ヤマウチ List of Products and Services

Yamauchi has contributed to society as a specialized manufacturer of industrial rubber and plastic products for nearly a century since its founding in 1918 (Taisho 7). Currently, we supply high-quality industrial components born from our unique ideas and experience to a wide range of industries, including audiovisual equipment, home appliances, copiers and printers, disk drives, paper manufacturing equipment, spinning machinery, and construction-related sectors. In recent years, we have established local subsidiaries and factories in various regions to aim for further expansion in overseas markets and are actively promoting technological partnerships with foreign companies. **Features of Yamauchi** - YQR (Yamauchi Quick Response) - High-functionality and high-quality manufacturing that meets high specifications - Worldwide network - Manufacturing backed by TPM activities - I&C (Innovation and Communication) - Environmentally conscious manufacturing *For more details, please refer to the PDF materials or feel free to contact us.*

• Rubber
• roller
• belt

Providing "standard products" is not the only job of Yamauchi. Since our founding in 1918, our proposal capabilities, technical skills, and responsiveness have received high praise from companies. We have succeeded in efficiently converting the kinetic energy of balls into thermal energy using our unique compounding technology, which helps to suppress rebound. There are solutions to challenges that may seem impossible with conventional materials. Please let us know. 【The three strengths we have cultivated so far】 ■ Proposal capability to identify causes and provide countermeasures ■ Unique compounding design capability and technical skills in handling composite materials ■ Flexibility to respond to various requests *For more details, please refer to the PDF materials or feel free to contact us.

• Rubber

Our company has introduced innovative design concepts to the air shafts used in winding and unwinding machines, establishing a composite technology for ultra-lightweight construction. We offer a range of products including the standard "SL type," the "C type" which uses specially reinforced rubber, and the "Rugged type" which enhances durability. Please feel free to contact us when you need assistance. 【Features】 ■ Ultra-lightweight ■ Weight is 1/3 of conventional products ■ Torque is double that of conventional products ■ High torque capability ■ Improved operability *For more details, please refer to the PDF materials or feel free to contact us.

• Other machine elements

The "YOM Series" is a single cushioning material that can be reused hundreds of times with various presses and laminators. It achieves high plate thickness accuracy due to its excellent cushioning and resilience. It exhibits outstanding performance in pressure unevenness buffering, uneven surface following, and void prevention. Unlike paper cushioning, it does not cause contamination from paper dust or generate harmful gases, and it can withstand high temperatures of up to 230°C. 【Features】 ■ High cushioning and high resilience ■ Usable up to 250°C ■ Repeatable use with low aging changes ■ No generation of paper dust, etc. ■ Low moisture absorption, low outgassing *For more details, please refer to the PDF document or feel free to contact us.

• Composite Materials
• Cushioning material

The "High-Performance Vibration Damping Damper" effectively suppresses vibrations in home appliances that use compressors, such as refrigerators, air conditioners, and washing machines. Our company designs optimal vibration-damping rubber by utilizing a wide range of material variations, years of accumulated vibration isolation theory, and new analytical simulations. We ensure thorough quality control from manufacturing to inspection, providing high-quality components. 【Features】 ■ Tunable with a diverse range of hardness variations in 5° increments ■ Graded dynamic viscoelasticity (tan δ) across a wide range of 0.1 to 0.8 ■ Excellent vibration isolation achieved through two methods ■ Effectively suppresses vibrations in home appliances *For more details, please refer to the PDF materials or feel free to contact us.

• Other machine elements
• Anti-vibration, earthquake-proof, vibration-isolating devices

Our company is engaged in various developments with a focus on contributing to safety. We have developed biocompatible rubber materials used in ultrasound diagnostic probes and high-sensitivity acoustic lens rubber achieved through a clean production environment. This contributes to the reliability of ultrasound examinations. 【Features】 ■ For ultrasound diagnostic probes ■ High-sensitivity acoustic lens rubber ■ Contributes to the reliability of ultrasound examinations *For more details, please refer to the PDF document or feel free to contact us.

• others

We have developed a battery cap that ensures high cracking strength and significantly improves explosion-proof stability through high-precision mold design. This helps prevent battery explosions and enhances product safety. Yamauchi's clean seal rubber, which excels in design, dust resistance, and light shielding, is used in onboard cameras for advanced driver assistance systems (ADAS), contributing to higher pixel quality. Additionally, we supply narrow-pitch connectors made with high-precision molds, along with waterproof packing assemblies. 【Features】 ■ High-precision mold design ■ Enhanced product safety *For more details, please refer to the PDF document or feel free to contact us.

• others

Our company is committed to contributing to energy conservation by implementing various innovations and measures. To address vibration and noise in refrigerators, we enhance the matching with inverter control, significantly reducing resonance in the operating range. This not only improves the reliability and durability of our products but also achieves further energy savings. 【Features】 ■ Vibration and noise reduction ■ Significant reduction of resonance ■ Improved durability ■ Energy conservation *For more details, please refer to the PDF document or feel free to contact us.

• others

Our company is taking various measures to ensure that you can use our products comfortably. We also contribute to the reduction of vibrations and noise generated during the use of washing machines. Our high-damping vibration isolation materials effectively suppress vibrations at all motor speeds, reducing drum rotation errors and vibrations transmitted to the floor. This contributes to the reliability and durability of our products. 【Features】 ■ Vibration and noise reduction ■ Effectively suppresses vibrations caused by the motor ■ Reduces drum rotation errors ■ Suppresses vibrations transmitted to the floor ■ Contributes to improved durability *For more details, please refer to the PDF materials or feel free to contact us.

• others

YOM & Top Board contribute to the automation of processes and improvement of work efficiency. They are single cushioning materials that significantly enhance productivity in heat pressing. In the heat pressing process, cushioning materials are used. However, conventional paper cushioning materials had numerous issues, such as being "usable only once" and "unable to be automatically transported due to the need to stack multiple layers." The solution to these problems was the single cushioning material "Top Board," developed by Yamauchi in 1960 as the first in the industry. Now, with the addition of "YOM," which further surpasses its performance, the lineup has become even more comprehensive. As a leading company in single cushioning materials, Yamauchi meets a wide range of needs across various industries. *YOM (Yamauchi Original Mat) *For more details, please contact us.

• fiber

The shoe press belt enhances the dewatering efficiency in the press part of the papermaking process and achieves stable long-term operation. Yamauchi has developed a next-generation shoe press belt that realizes remarkable durability, reliability, and dewatering capabilities, as a culmination of over 50 years of accumulated advanced polyurethane development and processing technology, receiving favorable reviews not only in Japan but also from users overseas. 【Features】 ■ Excellent polyurethane development technology for high abrasion resistance and crack resistance ■ Various groove shapes are proposed → Comprehensive sales and technical services are provided from the design stage before adoption to regular inspections after product delivery → Solutions to reduce shoe edge cracking are also available (patent obtained) → To improve drainage, surface roughness of grooves has been significantly enhanced through excellent processing technology and the use of special groove cutting tools (patent obtained) *For more details, please contact us.

• belt

This is a hysteresis torque limiter used for preventing double feeding in paper feed devices of copiers and printers, preventing image blur, or controlling tension in banknote processing machines. 【Features】 ■ Utilizes powerful neodymium magnets for miniaturization → Improved responsiveness compared to conventional friction methods → Does not put a burden on the torque generation mechanism *For more details, please contact us.

• Torque Control

Yamauchi's vibration-damping rubber effectively suppresses vibrations in optical disc drives, significantly reducing data errors and sound skipping. Yamauchi utilizes a wide range of material variations, years of accumulated vibration-damping theory, and the latest analytical simulations to design optimal vibration-damping rubber (dampers, insulators), providing full support to customers from design to manufacturing and inspection. We contribute to your high-quality product creation. 【Features】 - Tunable with a diverse range of hardness variations in 5-degree increments - Dynamic viscoelasticity graded over a wide range of 0.1 to 0.8 m → Excellent compression strain characteristics due to thermosetting rubber, achieving high reliability → Outstanding weather resistance, with no ozone cracking under conditions of 40°C/50pphm for 72 hours → Environmentally friendly and compliant with RoHS directives → Capable of accommodating complex shapes ● For more details, please contact us or download the catalog.

• Rubber

This is a vibration-damping damper that effectively suppresses the vibrations of home appliances that use compressors, such as refrigerators, air conditioners, and washing machines. At Yamauchi, we utilize a wide range of material variations, long-developed vibration isolation theories, and the latest analytical simulations. This allows us to design optimal vibration-damping rubber and maintain strict quality control throughout manufacturing and inspection, providing high-quality components. 【Features】 ○ Tunable with a diverse range of hardness variations in 5-degree increments ○ Dynamic viscoelasticity graded over a wide range of 0.1 to 0.8 m → Excellent compression strain characteristics due to thermosetting rubber, achieving high reliability → Outstanding weather resistance, with no ozone cracking occurring under conditions of 40°C/50pphm for 72 hours → Environmentally friendly and compliant with RoHS directives → Capable of accommodating complex shapes ● For more details, please contact us or download the catalog.

• Other machine elements

We produce essential resin components for hard disk drives, such as ultra-high precision mechanical parts, in a thoroughly clean environment. Yamauchi utilizes mold technology capable of forming complex shapes at the micron level, as well as the development of clean and heat-resistant materials that do not contaminate the interior of drives. We provide high-quality precision molded parts that meet our customers' stringent requirements in a thoroughly clean environment. 【Features】 ○ Advanced mold technology and precision molding techniques to accommodate all complex shapes ○ Production in a thoroughly controlled quality management environment

• Rubber

The transfer roller for copiers and printers is a high-grade transfer roller designed to meet the demands for high speed and high quality in copiers and printers. At Yamauchi, we provide high-performance transfer rollers that meet the stringent requirements of high-end users by utilizing our unique formulation technology to create ion-conductive rubber materials. 【Features】 ○ Utilizes ion-conductive rubber developed from Yamauchi's unique formulation technology ○ Minimal increase in electrical properties (resistance value) even after long-term use ○ Significantly reduces contamination to photoconductors and other components ○ Offers two types of materials depending on usage conditions and applications → Sponge → Solid + Coating ● For more details, please contact us or download the catalog.

• roller