High-Precision Swiss-Type CNC Turned Parts (Star CNC) for Advanced Mechanisms
At Xierge Precision Machinery Co., Ltd., we leverage over 30 years of operational experience since 1990 to manufacture premium Swiss-Type CNC Turned Parts (Star CNC) for the automotive, medical, and industrial machinery sectors. Small module gears are critical for high-ratio, compact drive systems—such as micro-motors, robotic joints, and precision medical pumps—requiring exceptional tooth profile accuracy, minimal backlash, and superior surface finish to ensure smooth, quiet transmission and high fatigue resistance.
Our production facility is equipped with Japanese imported Star CNC Swiss-type lathes, advanced 4-axis CNC machining centers, and precision grinders. This allows us to machine complex gear geometries, including spur gears, helical gears, and bevel gears, with micro-level tolerances. The Swiss-type machining capability enables us to integrate gear hobbing and milling processes directly onto long, slender shafts in a single setup, guaranteeing extreme concentricity between the gear pitch circle and the bearing journals.
Following our core principle of "Integrity Oriented, Quality Foremost," we exclusively adopt premium raw materials, such as 20CrMnTi, SUS303/304, and brass, tailored to your specific torque and environmental requirements. We apply strict quality inspection protocols utilizing a complete set of testing instruments imported directly from Japan and Germany. We keep innovating to maintain sound business development, and we warmly welcome domestic and overseas clients to visit our factory and explore custom OEM/ODM cooperation opportunities.
Swiss-Type CNC Turned Parts (Star CNC) Technical Specifications
| Gear Types | Spur Gears, Helical Gears, Bevel Gears, Worm Gears, Internal Ring Gears, Gear Shafts |
|---|---|
| Module Range | 0.2M to 2.0M (Custom Micro-Modules Available) |
| Machining Equipment | Star CNC Swiss-type Lathes, 4-axis CNC Machining Centers, Gear Hobbing Machines |
| Precision Grade | ISO Grade 6-8 (DIN 3960), AGMA Q10-Q12 |
| Available Materials | 20CrMnTi, 42CrMo, SUS303/304/316, Brass (C36000), Aluminum, POM |
| Heat Treatment | Carburizing & Quenching, Induction Hardening, Nitriding (Up to HRC 58-62) |
| Surface Roughness (Ra) | Tooth Flank: Ra 0.4 - Ra 0.8; Ground Journals: Ra 0.2 |
| Surface Treatments | Black Oxide, Zinc-Nickel Plating, Anodizing, Passivation, QPQ |
| Inspection Equipment | German/Japanese Gear Measuring Machines, CMM, Hardness Testers, Projectors |
Core Advantages of Xierge Swiss-Type CNC Turned Parts (Star CNC)
- Micro-Precision Tooth Profiles: Utilizing advanced gear hobbing and 4-axis milling, we achieve ISO Grade 6-8 accuracy, ensuring minimal backlash and smooth, low-noise transmission in high-speed micro-motors.
- Integrated Gear Shaft Manufacturing: Our Japanese Star CNC Swiss-type lathes allow us to machine gear teeth and bearing journals in a single setup, guaranteeing extreme concentricity and reducing assembly runout.
- High-Fatigue Resistance Materials: We strictly select premium alloy steels like 20CrMnTi, applying controlled carburizing and quenching to achieve a hard, wear-resistant tooth surface while maintaining a tough core.
- Advanced Heat Treatment Control: We meticulously manage thermal deformation during heat treatment, followed by precision grinding where necessary to restore exact micro-tolerances on critical gear dimensions.
- Comprehensive Surface Engineering: We offer specialized treatments such as QPQ and black oxide to enhance surface hardness, prevent galling, and provide long-term corrosion resistance in harsh environments.
- World-Class Gear Metrology: Our quality lab is equipped with imported German and Japanese gear measuring centers, allowing us to precisely verify pitch deviation, tooth profile, and helix accuracy.
- 30+ Years of OEM/ODM Innovation: Since 1990, we have continuously innovated, collaborating closely with clients to optimize DFM for custom small module gears, from rapid prototyping to high-volume mass production.
Payment Methods & Global Logistics Solutions
Secure International Payment Terms:
To facilitate smooth B2B international trade, we offer flexible and secure payment options. For mass production orders of Swiss-Type CNC Turned Parts (Star CNC), we accept standard T/T (Telegraphic Transfer) with a 30% advance deposit and 70% balance before shipment. For large-scale international supply contracts, we are fully capable of processing Irrevocable Letters of Credit (L/C) at sight. For initial prototyping, sample orders, or custom tooling fees, PayPal and Western Union are also available to expedite the process.
Global Logistics & Protective Packaging:
We provide comprehensive end-to-end shipping solutions under FOB, CIF, and DAP Incoterms. For urgent prototypes or small batches, we utilize expedited international couriers such as DHL, FedEx, and UPS. For bulk mass production, we offer highly competitive sea freight (LCL/FCL) and air cargo rates through our trusted global forwarder network. Recognizing that small module gears have delicate tooth profiles highly sensitive to impact and oxidation, we utilize specialized packaging: each gear is individually separated and wrapped in VCI (Volatile Corrosion Inhibitor) anti-rust paper, secured in custom EPE foam slots or blister trays, and packed in sturdy export-grade cartons or wooden cases to prevent any tooth damage during international transit.
FAQ
Micro-precision gears require advanced metrology. We utilize imported German and Japanese gear measuring machines (GMM) to conduct comprehensive inspections. These instruments map the actual tooth flank topography, measuring involute profile deviation, helix deviation, and cumulative pitch deviation, ensuring they meet strict ISO Grade 6-8 or AGMA Q10+ standards.
Yes. This is one of our core specialties. Our Japanese Star CNC Swiss-type lathes, equipped with live tooling and hobbing attachments, allow us to cut gear teeth directly onto long, slender shafts in a single setup. This eliminates secondary clamping errors, ensuring perfect concentricity between the gear pitch circle and the bearing journals.
Small module gears are highly susceptible to thermal warping. We mitigate this by leaving a precise grinding allowance before heat treatment. After carburizing and quenching, we use specialized fixtures and CNC gear grinding machines to correct any micro-deformation, restoring the exact tooth profile and achieving the required surface finish (Ra 0.4).
For medical applications requiring quiet operation and corrosion resistance, we highly recommend SUS303 or SUS304 stainless steel, or POM (Delrin) for plastic gears. For higher torque requirements, we can use brass (C36000) which offers excellent machinability and inherent anti-galling properties.
With our precision Swiss-type lathes and micro-machining centers, we can reliably machine spur and helical gears with modules as small as 0.2M. We utilize specialized micro-hobbing cutters and optimized cutting parameters to prevent tooth chipping and ensure smooth meshing for micro-mechanisms.
Absolutely. QPQ is an excellent surface treatment for small module gears, particularly those made of carbon steel. It significantly increases surface hardness and wear resistance while improving corrosion protection, all with minimal thermal distortion compared to traditional quenching, which is ideal for preserving tight gear tolerances.
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