CNC Grinding Services
We offer high-precision CNC grinding with exceptional surface finishes for metals, ceramics, and plastics,alloys. From tight tolerances to precision finishes, our grinding solutions are built to exceed industry standards—supporting everything from rapid prototyping to low- and high-volume production. Contact us now for a free.
One-Stop CNC Grinding Solutions
We provide high-precision CNC grinding services with tolerances down to ±0.00005″ and surface finishes approaching mirror quality. Our capabilities include cylindrical (OD up to 13″, 69″ between centers), internal (ID 0.25″–10″), and surface grinding, handling straight, tapered, and complex geometries with ±0.0001″ accuracy.
We grind alloy steels, hardened superalloys, duplex stainless steel, high-nickel alloys, bronze, ceramics, and engineering plastics—ideal for aerospace, medical, automotive, and electronics applications. Advanced CAD programming ensures repeatability and consistency across prototypes and production runs.
ISO 9001 certified, we use CMM inspection, profilometers, and precision measurement systems to guarantee dimensional and geometric accuracy. Beyond grinding, we offer polishing, heat treatment, plating, coating, and dynamic balancing for complete, production-ready parts.
From micro ultra-precision components to large industrial parts, we deliver tight tolerances, flawless finishes, and dependable quality—all in one place.
CNC Precision Grinding Capabilities
Our facility is equipped with advanced CNC precision grinding machines, enabling highly specialized cylindrical grinding operations from 0.1mm to 300mm in diameter and lengths up to 1200mm. We achieve extremely tight tolerances, superior surface finishes, and precise geometric control for complex shapes and demanding specifications.
ID / OD Grinding Tolerance: ±0.001mm (±0.00005″)
Roundness: ±0.005mm (±0.0002″)
Cylindricity: ±0.005mm (±0.0002″)
Surface Finish: down to 0.005 Ra
Material Hardness Capability: up to HRA 94.5
We support centerless, internal, external, and surface grinding for titanium alloys, stainless steel, tool steel, hardened alloys, ceramics, and engineering plastics, serving aerospace, medical, and high-precision industrial applications.
Xtproto Precision CNC Grinding Services
Xtproto’s precision grinding experts select the optimal CNC method for each part, delivering ultra-tight tolerances, mirror-quality finishes, and exact compliance with your specifications. Engineered for aerospace, automotive, medical, and industrial applications, our high-precision grinding solutions provide consistent, production-ready results with fast turnaround and one-stop manufacturing convenience.
Cylindrical / OD Grinding
Surface Grinding
Internal / ID Grinding
Centerless Grinding
Polishing / Finishing
Profile Grinding
Honing / Superfinishing
Deep Hole Grinding
Micro / Precision Hole Grinding
CNC Grinding Tolerances
Our CNC grinding facility handles parts up to 80″ × 32″ × 25″ (2000 × 800 × 600 mm), delivering precision grinding for metals, hardened alloys, tool steels, and select ceramics. Standard tolerances maintain flatness and dimensions within ±0.00004″ (±0.001 mm), while precision setups can reach ±0.00002″ (±0.0005 mm). We achieve superior surface finishes down to Ra 0.05–0.1, supporting flat, cylindrical, and centerless grinding. All edges are lightly deburred unless specified, and typical lead times are 1–7 business days depending on complexity. Our services cater to aerospace, medical, and high-precision industrial applications, ensuring every component meets demanding specifications.
Precision Cylindrical Grinding Materials
At Xtproto, we provide high-precision cylindrical grinding for prototypes, small batches, and large-scale production. Our experts select the right material for your application, ensuring tight tolerances and excellent surface finishes across a wide range of hardnesses and types.
Material & Examples | Hardness / Key Applications |
Metals – Carbon Steel, Alloy Steel, Tool Steel, Stainless Steel (304, 316, 17-4PH), Aluminum, Copper, Brass, Bronze, Nickel, Titanium, Tungsten, Tantalum, Molybdenum, Cobalt, Gold, Silver, Platinum, Magnesium, Zirconium | Mohs 2–9; High-strength structural parts, aerospace, medical, automotive, electrical components, high-wear tools |
Ceramics & Composites – Aluminum Oxide, Silicon Nitride, Advanced Composites | Mohs 3–9; Wear-resistant, high-temperature, lightweight, corrosion-resistant components |
Plastics & Elastomers – PEEK, PTFE, PVC, PC, ABS, Natural Rubber, Silicone | Mohs 0.5–3; Lightweight, chemical-resistant, insulating parts, seals, gaskets, vibration dampening |
From soft metals to ultra-hard alloys, advanced ceramics, and engineering plastics, Xtproto’s precision cylindrical grinding delivers ±0.001” tolerance and mirror-like surface finishes for aerospace, medical, automotive, and high-precision industrial applications.
CNC Grinding Surface Finishing
At Xtproto, our precision CNC ground parts can receive advanced surface finishing to meet tight tolerances, smooth finishes, and functional requirements — from prototypes to full production.
| Process | Purpose / Benefits |
| As-Machined | Standard CNC finish; high accuracy, typical Ra 1.6 µm or better |
| Polishing | Mirror-like smooth surfaces for aesthetics and performance (Ra 0.008 µm) |
| Anodizing / Plating / Coating | Corrosion and wear resistance; chrome, TiN, TiCN/TiAlN, DLC options |
| Black Oxide / Chemical Finish | Durable, low-reflection surfaces, maintains dimensions |
| Sand / Abrasive Blasting | Textured or matte surfaces for function or aesthetics |
| Deburring & Cleaning | Removes burrs and residues for assembly-ready parts |
| Heat Treatment / Hardening | Optimizes metal strength, wear resistance |
| Dimensional Inspection | CMMs, optical profilometers, calipers, height/depth gauges, gauge blocks, granite plates, rotary tables for full traceability |
From basic grinding to advanced surface finishing and coatings, Xtproto delivers zero-defect, ISO 9001:2015 certified parts with strict tolerances and exceptional finishes for aerospace, medical, automotive, and high-precision industrial applications.
Our Commitment To Quality
At Xtproto, precision and consistency drive everything we do. From custom component design and prototyping to CNC grinding and milling, we ensure every part meets tight geometric tolerances and superior surface finishes.
We follow ISO 9001:2015 standards, with multi-step inspections throughout production to guarantee zero-defect shipments. Our Quality Assurance includes:
- 3D Coordinate Measuring Machines (CMMs)for exact dimensions
- Automated and manual checks for each component
- Material certification, traceability, and statistical process control
- Optical profilometers, micrometers, calipers, height gauges, depth indicators, bore gauges, squares, gauge blocks, granite plates, and rotary tables
Whether it’s complex joints or high-precision aerospace, medical, or automotive parts, Xtproto delivers reliability, precision, and on-time delivery every time.
Parts We Machined
Precision CNC Grinding Service Provider
Xtproto’s state-of-the-art CNC precision grinding facility leverages over 20 years of machining experience and a skilled engineering team to deliver customized solutions for aerospace, medical, defense, automotive, and high-performance industrial components. We handle parts from micro Ø0.1mm to large Ø300mm and lengths up to 1200mm, achieving ultra-tight tolerances, superior surface finishes, and complex geometries. Using centerless, cylindrical, ID/OD, surface, profile grinding, and honing combined with integrated CNC machining and value-added services, Xtproto provides a one-stop manufacturing solution that ensures on-time delivery, consistent quality, and long-term partnership.
Ready to Take Your Project to the Next Level?
Discover precision, efficiency, and quality like never before. Our solutions are tailored to meet your unique needs and help you achieve outstanding results.
What is CNC Grinding?
CNC grinding is a precision machining process that combines computer numerical control (CNC) with advanced grinding techniques to achieve high-accuracy shaping and finishing of parts. Using CNC systems to guide the grinding wheel, material is removed precisely from metals, ceramics, plastics, and composite materials, ensuring consistent tolerances and superior surface quality. This process supports a variety of operations, from surface and flat grinding to cylindrical and complex profile grinding, each requiring specific machine setups and programming. As a critical part of modern CNC machining, CNC grinding delivers repeatable results, high efficiency, and the precision needed for demanding industries like aerospace, medical, and automotive.
Advantages of CNC Grinding
CNC grinding combines high precision and automation to meet the demands of complex parts and multi-material machining. Its stability, repeatability, and efficiency make it ideal for both custom and high-volume production.
Key Advantages:
- High Precision:Tolerances up to ±0.025 µm ensure consistent part quality.
- Stable & Repeatable:Automated control maintains uniform results across batches.
- Superior Surface Finish:Achieves Ra 0.05 µm, reducing post-processing needs.
- Complex Geometries:Easily machines shapes difficult or impossible manually.
- Multi-Material Capability:Handles metals, plastics, and ceramics with precision.
- Customizable & Flexible:Programmable for unique designs and production volumes.
- Efficient & Cost-Saving:Minimizes manual labor and material waste.
- Safe & Reliable:Automation reduces operator risk and improves workplace safety.
Why Work With Xtpoto？
Our CNC grinding services combine advanced machines with deep machining expertise to give you precision you can trust. We deliver tight tolerances, consistent quality, and excellent surface finishes on complex parts for a wide range of industries, from aerospace to medical and defense. With automated processes, strict inspections, and a focus on repeatability, we ensure every part meets your specifications without compromise. We handle materials from hardened steels to ceramics, support custom and high‑mix requirements, and streamline your production with reliable delivery and responsive communication. Partnering with us means getting dependable, high‑precision results and service that helps you move projects forward with confidence.
Request Your Free CNC Machining Quote Today
After receiving your drawings, our engineers will analyze your custom CNC machining parts right away. We actively work with you to clarify all details before providing a quote that is both economical and accurate.