surface finish and strict tolerances.
CNC Grinding Capabilities
Surface Grinding
Surface Grinding is used to machining parts with smooth, flat surfaces. A rotating grinding wheel grinds the surface of the parts to remove material and achieve precise finishes. This method is typically used to manufacture parts with tight tolerances and flat surfaces.
Cylindrical Grinding
Cylindrical grinding involves grinding cylindrical or rod-shaped parts to achieve precise dimensions and surface finishes. In cylindrical grinding, the part involved is rotated at a specified diameter while the grinding wheel is moved along its length, removing material to form a cylinder.
Advantages of CNC Grinding
CNC grinding excels in subtractive manufacturing with unmatched accuracy, repeatability, and surface finish, ensuring consistent excellence for high-performance components across various industries. CNC grinding offers micron-level precision, repeatable quality, and versatile capabilities, crucial for part performance and production success.
Exceptional Dimensional Accuracy
Attains tight tolerances down to ±0.001 mm, meeting critical application requirements through advanced multi-axis control and in-process gauging.
Superior Repeatability for Batch Production
Ensures each workpiece maintains the same quality level, from the first to the thousandth, reducing waste and rework.
Outstanding Surface Finish
Delivers mirror-like finishes as fine as Ra 0.2 μm, ideal for components requiring low friction, high sealing performance, or tight mating interfaces.
Flexibility Across Part Shapes & Materials
Adapts to complex geometries and hard-to-machine materials, including tool steels, ceramics, and superalloys.
Integration with Other Processes
Compatible with turning, milling, and EDM, serving as a final precision step or an intermediate operation in hybrid manufacturing.
Ideal for High-Precision, Critical Industries
Essential in aerospace, medical, optical, and defense sectors, meeting the strictest standards for accuracy and reliability.
CNC Grinding Tolerances
Our CNC grinding processes ensure tight tolerances on key part features, maintaining dimensional integrity and superior fit for assemblies.
| Feature | Standard Tolerance | Tightest Achievable Tolerance |
| Outer Diameter (OD) | ±0.005 mm | ±0.001 mm |
| Inner Diameter (ID) | ±0.005 mm | ±0.001 mm |
| Flatness | 0.01 mm | 0.002 mm |
| Parallelism | 0.01 mm | 0.003 mm |
| Cylindricity | 0.005 mm | 0.002 mm |
| Roundness | 0.003 mm | 0.001 mm |
| Surface Finish (Ra) | ≤ 0.8 μm | ≤ 0.2 μm |
| Length (up to 100 mm) | ±0.01 mm | ±0.005 mm |
| Angle Tolerance | ±0.1° | ±0.01° |
For CNC grinding processes, Taidexing typically works to tighter tolerances than ISO 2768, depending on the material and application requirements. While ISO 2768-m or f may be used for non-critical dimensions, we commonly apply custom precision tolerances for ground surfaces to meet high-accuracy demands.
Industries Served by CNC Grinding
Taidexing’s CNC grinding services deliver ultra-fine surface finishes, exceptional dimensional accuracy, and tight geometric control for parts that demand high precision. Using advanced grinding equipment and process controls, we support prototype and production requirements across demanding engineering industries.
Aluminum Alloys
Stainless Steel
Carbon & Alloy Steel
Copper & Brass
Titanium Alloys
Engineering Plastics
High-temperature Alloys
Specialty Materials
Aluminum Alloys
Common Grades： 6061-T6, 7075-T6, 5052, 2024
Key Applications: Equipment housings, heat sinks, structural brackets, automation frames Benefits:
• Supports anodizing, sandblasting and various surface finishes
• Low density for lightweight structural designs
• Stable precision for prototype & mass production
Stainless Steel
Common Grades： 304, 316L, 17-4PH
Key Applications: Medical components, fluid valves, fixture parts, food-grade structures Benefits:
• Superior corrosion resistance
• Available for passivation, electro-polishing treatment
• Maintains stability under harsh working conditions
Carbon & Alloy Steel
Common Grades： 45# Steel, 4140 Alloy Steel, S136
Key Applications: Transmission shafts, gear parts, mold inserts, heavy-load fixtures Benefits:
• Supports quenching, tempering and other heat treatment
• Excellent tensile strength for heavy-load scenarios
Copper & Brass
Common Grades： C11000 Pure Copper, H59 Brass, C36000
Key Applications: Conductive terminals, heat conduction modules, threaded fittings Benefits:
• Excellent ductility and chip removal performance
• Plating and polishing available for enhanced surface performance
Titanium Alloys
Common Grades： Ti-6Al-4V
Key Applications: Medical equipment, aerospace components, precision marine parts
Benefits:
• Low density & high strength-to-weight ratio
• Outstanding resistance to chemical corrosion
Engineering Plastics
Common Grades： PEEK, POM, PA66, PTFE, PET
Key Applications: Insulation components, wear-resistant bushings, non-magnetic structural parts
Benefits:
• Light weight, corrosion-free and self-lubricating
• No surface rust, suitable for low-friction assembly
High-temperature Alloys
Common Grades： Inconel 718, Hastelloy
Key Applications: Energy equipment, high-temperature sensor structural parts
Benefits:
• Resists deformation and oxidation under extreme heat
• Reliable long service life under high-temperature working conditions
Specialty Materials
Common Options： Industrial Ceramic, Composite Materials
Key Applications: Semiconductor fixtures, special insulation components
Benefits:
• Customized processing for special working conditions
• Unique insulation, wear or high-temperature properties
ISO Certified Quality You Can Trust
We are committed to upholding the highest industry standards. To ensure quality and excellence, we have proactively obtained renowned certifications from trusted organizations.
Why Choose Taidexing
Fast
According to your functionality and quantity requirements, develop the optimal manufacturing process, combined with efficient self-owned factories to achieve optimal performance and cost.
Precision
Tolerances as tight as 0.005mm, rich experience with advanced 5-axis CNC machines, mill-turn machines, and precision grinding machines, meets a variety of tolerance requirements.
Cost-effective
According to your functionality and quantity requirements, develop the optimal manufacturing process, combined with efficient self-owned factories to achieve optimal performance and cost.
One-stop Solution
From CNC machining to aluminum extrusion and heat treatment to surface finishing, from prototyping to mass production, easily and efficiently customize various parts.
Strict Quality Control
ISO 9001 quality management system certification, equipped with various quality inspection instruments including Zeiss coordinate, process and results can be controlled.
Engineering & DFM Support
Our engineers collaborate from the start — optimizing designs for manufacturability, improving strength-to-weight ratios, and reducing cost through smarter machining strategies.
CNC Grinding Resources
What is CNC Grinding? 5 Key Benefits for ±1μm Accuracy
2026-07-15
How 2D & 3D Drawings Affect CNC Machining Cost and Lead Time
2026-07-15
FastPreci vs Xometry: Who Provides Best Manufacturing Solution?
2026-07-15
CNC Metal Lathe: Achieve ±0.003 MM Precision on Custom Parts
2026-07-15
FAQs
Can you provide surface finish reports and inspection certificates?
Absolutely. Upon request, we can provide:
Surface roughness reports (e.g. Ra value inspection)
CMM inspection reports
Material certificates
Dimensional inspection reports
We are committed to full transparency and traceability for critical applications.
Do you support both low-volume and high-volume CNC grinding projects?
Yes. Whether you need a single prototype or thousands of production parts, we can scale our CNC grinding operations accordingly. We often support customers from the early prototyping phase through to full-scale manufacturing.
Which materials can be CNC ground at FastPreci?
We support a wide range of materials for CNC grinding, including:
Metals: Tool steel, stainless steel, hardened steel, aluminum, titanium, brass
Hard-to-machine alloys: Inconel, tungsten, molybdenum
Specials: Ceramics (limited to external grinding), carbide, and more
If you’re unsure about your material’s grindability, feel free to send us a sample or technical spec.
How fast can you deliver CNC ground parts for prototypes or urgent orders?
For prototype parts or urgent projects, our lead time can be as fast as 3–7 working days, depending on complexity and quantity. We also offer expedited services—please consult us with your delivery deadline for a tailored production plan.
What is the tightest tolerance you can achieve with CNC grinding?
We can achieve tolerances as tight as ±0.001 mm, depending on part geometry, material, and grinding type. For parts with ultra-high precision requirements, we recommend providing detailed drawings or CAD models so our engineers can assess the best approach.
How to Work With US
Upload Design
Submit your 3D drawings, processes, materials, quantities and other technical requirements.
DFM Analysis and Quotation
We will analyze the manufacturing feasibility based on your design and requirements and provide a report and quotation within hours.
Order Confirmation
Issue a purchase order or make a payment after DFM and quotation confirmation.
Parts Shipping
We will update you on the progress during the production and send it out after quality check, as soon as 3 days.
Contact Information
Email: liu.ji@cq-taidexing.com
Address: No. 2 Xishan Road, Biquan Subdistrict, Bishan District, Chongqing City
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