We Are Your Reliable Supplier on Medical Parts

CNC precision machined medical metal parts: precision medical mandrels, surgical instrument pins, medical lead screws, guide pin shafts, U-shaped clamp connectors, endoscope precision rods, minimally invasive equipment transmission shafts, medical locating pins and other medical device components.

Material, Function & Technical Specifications

Materials

- Medical grade stainless steel: SUS316L, 17-4PH, 420HC. Good biocompatibility and corrosion resistance, withstand repeated high-temperature & high-pressure sterilization.

- Titanium alloy Ti-6Al-4V ELI: implant-grade lightweight material, low sensitization and high specific strength.

- Aluminum alloy 6061/7075: medical equipment housings and fixture connectors.

- Oxygen-free copper: thermal & conductive components for medical equipment.

Function

Used in minimally invasive surgical instruments, endoscopes, medical testing equipment, rehabilitation devices and implant auxiliary assemblies. For precision transmission, guiding positioning, hinged movement and locking fixation. Clean surface without precipitation, resistant to steam, EO sterilization, to ensure stable and safe operation of medical devices.

Technical Parameters

Dimensional Tolerance: ±0.002~±0.008 mm for precision mating shaft diameter; ±0.01~0.03 mm for general structural dimensions.
Geometric Tolerance: Coaxiality ≤0.002 mm, straightness ≤0.002 mm, circular runout ≤0.002 mm.
Surface Roughness Ra: Ra0.1~0.4μm for moving mating surfaces; Ra0.8μm for common contact surfaces; Ra1.6μm for non-mating surfaces. Surface scratch-free and burr-free, easy for cleaning and sterilization.
Surface Treatment: Electropolishing & passivation for stainless steel; titanium polishing / sand blasting; hard anodizing for aluminum. No harmful plating to meet medical cleanliness standards.
Performance: Biocompatibility and corrosion resistance, sharp-edge & burr-free, high cleanliness, reusable sterilization, material certificate available.

Why Customers Choose Us & Technical Problems We Solve

High cleanliness & zero burr requirement: Medical parts forbid tiny burrs or scratches which may retain biological contaminants. Precision grinding and electropolishing plus edge passivation meet clinical cleanliness and sterilization requirements.

Difficult machining of slender micro-rods: Slender shafts and fine pin shafts for minimally invasive instruments are prone to deformation and out-of-tolerance coaxiality. Custom fixtures and staged stress relief control deformation and ensure smooth transmission.

Material compliance & full traceability: All medical raw materials come with material certificates. Full batch traceability system, material reports available for medical industry audit.

Strict biological & anti-corrosion control: Electrolytic passivation improves corrosion resistance without hazardous coating. Parts endure repeated steam and EO sterilization, no rust or substance precipitation.

Flexible production from prototyping to mass production: Medical products feature multi-variety & small-batch orders. Support rapid prototyping and design iteration, production controlled under ISO13485 medical quality system.

Machining Processes & Equipment

Machining Process

Raw material cutting → CNC Swiss lathe rough machining → Stress relief → Turn-mill finish machining → Flat milling / slotting / threading → Precision cylindrical grinding → Deburring & ultrasonic cleaning → Electropolishing / passivation → Clean inspection & dust-free packaging

Production Equipment

CNC Swiss lathe, turn-mill composite machine, cylindrical grinder, centerless grinder, CNC machining center, precision milling machine, ultrasonic cleaning machine, electropolishing equipment

Inspection Equipment

Coordinate Measuring Machine (CMM), roundness tester, 2D optical image measuring instrument, surface roughness tester, lever dial gauge, coaxial runout tester, hardness tester, salt spray tester, metallographic detector