Grinding Machining | Precision Surface & Cylindrical Grinding
Grinding machining is a precision finishing process used to achieve tight tolerances and smooth surface finishes that standard CNC machining cannot deliver. At 6 CNC, we provide grinding machining for parts that require high dimensional accuracy and stable surface quality.
We support customers who need final finishing after CNC machining. If your part must meet strict tolerance or surface requirements, grinding is often the most reliable solution.
- One-stop solution (machining + finishing)
- Fast turnaround & reliable delivery
- Competitive pricing for low-volume production
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industry leaders
When CNC Machining Is Not Enough
CNC machining can produce most features, but it has limits. Tool deflection, cutting forces, and material behavior can affect final accuracy.
Grinding removes a small amount of material with a high-precision abrasive wheel. This allows tighter control over dimensions and surface finish.
If your part requires close tolerances, flatness, or smooth contact surfaces, grinding helps you meet those requirements.
Grinding Capability for Precision Parts
We provide multiple grinding processes to match different part geometries and requirements:
- Surface grinding for flatness and parallelism
- Internal grinding (ID) for precise inner diameters
- External grinding (OD) for shafts and cylindrical features
- Centerless grinding for high-volume cylindrical parts
6 CNC grinding capability: surface finish up to Ra 1.6 .
Grinding is typically used as a finishing step to improve both accuracy and performance.
Applications for Grinding Machining
Grinding is used across industries where precision and surface quality are critical.
We support:
- Precision shafts and bearing surfaces
- Sealing surfaces and mating components
- Flat components requiring tight parallelism
- High-precision mechanical parts
These parts often require consistent contact, smooth motion, and long service life.
Materials for Grinding
Grinding can be applied to a wide range of materials, especially those that are difficult to machine with standard cutting tools.
We process:
- Hardened steel
- Stainless steel
- Tool steel
- Aluminum (for surface finishing applications)
Hard materials often require grinding to achieve final tolerances and surface finish.
Grinding as a Finishing Process
Grinding is typically used after CNC machining. The part is first machined close to final dimensions, then finished with grinding to achieve precise tolerances.
This approach improves efficiency. CNC removes most material quickly, while grinding refines the final dimensions.
By combining both processes, you achieve better accuracy without increasing overall cost significantly.
How Grinding Improves Part Performance
Surface quality affects how parts function. Rough surfaces increase friction, wear, and heat. Grinding produces smoother surfaces, which improves sealing, reduces friction, and extends component life. This is critical for parts that move, rotate, or require tight contact. Dimensional accuracy also improves. Grinding allows fine adjustments that CNC machining alone cannot achieve.
Quality Control for Ground Parts
Grinding requires strict process control. Small errors can affect the entire part. We use inspection systems to verify dimensions, surface finish, and geometry. This ensures that ground parts meet your specifications. By controlling both machining and finishing processes, we maintain consistent quality across all parts.
Lead Time and Production Flexibility
Grinding adds an additional process step, but it often reduces overall risk. Parts that meet tolerance the first time avoid rework and delays. We integrate grinding into our machining workflow to maintain efficient lead times. Our Shenzhen location supports fast global delivery .
A Grinding Machining Partner That Solves Precision Challenges
Grinding is not just a finishing step. It is a solution for precision challenges. We review your design and machining requirements to determine where grinding is needed. This helps you avoid unnecessary cost while ensuring critical surfaces meet performance requirements.
Start Your Grinding Machining Project
If your part requires tight tolerances or superior surface finish, grinding machining is the right solution.
Upload your design files, and we will review your requirements and provide a clear quotation.
FAQ About Grinding Machining
What is grinding machining used for?
Grinding machining is used to achieve tight tolerances and smooth surface finishes that cannot be achieved with standard CNC machining.
When should I use grinding instead of CNC machining?
Grinding is used when parts require high accuracy, flatness, or surface quality beyond CNC capabilities.
What types of grinding do you offer?
We provide surface grinding, internal (ID) grinding, external (OD) grinding, and centerless grinding.
What surface finish can you achieve?
6 CNC surface finish capability: up to Ra 1.6
Can grinding be used for production?
Yes. Grinding can be applied to both prototypes and production parts, especially where precision is critical.