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  5. Metal bearings
  6. FINE U-NUT for Semiconductor Manufacturing

FINE U-NUT for Semiconductor Manufacturing

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last updated:Jan 19, 2026

株式会社冨士精密
株式会社冨士精密
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Vibration control in a clean environment! Suppressing bearing looseness.

In the semiconductor manufacturing industry, high precision and a clean environment are essential. In particular, vibrations from manufacturing equipment can negatively impact product quality. Additionally, contamination from foreign substances is a significant factor that can reduce yield. FINE U-NUT effectively suppresses bearing looseness, contributing to the stable operation of equipment. This is expected to lead to improvements in product quality and yield. 【Application Scenarios】 - Manufacturing equipment in clean rooms - Assembly processes for precision instruments - Conveying systems involving high-speed rotation 【Benefits of Implementation】 - Reduction in product defects due to vibrations - Mitigation of foreign substance contamination risks - Prolonged equipment lifespan

    Metal bearings
image_01.jpg

FINE U-NUT for Semiconductor Manufacturing

image_01.jpg
image_01.jpg TWIN-FU[1].jpg 小型成形品取出し用ロボット 0001.jpg 小型成形品取出し用ロボット 0002.jpg 小型成形品取出し用ロボット 0003.jpg 溶接ロボット 0001.jpg 溶接ロボット 0002.jpg 溶接ロボット 0003.jpg カップリング 0002.JPG
  • Related Link - https://www.fun.co.jp/u-town/
  • Special site - Product/service details - https://pr.mono.ipros.com/fun/product/

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basic information

【Features】 - Reusable - Easy fastening: No skilled techniques required - Labor-saving simplification: No need for keyway machining on the shaft, simplified installation work - Balance: Improved rotational balance of the shaft and bearings - Lightweight: Use of thinner-walled hollow shafts compared to conventional ones 【Our Strengths】 As a comprehensive manufacturer of locking nuts, we provide products tailored to our customers' needs. With years of experience and technical expertise, we offer high-quality products and support, contributing to solving our customers' challenges.

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Applications/Examples of results

【Delivery Examples】 ■ Semiconductor Automatic Sealing Device ■ Ball Screw ■ Food Machinery ■ NC Rotary Table ■ Pump ■ NAS Type High-Speed Screw Loosening Tester ■ Spindle ■ Small Molded Part Extraction Robot ■ Cold Press Machine ■ Drill Machine for Structural Steel

catalog(2)

Download All Catalogs
Pre-Bearing Torque Type Lock Nut FINE U-NUT Series Comprehensive Catalog

Pre-Bearing Torque Type Lock Nut FINE U-NUT Series Comprehensive Catalog

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Pre-Bolting Torque Type Lock Nut U-NUT Series Comprehensive Catalog

Pre-Bolting Torque Type Lock Nut U-NUT Series Comprehensive Catalog

CATALOG
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CAD data(64)

Model number overview File
FUN_SS IGS data
  • 3D zip ( 4MB)
FUN_SC IGS data
  • 3D zip ( 5MB)
FUN_SUS IGS data
  • 3D zip ( 3MB)
FUN_SS sldpr data
  • 3D zip ( 8MB)
FUN_SC sldpr data
  • 3D zip ( 11MB)
FUN_SUS sldpr data
  • 3D zip ( 8MB)
Small U_SUS IGS data
  • 3D zip ( 117KB)
Small U_SUS sldprt data
  • 3D zip ( 566KB)
Small U_SS IGS data
  • 3D zip ( 403KB)
Small U_SS sldprt data
  • 3D zip ( 2MB)
Small U_SC IGS data
  • 3D zip ( 301KB)
Small U_SC sldprt data
  • 3D zip ( 2MB)
Seat with metal base_SUS IGS data
  • 3D zip ( 262KB)
Seat with metal base_SUS sldprt data
  • 3D zip ( 2MB)
Seat cushion with payment_SS IGS data
  • 3D zip ( 221KB)
Seat cushion with attachment_SS sldprt data
  • 3D zip ( 861KB)
UNC_SUS IGS data
  • 3D zip ( 609KB)
UNC_SUS sldprt data
  • 3D zip ( 3MB)
UNC_SS IGS data
  • 3D zip ( 713KB)
UNC_SS sldprt data
  • 3D zip ( 4MB)
UNC_SC IGS data
  • 3D zip ( 429KB)
UNC_SC sldprt data
  • 3D zip ( 3MB)
FLANGE_SUS IGS data
  • 3D zip ( 168KB)
FLANGE_SUS sldprt data
  • 3D zip ( 822KB)
FLANGE_SS IGS data
  • 3D zip ( 607KB)
FLANGE_SS sldprt data
  • 3D zip ( 3MB)
FLANGE_SC IGS data
  • 3D zip ( 179KB)
FLANGE_SC sldprt data
  • 3D zip ( 773KB)
CAP_SUS IGS data
  • 3D zip ( 418KB)
CAP_SUS sldprt data
  • 3D zip ( 3MB)
CAP_SS IGS data
  • 3D zip ( 870KB)
CAP_SS sldprt data
  • 3D zip ( 5MB)
WELD_SS IGS data
  • 3D zip ( 364KB)
WELD_SS sldprt data
  • 3D zip ( 2MB)
WU_SUS IGS data
  • 3D zip ( 252KB)
WU_SUS sldprt data
  • 3D zip ( 2MB)
WU_SS IGS data
  • 3D zip ( 330KB)
WU_SS sldprt data
  • 3D zip ( 2MB)
WU_SC IGS data
  • 3D zip ( 219KB)
WU_SC sldprt data
  • 3D zip ( 2MB)
U_3 types_SUS IGS data
  • 3D zip ( 445KB)
U_3 types_SUS sldprt data
  • 3D zip ( 3MB)
U_3 types_SS IGS data
  • 3D zip ( 680KB)
U_3 types_SS sldprt data
  • 3D zip ( 4MB)
U_3 types_SC IGS data
  • 3D zip ( 227KB)
U_3 types_SC sldprt data
  • 3D zip ( 2MB)
U_SUS sldprt data
  • 3D zip ( 6MB)
U_SUS IGS data
  • 3D zip ( 2MB)
U_SS sldprt data
  • 3D zip ( 9MB)
U_SS IGS data
  • 3D zip ( 2MB)
U_SC sldprt data
  • 3D zip ( 8MB)
U_SC IGS data
  • 3D zip ( 2MB)
CU_SUS sldprt data
  • 3D zip ( 8MB)
CU_SUS IGS data
  • 3D zip ( 3MB)
CU_SS_Molten Zinc Coating sldprt data
  • 3D zip ( 624KB)
CU_SS_Molten Zinc Coating IGS data
  • 3D zip ( 180KB)
TFU_SC IGS data
  • 3D zip ( 7MB)
TFU_SC sldprt data
  • 3D zip ( 10MB)
SU_SUS sldprt data
  • 3D SLDPRT ( 237KB)
SU_SUS IGS data
  • 3D IGS ( 464KB)
GU_SS sldprt data
  • 3D zip ( 896KB)
GU_SS IGS data
  • 3D zip ( 152KB)
BLU_SUS sldprt data
  • 3D zip ( 912KB)
BLU_SUS IGS data
  • 3D zip ( 221KB)

Company information

株式会社冨士精密

株式会社冨士精密

Machine elements and parts

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Phone number/address

Since our establishment in 1962, Fuji Precision has focused exclusively on the research and development of locking nuts, growing into a comprehensive manufacturer of locking nuts. The 'U-Nut' brand was the first in the industry to introduce the "metal ring locking function" to bolts and nuts, which were traditionally considered prone to loosening. This groundbreaking product received a significant response upon its release and has now grown to capture a 50% share of the domestic market, becoming synonymous with locking nuts. Although bolts and nuts may be considered small parts, they play a crucial role in connecting functions and technologies. They can be described as cross-point technology that combines cutting-edge technologies and opens up new technological fields. Fuji Precision regards this theme as an eternal proposition and has been committed to product development that anticipates the needs of the times, while pursuing high quality and high added value in our products. Our future goal is to become the world's number one comprehensive manufacturer of locking nuts. We will continue to strive to create products that meet your trust and contribute to the industrial sector and society.

Product/Service List (42)

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