Sumitomo Riko



Sumitomo Riko’s industrial hoses used in construction machinery and construction sites and our rubber bearings for bridges used for protecting infrastructure networks such as elevated highways and bridges from the threat of earthquakes contribute to the development of building the foundation of industry and public transport. We have achieved the largest share of the market* for anti-vibration rubber for rolling stock used in Shinkansen and trains in Japan, and it is also widely utilized overseas. Sumitomo Riko also contributes to earthquake disaster reconstruction in Japan, and infrastructure improvement around the world, particularly in emerging countries.

*Estimate by Sumitomo Riko

Click here
to make an inquiry about our product

Heavy Machinery

We utilize our rubber compounding, molding technology, metal fitting processing, and bonding technology to provide ultra-durable hoses that meet the needs of various industrial machines. Our hydraulic hoses feature a multi-layered structure consisting of layers of rubber and wire to provide both resistance and flexibility. The use of special compound rubber imparts resistance to weather and long-term durability.

Click here for product catalog

Hydraulic Hoses

Assembly Products

The flexibility of our hydraulic hoses makes compact piping possible in heavy construction machines, forklifts and other equipment. They also play a part in the improvement of infrastructure and logistics around the world.

Hydraulic Hoses, Fittings and Crimping Machines

By selling hydraulic hoses, fittings, and crimping machines individually, you can easily customize hoses to meet the needs at each construction site. Our speedy and optimal solutions will also ensure prompt delivery of hydraulic hoses.

Construction and Civil Engineering

Industrial hoses are used at building construction and civil engineering sites. Sumitomo Riko offers high-durability hoses that utilize special rubber materials and structural design technology based on our material development technology. These include abrasion-resistant hoses used to deliver raw concrete and drain mud from underground construction sites and oil-resistant hoses for industrial machinery.

Click here for product catalog

Industrial Hoses

High Arrow

Used by attaching to the end of a concrete pump that pumps ready-mixed concrete at construction sites. It is lightweight, flexible, and features excellent workability. A special rubber compound and structural design provides improved abrasion resistance and realize a longer service life.


They are used to convey water, mud, and concrete, and you can find them helping with construction deep underground. Over many years, they have contributed to the development of our towns and cities, being used in a variety of major projects.

Rolling Stock

Sumitomo Riko’s rubber products are more than a match for the requirements of infrastructure where long life and durability are required.
Our anti-vibration rubber for rolling stock ensures passengers enjoy a smooth ride by reducing the vibrations from rails. It is able to withstand constant vibration and harsh environmental conditions, and is widely used in the railway industry both in Japan and around the world.

Anti-vibration Rubber for rolling stock

Cylinder Rubber Axle Springs

Mono-link Bushes (Link Bushes)

Radius Arm Rubber Bushes

These rubber products are used in the truck parts of trains to significantly reduce vibration generated from the track. They are used for the Shinkansen as well for most domestic railroad rolling stock. They are also widely used overseas.


Sumitomo Riko is developing rubber bearing for bridges that ensure safety of bridges, highways and railway viaducts from natural disasters and severe climate changes.
To protect our social infrastructures, we are offering “High Damping Rubber bearing Extreme (HDReX)”, and “High Damping Rubber Bearings-Superior (HDR-S)” that contributes to improve the bridge’s seismic isolation performance by damping and dispersing the inertial force during earthquake. Also, “Disk Rubber Bearing (DRB)” a disk type rubber bearings’ that is mountable in narrow areas.

Rubber Bearings for bridges

High Damping Rubber bearing Extreme (HDReX)

Benefitting from optimized polymer structures and newly developed compounding materials, HDReX is a high-performance seismic isolation bearing having a higher damping ability, less temperature dependence in low temperature ranges, and better low hardening than conventional high-damping rubber.

Disk Rubber Bearing (DRB)

This compact rubber bearing uses urethane rubber, which has high hardness, high elasticity, outstanding ozone and cold resistance, and high surface pressure. It is suitable not only for new bridges but also as a replacement for bearings of existing bridges.

Example of rubber bearings for bridges in use  "Bizen ♡ Hinase Bridge" in Okayama

Landscape Materials

We can offer products for a variety of aesthetics needs. “MOLD STAR” is a special resin cosmetic mold rubber with a design that harmonize with the natural surroundings when used for civil engineering purposes and rich variety of designs for wall surfaces when used for construction purposes. In addition, “PATWALL” can be used for a broad range of purposes including soil erosion prevention and steel sheet pile coating due to reduced constructing time and waste reduction.

Example of landscape materials in use:


This product provides a tile-type design for concrete. It reduces the risk of title pealing and detachment, and reduces maintenance costs for existing apartments and buildings.

Click here
to make an inquiry about our product
Photosensitive water-washable AquaGreen Flexo Plate
Fine Elastomers Business
Manga: Sumitomo Riko's Business
Sumitomo Riko


JP Tower Nagoya 1-1-1, Meieki, Nakamura-ku, Nagoya-shi,
Aichi 450-6316, Japan
Access map

Komaki Head

1, Higashi 3-chome, Komaki-shi, Aichi 485-8550, Japan
Access map