Medical Small Shaft Accessories CNC Milling

• Customization: Available
• Type: Round
• Standard: GB, ISO 13485 ISO 9001
• Model NO.: 8G
• Composition: Stainless Steel
• Technique: Cold Drawn
• Shape: Circle
• Surface Treatment: Polished
• Special Use: Stainless Steel Capillary Tube
• Application: Medical Stainless Steel Long Shaft Accessories
• Appearance: Electropolishing Passivation
• Processing: CNC Milling
• Secondary Processing: Sandblasting Scale
• Transport Package: Plastic Box; Cardboard Box
• Specification: 260*200*120
• Trademark: yue lin sen
• Origin: Dongguan, China
• HS Code: 7301200000
• Production Capacity: 51000pieces/Year

Product Description

Medical Small Shaft Accessories CNC Milling

Product Description

Product Application:
These are precision, small-diameter rotational or linear components essential for the function of compact medical devices and instruments. They act as pivots, drives, guides, or connectors within constrained spaces.

Minimally Invasive Surgical Tools: Articulation pins and drive shafts within laparoscopic graspers, scissors, and staplers.
Drug Delivery Devices: Precision lead screws, plunger rods, and actuator shafts in insulin pens, auto-injectors, and micro-infusion pumps.
Diagnostic & Monitoring Equipment: Sensor spindles, gearbox pinions, and optical chopper shafts in handheld analyzers, glucose meters, and wearable sensors.
Dental Handpieces: Turbine spindles and bur chucks in high-speed drills.
Ophthalmic Instruments: Fine adjustment screws and pivots in surgical microscopes and phacoemulsification handpieces.
 
Product Description:
We specialize in the CNC milling of miniature shaft and axle components from medical-grade materials for integration into small-scale medical devices. These parts are characterized by their small diameters (often under 5mm), precise lengths, and intricate features such as flats, grooves, threads, splines, or eccentric diameters that cannot be produced by standard turning alone. Using multi-axis CNC milling centers and micro-tooling, we manufacture these components with high dimensional accuracy, excellent surface finish, and strict geometric tolerances. Common materials include 316L stainless steel for corrosion resistance, 17-4PH for strength, and PEEK or Ultem for lightweight, non-metallic applications. These miniature shafts are critical for transmitting motion, force, or torque reliably in the compact assemblies of modern medical technology.

Main Product

Base Material	Metals	316L Stainless Steel, 17-4PH (Condition A for machining), Titanium (Ti-6Al-4V).
	Engineering Plastics	PEEK, Ultem (PEI), Acetal (POM).
	Material Certification	Mill certificates provided. Biocompatibility certs (ISO 10993) available for applicable materials.
Component Scope	Part Types	Miniature shafts, axles, pins, stepped mandrels, lead screw blanks, custom pivots.
	Common Features	Flats, grooves (for E-rings/circlips), cross-holes, threads (metric, unified), micro-splines, knurls, tapers, eccentric diameters.
Dimensions & Tolerances	Diameter Range	0.5 mm to 10.0 mm(focus on sub-5mm components).
	Length Range	2 mm to 100 mm.
	Aspect Ratio (L/D)	Capable of high aspect ratios with proper fixturing and tooling strategies.
	Standard Dimensional Tolerance	±0.0125 mm (±0.0005")on critical diameters and lengths.
	High-Precision Tolerance	±0.005 mm (±0.0002")achievable for critical features.
	Geometric Tolerances	True Position:< 0.02 mm.Perpendicularity/Parallelism:< 0.01 mm.Concentricity:< 0.01 mm TIR.
	Surface Finish	As-milled:Ra 0.4 - 0.8 µm (16 - 32 µin).Enhanced (via grinding/polishing):Ra ≤ 0.2 µm (8 µin).
Manufacturing Process	Primary Equipment	High-Precision 4-Axis & 5-Axis CNC Milling Machineswith micro-tooling capability.
	Tooling	Utilization ofmicro-diameter end mills and drills(down to Ø0.1mm).
	Secondary Operations	Deburring, Tumbling, Passivation (for metals), Cleaning.
Quality Assurance	Inspection Equipment	Video Measuring System (VMS), Non-contact optical profilometer, High-magnification microscope, CMM (for larger batches).
	Inspection Report	Includes dimensional data, surface roughness measurements, and visual inspection notes.
	Cleanliness	Cleaned and packaged in controlled environments. Can meet specific particle count requirements.
Compliance & Support	Quality System	Manufactured under aISO 13485:2016certified Quality Management System.
	Documentation	First Article Inspection Report (FAIR), Material Certifications, Certificate of Conformance.
	Design Support	Design for Manufacturability (DFM)feedback provided to optimize part geometry for milling and performance.

Company Profile

Dongguan Yu Lin Sen Metal Technology Co., Ltd.: Has obtained theGB/T 19001-2016/ISO 9001:2015 quality system certification, as well as the GB/T42061-2022/ISO 13485:2016 medical device quality system certification. Focuses on the research and production of non-standard metal medical device precision parts, mainly as machined metal products. It possesses dozens of high-precision engra-ving lathes and CNCequipment,including CNC numerical control, numerical control centering machine, automatic lathes, turningmilling combined machines, precision laser cutting processing of stainless steel capillary tubes and stainless steel thin-walled tubes for sec-ondary processing. Main materials: stainless steel tubes, stainless steel, copper, aluminum alloy, etc. for non-standard processing and customization. Widely applied in tools, electronics, electrical appliances, medical devices, automotive parts, transportation, and other industries. The company has been recognized by the industry for its "quality-oriented, honest operation" philosophy, mainly providing
non-standard part prototyping and batch production processing, supporting custom drawings and sample customization, etc. The process flow is stable and efficient, integrating industry and trade for rapid delivery, with craftsmanship spirit ensuring quality, without middlemen, excellent value for money, and the company adheres to the business philosophy of "customer first, quality first, striving for excellence, win-win cooperation", "Confident and reliable after-sales guarantee!!!".

Product Advantage

It has obtained the quality system certification in accordance with GB/T 19001-2016/ISO 9001:2015, as well as the medical device quality system certification in accordance withGB/T 42061-2022/ISO13485:2016. We focus on processing and customizing products for medical device hardware, and we have dozens of precision CNC lathes and precision laser cutting processing equipment. We also have a R&D team composed of senior engineers and technicians. We are committed to providing customers with high-quality and
high-precision processing and customization services for hardware parts, ensuring that each product meets the strict standards and requirements of the medical device industry. Through continuous optimization of production processes and improvement of technical levels, we can meet the diverse needs of customers and contribute to the development of the medical device industry.

Certifications