Start Your Custom CNC Watch Case
- 60+ CNC machining centers (20+ imported from Japan) – ±0.01mm tolerance for critical movement fitting holes
- 100+ watch case projects delivered globally – Consistent surface finishing quality uniformity across batches
- Exported to 30+ countries – Leak-proof sealing surface machining after machining
- Burr-free internal threads & smooth cavities – Prevents leakage & assembly damage
- Accepting small batch orders from 50 pcs
- Reliable quality. Stable lead time. Engineering-driven support.
What is CNC Watch Case
A CNC watch case is a precision-machined enclosure produced by CNC machining processes using materials such as stainless steel, titanium, or aluminum.
CNC watch cases offer:
– High dimensional accuracy (up to ±0.01mm)
– Complex structure capability
– Excellent surface finishing quality
They are widely used in mid-to-high-end watches requiring reliable waterproof performance, precise movement fitting, and premium appearance.
CNC Watch Case Materials
We are a professional custom watch case manufacturer providing CNC machining services for stainless steel, titanium and aluminum watch cases.
The most popular material used in custom watch cases, widely used in mid-to-high-end watches.
Titanium is more challenging to machine but delivers premium performance and lightweight advantage.
6061, 6063, 7075 aluminum materials are available with custom milling service and anodizing.
It will oxidize and form a natural patina, presenting a personalized appearance. Also you can choose a clear coating.
Who We Serve
We have cooperated with many CNC watch case customers in the past 10years. From materials choosing to surface treatment suggesting, Yecheng is your first choice.
Low MOQ (50 pcs), Fast prototyping (2–3 weeks), DFM support for Kickstarter projects
High customization freedom, Complex structure machining, Fine surface finishing consistency
Stable batch production, Strict QC system, Cost optimization for bulk orders
Reliable quality & lead time, Surface roughness up to Ra 1.6μm, Full inspection reports available
CNC Watch Case Back Sealing Structure
A CNC watch case is not only an enclosure – it is a precise mechanical structure which directly influences waterproof performance, movement fitting, and long-term durability.
Through high-precision CNC turning and milling processes, we strictly control the accuracy of the bottom case threads, flatness of the contact surfaces, and surface roughness.
This ensures that the sealing ring can be evenly stressed, thereby achieving stable and reliable waterproof performance. Optimized O-ring groove design with controlled compression ratio ensures stable waterproof performance (3–10 ATM).
Support the processing of screw-down and press-fit type bottom cover structures.
Get Free DFM Feedback Before Production.
CNC Watch Case Movement Fitting Tolerance
The internal size accuracy of a CNC watch case directly determines whether the movement can be stably assembled and operated normally.
We strictly control the dimensions of the key cavities and the tolerance of the fits to ensure stability of the movement after installation, and to prevent problems such as looseness, misalignment or improper positioning of the crown.
Additionally, basic DFM suggestions can be offered to optimize the structure to enhance assembly efficiency and reliability.
Get Free DFM Feedback Before Production.
Our CNC Watch Case Machining Service
CAD / Design Review
First, you can share with us your drawings after we sign an NDA. Drawings can be in 2d or 3d.
2d drawings format: pdf, dxf, dwg
3d drawings format: x_t, stp, step, stl
CNC Machining
After providing professional suggestions from our customers, we can provide turning, milling, laser engraving and wire EDM service.
Quality Inspection
We do material inspection, first article inspection, in-process inspection and final inspection.
Get Free DFM Feedback Before Production.
What Tolerance Is Required For CNC Watch Cases?
For high-quality CNC watch cases, critical dimensions such as movement fitting holes are typically controlled within ±0.01mm.
This level of precision ensures:
– Stable movement positioning
– Accurate crown alignment
– Smooth assembly process
– Long-term durability
Lower precision (±0.02–0.03mm) may lead to assembly issues or reduced performance.
More Surface Finishes About CNC Watch Case
- Data Sheet
| Surface Finish | Visual Effect | Suitable Materials | Key Advantages | Typical Applications |
| Mirror Polishing | High-gloss, reflective, mirror-like | Stainless Steel, Titanium, Brass | Premium appearance, luxury feel | Dress watches, luxury watches |
| Brushed Finish | Fine linear texture, matte lines | Stainless Steel, Titanium | Scratch-resistant, modern industrial look | Sports watches, tool watches |
| Sandblasting | Uniform matte, fine grain texture | Aluminum, Stainless Steel, Titanium | Anti-fingerprint, low reflection | Outdoor watches, military style |
| Anodizing | Colored surface (black, blue, red, etc.) | Aluminum | Corrosion resistance, customizable colors | Fashion watches, lightweight watches |
| PVD Coating | Black, gold, rose gold metallic finish | Stainless Steel, Titanium | High wear resistance, long-lasting color | Premium and fashion watches |
| Electroplating | Metallic shine (nickel, chrome, gold) | Stainless Steel, Brass | Enhanced corrosion resistance, decorative | Dress watches, decorative styles |
| Powder Coating / Painting | Solid or matte color coating | Aluminum, Stainless Steel | Cost-effective, wide color options | Custom watches, trendy designs |
| Micro-Arc Oxidation | Ceramic-like matte texture | Aluminum | Extremely wear-resistant, durable | High-end sports watches |
| Polishing + Brushing Combination | Contrast of glossy and matte surfaces | Stainless Steel, Titanium | Premium design contrast, visual depth | High-end watches, iconic designs |
Trusted by CNC Watch Case Brands Worldwide
Reliable partner for CNC watch case manufacturing. Stable quality, good lead time, and professional engineering support.
SpainCarlos Martinez – Purchasing Director, Watch Parts SupplieYecheng offers great flexibility for low MOQ production. Their communication is fast and clear, which helps a lot during product development.
UKEthan Brown – Sourcing Manager, Timepiece DistributorTheir ability to machine complex case structures is impressive. The final result matches our design very closely.
JapanKenji Tanaka – Product Designer, Watch Studio
It depends on the size, structure, quantity, material and surface finish you use. We will give you a reasonable quotation after carefully checking the drawings.
316L stainless steel is most common, while titanium offers lightweight and premium performance. But if you have any preference on the materials, you can share the drawings together with your specifications.
Yes, we can help support microbrands and startup CNC watch case projects. From prototyping to drawing optimizations, we can give you professional suggestions.
