It has high-end precision production equipment: CNC lathes, 5-axis CNC, 4-axis CNC, stamping equipment, die-casting equipment, etc. 2.5-dimensional detection equipment
The most significant advantage of CNC machining of stainless steel watch case components lies in its exceptional geometric accuracy and assembly reliability. Utilizing a high-precision five-axis CNC machining center, the overall dimensional tolerance of the watch case can be stably controlled within ±0.01mm, the lug width accuracy within ±0.005mm, the flatness of the crystal mounting groove ≤0.005mm, the case back thread accuracy 6H grade, and the clearance between the case back and the main body controlled within 0.01-0.02mm.
This high consistency in mass production ensures high-end watch manufacturing. In the mass production of Swiss automatic mechanical watch cases, the critical dimension dispersion of 10,000 pieces does not exceed 0.005mm, and the CPK value is consistently maintained above 1.67.
Trustworthy CNC machined stainless steel watch parts for bulk customization
CNC machining technology enables stainless steel watch cases to achieve complex geometric shapes. Five-axis linkage machining allows for the precise fabrication of complex watch case shapes, including asymmetrical ones, with a surface contour error of ≤0.01mm. For sports watches, the stainless steel case features precision-machined lugs that conform to the wrist's curvature, ensuring comfortable wear and preventing wobbling during exercise.
Precision machining of the bezel's anti-slip texture. A micro-milling cutter creates fine, uniform anti-slip teeth on the bezel, with a tooth width of 0.2-0.3mm, a tooth depth of 0.1-0.15mm, and a tooth pitch accuracy of ±0.01mm.
Precision mating between the case and crystal. The crystal mounting step flatness is 0.005mm, and the chamfer angle accuracy is ±0.5°.
Austenitic stainless steel 316L exhibits excellent performance in watch case manufacturing. It boasts outstanding corrosion resistance, and after precision machining, the stainless steel case achieves a surface finish of Ra0.1μm, maintaining its luster and resisting scratches during daily use.
Fully utilization of its non-magnetic properties. 316L stainless steel is non-magnetic, suitable for mechanical watches, ensuring high timekeeping accuracy. Anti-magnetic watches feature cases that resist magnetic field interference from daily life.
Precise control of surface integrity. A high-gloss surface is achieved through precision machining, and passivation further enhances corrosion resistance. For diving watch cases, the precision surface prevents seawater adhesion, making cleaning easy.
Precision machining of multiple sealing grooves. Crystal sealing grooves and case back sealing grooves are machined on the case, with groove width accuracy ±0.01mm, groove depth accuracy ±0.005mm, and groove bottom roughness Ra0.8μm. For diving watches, the stainless steel case with a double sealing ring structure achieves a water resistance depth of 300 meters.
Precision machining of the threaded case back. The case back thread accuracy is 6H, the perpendicularity of the thread to the sealing end face is ≤0.01mm, and the thread surface roughness is Ra0.8μm. The screw-in case back features precision threads that ensure stable locking torque and reliable waterproofing.
Precision fit between the crown tube and the case. The mounting hole for the stem is dimensionally accurate to H6 grade, with an interference fit and a mating surface roughness of Ra0.4μm. The antimagnetic case features an integrated stem and case design to minimize leakage points.
Precise Positioning of the Spring Bar Holes: The spring bar hole position accuracy is ±0.01mm, with a diameter tolerance of H7 grade and uniform chamfering at the hole opening. Quick-release spring bar holes, precision-machined for easy installation and removal of the spring bars and convenient strap replacement.
Precision Machining of the Lug Grooves: The width accuracy of the leather strap mounting groove is ±0.02mm, with a groove bottom radius of R0.2mm to avoid stress concentration. For a standard case, the precision lug groove ensures a tight, gapless fit after leather strap installation.
Precise Forming of the Integrated Lugs: The lugs are machined integrally with the case, resulting in a smooth transition and no welding marks. For sports cases, the integrated lugs offer high strength and excellent impact resistance.
We are a manufacturer integrating industry and trade. We have more than 20 years of experience in production technology. We are located in Dongguan City, Guangdong Province, China. We have advanced high-end professional production and processing technology, and are committed to innovative R&D and production. After years of market tempering and exploration, it has high-quality technical management personnel, experienced designers, R&D personnel and a perfect company management system cnc precision.
5-axis CNC workshop
Our factory has a plant area of about 2,000 square meters and masters core processing technologies. It has high-end precision production equipment cnc precision: CNC lathes, 5-axis CNC, 4-axis CNC, stamping equipment, die-casting equipment, etc. 2.5-dimensional detection equipment 
cnc precision surface treatment
For surface treatment, our suppliers have been working with us for many years. They have rich experience and are familiar with all the quality requirements of each other. The quality is stable and more guaranteed. Such as: heat treatment, spray painting, powder coating, blackening, silver/gold plating, electrolytic polishing, nitriding, phosphating, nickel/zinc/chromium/TiCN plating, anodizing, polishing, passivation, sandblasting, galvanizing, heat treatment , hardening, laser marking, etc. according to customer requirements. Aluminum alloy surface oxidation
Packaging Details
Q1: Where can I get product & price information?
A1: Send us an inquiry e-mail, we will contact you once we received your mail.
Q2: How long will I get the sample?
A2: Depends on your specific items, within 3-7 days generally.
Q3: What kinds of information do you need for a quote?
A3: Kindly please provide the product drawings in PDF, if provide in STEP or IGS will be better.
Q4: What are the payment terms?
A4: We accept 50% as a payment deposit, when the goods are prepared, we shoot photos or videos for your check, and then you can pay the balance. For small quantities, we accept Paypal, the commission will be added to the order. For big amounts, T/T is preferred.
Q5: How to deliver the goods?
A5: We deliver the products by courier company.
Q6: Are you a trading company or factory?
A6: We are factory direct with 17 experienced engineers and more than 50 employees as well approximate 3,000m2 workshop area.
Q7: What shall we do if we don't have drawings?
A7: Please send your sample to our factory, then we can copy and provide you better solutions. If send us pictures or drafts with dimensions(Length, Height, Width), CAD or 3D file will be made for you.
Q8: Can we get some samples before mass production?
A8: Absolutely yes.
Q9: Will my drawings be safe after sending them to you?
Q10: Is it possible to know the operation status of my products without visiting your company?
A10: We will offer a detailed production schedule and send weekly reports with digital pictures and videos which show the machining progress.
