The 21st Seoul International Manufacturing Technology Show (SIMTOS 2026) was held at KINTEX, Seoul, South Korea, with the core exhibition period from April 13 to 16, 2026. Under the theme of “AI Autonomous Manufacturing Meets Human Talent", the show gathered 1,315 exhibitors from 35 countries with 6,059 booths, establishing itself as a top-tier machine tool and precision manufacturing exhibition in Asia.
Precision components formed a core sector of the show, concentrated in the Materials, Components & Control Technology Hall. Exhibits covered ultra-precision transmission parts, intelligent fixtures, high-end bearings, micro structural parts, and precision components for semiconductors and automotive applications, attracting strong attention from high-precision industries including semiconductors, aerospace, and new energy vehicles.
-
Ball Screws & Linear Guides
Nano-level positioning products were displayed, with positioning accuracy up to ±0.1 μm and repeat positioning accuracy of ±0.05 μm, suitable for 5-axis machine tools and semiconductor equipment. Korean manufacturers launched ceramic hybrid guides, improving wear resistance and thermal stability by 40% for high-speed and high-precision scenarios. -
High-Speed Precision Spindles
Spindles featured rotational speeds of 40,000–60,000 r/min and runout accuracy below 0.001 mm, with built-in AI temperature sensors for real-time thermal deformation compensation. Some models adopted aerostatic/magnetic bearings, delivering wear-free operation and tripled service life for wafer processing.
-
High-Precision Hydraulic/Pneumatic Chucks (SAMCHULLY)
New models achieved repeat clamping accuracy of ±0.002 mm, equipped with pressure sensing and adaptive locking for complex thin-walled parts and aerospace components. -
Micro/Special Fixtures
Micron-level clamping electro-permanent magnets and thin-film fixtures were exhibited, with clamping force adjustable from 0.1–50 N and minimal deformation, ideal for medical implants and electronic connectors.
-
Ultra-Precision Angular Contact Bearings
Bearings reached accuracy grades P2 and P4, with inner diameters of 3–50 mm, rotational speeds of 15,000–30,000 r/min, and temperature rise below 5 ℃/h. Korean brands launched Si₃N₄ ceramic ball bearings, offering lightweight, insulation, and 50% longer service life than steel bearings. -
Precision Seals and Anti-Dust Components
Multi-layer labyrinth seals for cleanroom and vacuum environments achieved cleanliness level ISO 14644-1 Class 1, supporting semiconductor etching equipment.
-
Semiconductor Precision Components
Wafer chucks, micro guides, and vacuum chucks featured flatness below 0.5 μm and roughness Ra < 0.02 μm, using silicon carbide and high-purity aluminum for corrosion resistance and low dust emission. -
Automotive & New Energy Precision Parts
Precision components including motor laminations, insulated shafts, and high-precision gears reached gear accuracy ISO Grade 4–5 and tooth surface roughness Ra < 0.1 μm, supporting EV reducers.
-
Micro/Nano Measurement Probes
Probes offered resolution of 0.01 μm and measuring force below 1 mN for non-contact profile, roughness, and 3D topography measurement. -
On-Machine Sensor Modules
Integrated laser/vision tool setters and workpiece probes enabled real-time compensation, improving machining stability by 30%.
- Components embedded with temperature, vibration, and wear sensors support real-time accuracy compensation and life prediction via edge computing.
- AI adaptive control for spindles and transmission systems automatically adjusts parameters, improving accuracy retention by 40%.
- Advanced materials including ceramics, carbon fiber composites, and single-crystal alloys enable lightweight, high-rigidity, and low-thermal-deformation performance.
- Surface coatings (DLC, nanocomposites) enhance wear and corrosion resistance, extending service life by 2–5 times.
- Core component accuracy has advanced from micrometer level (1 μm) to sub-micron/nano level (0.1–0.01 μm).
- Combined processes including lapping, polishing, lithography, and electrochemical machining achieve mirror surfaces with Ra < 0.01 μm.
- Growing demand for small-batch, non-standard, and micro precision parts (0.1–10 mm) for semiconductors, medical devices, and aerospace.
- 3D printing combined with precision post-processing enables integrated micro-components with improved complexity and reduced cost.
- Korean Local Brands: DN Solutions, SAMCHULLY, NSD, etc., leading in spindles, fixtures, bearings, and transmission parts, closely supporting domestic semiconductor and automotive industries.
- Chinese Exhibitors (approx. 20%): Competitive in precision bearings, ball screws, linear guides, cutting tools, and structural parts, accelerating entry into the Korean supply chain.
- European, American & Japanese Brands: Maintained advantages in nano-precision, ultra-clean, and extreme-environment components.
Market Orientation: Exhibits strongly focused on semiconductors, new energy vehicles, and aerospace, emphasizing cleanliness, low dust, long service life, and maintenance-free performance.
The exhibition highlighted four major trends for precision components:
AI-enabled intelligence, nano-scale precision, advanced materials, and customized manufacturing. Precision components remain a critical foundational technology in high-end manufacturing.
- For purchasers and end-users: Priority should be given to sensor-integrated, AI-compensated components with high-performance materials to improve equipment stability and service life.
- For domestic manufacturers: Strengthen capabilities in nano-fabrication, intelligent sensor integration, and high-end materials to access the global supply chain for semiconductors and new energy.