Swiss-type turning machines utilize a sliding headstock that feeds metal bar stock through a stationary guide bushing right where the turning tool cuts. This design eliminates mechanical lever deflection under cutting force. For watch components like balance staffs, center pinions, and winding stems, this yields structural concentricity within ±0.002 mm. Standard turning allows bar vibration, leading to microscopic taper deviations that increase gear friction, cause uneven jewel bearing wear, and shorten movement lifespan. Swiss lathe engineering guarantees structural symmetry, minimal kinetic power loss, and perfect casing tolerances across thousands of OEM units.

Maxima is not a modern marketing front or private-label trading company that buys pre-assembled catalog watches. We belong to the PA group, which commenced operations in 1966 by machining precision mechanical watch spares on Petermann Swiss lathes. Over six decades, our engineers mastered gear tooth cutting, pivot burnishing, heat treating high-carbon steel pinions, and collaborating on Swiss mechanical movements. When quartz technology emerged in the late 1980s, we established integrated quartz movement assembly, and in 1996 we introduced guaranteed waterproof casing systems. This deep industrial heritage ensures that every case geometry, gasket seat, and hand clearance is backed by decades of physical metallurgical expertise.

Zirconia (ZrO2) ceramic is created by sintering ultra-fine oxide powder under 1,400 °C heat and high pressure. The resulting material achieves a Vickers hardness rating of 1,500 to 1,900 HV (compared to 200–240 HV for 316L stainless steel), making it completely scratch-proof against everyday abrasive contact with keys, stone, and metals. Ceramic is also 100% hypoallergenic, non-metallic, impervious to UV discoloration, and highly resistant to saltwater corrosion. Conversely, 316L stainless steel offers higher tensile ductility and impact toughness, making it less prone to cracking under high-g force impacts. Maxima utilizes Swiss lathe precise machining for both media, recommending ceramic for high-finish dress models (Serica series) and steel for heavy tool designs (Apex Luxe).

Every waterproof case manufactured across our Waterproof Pro and Aqua Fiber lines undergoes a mandatory two-stage dry and wet testing sequence conforming to ISO 22810 international standards. First, cased timepieces are placed in dry vacuum and hyperbaric air pressure chambers equipped with differential pressure sensors. If gasket compression leaks even 0.1 µbar of air per second, the unit is flagged. Second, assembled watches undergo thermal immersion testing: watches are warmed on a heated plate to 40 °C and then dropped with a cool water droplet on the crystal face. Internal moisture condensation immediately reveals any seal compromise. Only watches passing both stages earn our guaranteed waterproof certification.

As a vertically integrated factory, Maxima provides full-spectrum OEM and ODM customization services. B2B clients can specify case material alloys (316L steel, ZrO2 ceramic, lightweight fiber, PVD gold/rose gold IP coating), custom dial finishes (sunray, enamel, genuine mother-of-pearl, diamond-cut indices), customized movement rotors with laser-engraved branding or Côtes de Genève stripes, bespoke crown knurling, sapphire vs. mineral crystal coatings, and tailored retail presentation packaging.

Production lead times and minimum order quantities vary depending on material selection and tooling requirements. For existing casing platforms with custom dial and hand branding, MOQs typically start at 300 to 500 units per reference, with production cycles completing in 45 to 60 days. Fully bespoke ODM cases requiring dedicated Swiss lathe programming, stamping dies, and custom ceramic sintering molds typically require 1,000 units with initial tooling lead times of 75 to 90 days. Samples are produced and approved prior to mass manufacturing runs.

Our quality assurance protocol consists of a six-stage inline audit: 1. Raw material spectrographic and metallurgical check; 2. Optical comparator and coordinate measuring machine (CMM) audit of Swiss-lathe turned pinions and case threads; 3. Movement rate-testing on computerized timing machines to verify beat error and amplitude; 4. Automated dual-stage pressure decay water testing; 5. Optical dust and scratch inspection under 10x magnification light boxes; and 6. Traceable serial numbering and warranty registration logging.