Precision CNC Grinding Services
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, FastPreci 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
CNC grinding is crucial for creating ultra-precise components with tight tolerances and superior surface finishes, widely used in industries like industrial automation,robotics, medical devices, and consumer electronics. CNC grinding is vital in industries requiring precision, surface finish, and wear resistance. CNC grinding ensures optimal quality and longevity for high-performance automotive shafts, ultra-precise medical tools, or durable industrial components. FastPreci’s grinding services deliver consistent, high-precision results across demanding applications. Key industries served by CNC Grinding include:
Industrial Automation
CNC grinding plays a pivotal role in the fabrication of precision components, which are indispensable for the seamless functioning of automated systems. It affords unparalleled dimensional precision and surface finish, thereby enhancing the performance of critical machine parts employed in factory automation.
Key Applications:
Guide rails, Linear bearing shafts, Precision spacers, Wear-resistant bushings
Benefits:
- Exceptional dimensional stability under continuous motion
- Superior surface finish for reduced wear and longer part life
- High precision fit for motion-critical assemblies
Robotics
Robotic systems necessitate the incorporation of lightweight, yet high-precision components within joints, actuators, and movement control mechanisms. The utilization of CNC grinding is pivotal in achieving the fine tolerances and smooth surfaces requisite for ensuring responsive, low-friction performance.
Key Applications:
Robot joint pins, Servo motor shafts, End-effector parts, Precision gear blanks
Benefits:
- Ultra-tight tolerances for smooth robotic motion
- Consistent quality for repeatable robotic performance
- Support for complex geometries and small batch runs
Medical Devices
CNC grinding is pivotal in the fabrication of medical devices, where it facilitates the creation of ultra-precise, biocompatible components. This process guarantees adherence to stringent tolerances and delivers impeccable surface finishes, thereby satisfying both regulatory stipulations and functional imperatives.
Key Applications:
Surgical tool components, Orthopedic pins and rods, Implant-grade shafts, Valve seats
Benefits:
- Micro-level precision for critical medical applications
- Compatibility with stainless steel, titanium, and cobalt-chrome
- Cleanroom-ready surface finishes for sterilization
Consumer Electronics
CNC grinding is particularly adept at producing high-precision metal components with cosmetic-grade finishes, making it an excellent choice for smartphones, laptops, and other high-end electronics. This method is not only ideal for crafting functional parts but also ensures they meet stringent aesthetic standards.
Key Applications:
Camera housings, Button shafts, Connector sleeves, Heat dissipation components
Benefits:
- Smooth surface finish for aesthetic appeal and tactile quality
- Tight tolerances for compact assemblies
- Scalable production for consumer product launches
Precision Instruments
Precision instruments require mechanically perfect components to maintain measurement integrity and calibration stability. CNC grinding ensures the high consistency and micron-level accuracy demanded by such systems.
Key Applications:
Micrometer spindles, Optical mounts, Dial indicator shafts, Positioning pins
Benefits:
- Sub-micron precision for critical measuring tools
- Superior roundness and concentricity
- Stability over temperature and time
New Energy Equipment
In industries such as battery production, wind energy, and fuel cell technology, CNC grinding plays a pivotal role in producing components that are not only highly accurate but also exhibit exceptional resistance to wear, ensuring optimal performance under rigorous operating conditions.
Key Applications:
Battery mold inserts, Rotor shafts, Fuel cell plate blanks, Motor end caps
Benefits:
- High wear resistance for extended service life
- Compatibility with hardened steels and exotic alloys
- Precision control for emerging energy technologies
Why Choose FastPreci
Fast
Lead time as fast as 3 days, accelerating your R&D and production progress, easily meet tight deadlines.
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.
Dedicated Service
A dedicated account manager is available to provide fast response, individualized service, full support, and easy management of complex projects.
CNC Grinding Resources
