和泉チエン Product Lineup

In bicycle racing, even a slight difference in resistance can determine the outcome. To achieve higher speeds, it is important to efficiently convert pedaling power into propulsion. The track racing chain 'IZUMI-V/-KAI' addresses this challenge by reducing drive resistance. 【Usage Scenarios】 - Shortening time in track races - Improving pedaling efficiency - Competitors aiming to set new records 【Effects of Introduction】 - Improved transmission efficiency of pedaling power - Smooth and light riding feel - Possibility of setting personal bests

• Chains and sprockets

We will introduce a case where we conducted a study on the prototyping and mass production of a modular weight roller and resolved the issues. Due to its different shape compared to conventional designs and the assembly nature of the parts, there was limited knowledge from customers. Even at the prototyping stage, there were challenges such as warping during assembly and unstable dimensional accuracy due to variations in pressure input. Since an outer dimension tolerance of ±0.05mm was required during assembly, we proposed the creation of dedicated assembly jigs for each type of prototype and aimed to improve part accuracy. Although the required specifications were not met during prototyping, the variations were reduced to less than half of the initial levels, and there were no issues in the actual machines or durability test results. 【Case Overview】 ■Challenges - Even at the prototyping stage, there was warping during assembly, and dimensional accuracy was unstable due to variations in pressure input. ■Results - Although the required specifications were not met during prototyping, the variations were reduced to less than half of the initial levels, and there were no issues in the actual machines or durability test results. *For more details, please contact us.

• roller
• Chains and sprockets

We would like to introduce a case study about the development of a chain that minimizes drive resistance, achieving a performance level among the fastest in the world. Our bicycle track racing chain, "IZUMI-V," has already received high praise from top athletes. However, in preparation for a world competition, we received a request for a chain with even lower drive resistance than the conventional model. To achieve this, it was necessary to apply a surface treatment to reduce the sliding resistance only on the inside of the bushing. If the entire bushing were surface-treated, we would not be able to maintain the necessary fitting force (interference fit) of the bushing. Since partial surface treatment was difficult, we applied a surface treatment to the entire bushing and then performed our proprietary treatment on the outside of the bushing. This unique process allowed us to successfully reduce sliding resistance by 20% while maintaining the required strength. The chain is available exclusively in gray. It is a product that thoroughly eliminates all non-essential decoration, focusing purely on functionality. 【Case Overview】 Request: A product that surpasses the conventional IZUMI-V. Challenge: It was necessary to reduce drive resistance while maintaining strength. Result: 20% reduction in sliding resistance. For more details, please download the PDF or feel free to contact us.

• Chains and sprockets

Introducing the track racing chain developed for top athletes in cycling, the 'IZUMI-V/-KAI'. The conventional bicycle track racing chain 'IZUMI-V' has received high praise from top athletes around the world for many years. The 'IZUMI-KAI' is an improved version based on the 'IZUMI-V', designed to have even less drive resistance. Both chains feature a unique technology that minimizes drive resistance. The power from pedaling is transmitted efficiently, resulting in effective pedaling force. 'IZUMI-V' - Experience a direct feel of the power transmitted from the pedals. - Decorated with a beautiful gold/black design. 'IZUMI-KAI' - Enjoy a smooth and light feel. - Decoration is eliminated, focusing solely on functionality. Both chains are developed for competitive use. Please select the chain that suits your style. *For more details, please download the PDF or feel free to contact us.

• Chains and sprockets

We would like to introduce the industrial machinery chain 'ES B/EF B Series' that we handle. This is a high-quality chain compliant with British Standards, and the stainless steel type can be used safely even in environments prone to rust. Please feel free to contact us when you need assistance. 【Features】 ■ Compliant with BS standards ■ The SS series is a stainless steel type that excels in corrosion resistance and heat resistance compared to the standard type. *For more details, please download the PDF or feel free to contact us.

• Chains and sprockets

We would like to introduce the 'EF Series' industrial machinery chains that we handle. This is a standard type mainly used for transportation. The stainless steel type can be used with confidence even in environments prone to rust. Please feel free to contact us when you need assistance. 【Features】 ■ Standard type mainly used for transportation ■ The SS series is a stainless steel type that excels in corrosion resistance and heat resistance compared to the standard type * For more details, please download the PDF or feel free to contact us.

• Chains and sprockets

We would like to introduce the 'ES Series' industrial machinery chains that we handle. The standard type is a high-quality chain compliant with ANSI/JIS standards, while the stainless steel type can be used with confidence even in environments prone to rust. Additionally, we offer the "ES SS Series," a stainless steel type that excels in corrosion resistance and heat resistance compared to the standard type. 【Features】 ■ Standard type compliant with ANSI/JIS standards ■ SS Series is a stainless steel type that excels in corrosion resistance and heat resistance compared to the standard type *For more details, please download the PDF or feel free to contact us.

• Chains and sprockets

We would like to introduce our automotive timing chains, 'EF317E/EF05E'. These products are designed for automotive engines. We offer a lineup of IZUMI standard reinforced types and compact, lightweight types. Please feel free to contact us if you need any assistance. 【Features】 ■ IZUMI standard reinforced type ■ Compact and lightweight type with long lifespan *For more details, please download the PDF or feel free to contact us.

• Engine parts

We would like to introduce our automotive timing chain 'ES317R(-2)' that we handle. This is a standard chain produced under IZUMI's strict quality standards for automotive engines. Please feel free to contact us when you need it. 【Features】 ■IZUMI Standard *For more details, please download the PDF or feel free to contact us.

• Engine parts

We would like to introduce the motorcycle chain (for motocross) that we handle, the 'ES520MCRII'. This is a high-performance motocross chain characterized by its gold color. Additionally, it is a non-sealed chain with excellent durability and high strength, making it suitable for off-road use. 【Features】 ■ Non-sealed ■ High-performance motocross chain ■ Gold color *For more details, please download the PDF or feel free to contact us.

• others
• Chains and sprockets

We would like to introduce the "Motorcycle Chain (X-Ring Seal Chain)" that we handle. This high-performance chain has a longer lifespan than O-ring seals and is suitable for both on-road and off-road motorcycles. Additionally, it has low friction, resulting in approximately half the power loss. Please feel free to contact us when you need assistance. 【Features】 ■ Lower friction and longer lifespan than O-ring seals ■ Available in reinforced type and gold color *For more details, please download the PDF or feel free to contact us.

• Chains and sprockets

We would like to introduce the "Motorcycle Chain (O-Ring Seal Chain)" that we handle. It is a highly durable chain, available in reinforced and long-life types, with the long-life type expected to last 10 times longer than the standard type. It is suitable for both on-road and off-road motorcycles. 【Features】 ■ Excellent wear resistance chain ■ Available in reinforced type, long-life type, gold color, and silver color *For more details, please download the PDF or feel free to contact us.

• others
• Chains and sprockets

We would like to introduce our bicycle chain 'IZUMI-V'. This high-quality chain is used in track and keirin racing. It is loved by competitors in track races around the world and has produced many medalists. In addition to being for competitive use, it is also used on fixed-gear bikes (piste) and urban bikes. 【IZUMI-V Features】 ■ NJS Certified ■ Durability: More than three times that of standard chains ■ Quick drive response ■ Stable performance over long periods ■ Connecting link: Bolt-nut type (Standard chain: Spring clip type) *For more details, please refer to the PDF document or feel free to contact us.

• others

Izumi Chain Co., Ltd. has been responding to the needs of the industrial sector for nearly 100 years since its establishment in 1916, primarily focusing on the manufacturing of roller chains. With outstanding technical skills and a spirit that never compromises on quality, we have gained broad trust from users not only in Japan but also around the world. 【Business Activities】 ■ Various types of roller chains - For bicycles, motorcycles, automobiles, power transmission Heavy-duty, agricultural machinery, and other special applications ■ Other components - Winding processed products, pressed products, forged products, machined products *For more details, please refer to our catalog or feel free to contact us.

• Chains and sprockets
• Other Auto Parts

This is a high-speed precision timing chain for automobiles developed for the overseas aftermarket, featuring smooth operation and high durability. We offer a range from standard types to reinforced standard types, as well as compact, lightweight, and ultra-long-life timing chains. 【Features】 ■ Smooth high-speed precision transmission ■ High durability *For more details, please refer to the catalog or feel free to contact us.

• Chains and sprockets
• Other Auto Parts