About Us
Koretsune Seiko Co., Ltd. is a manufacturer specializing in hydraulic equipment and reduction gears for construction machinery.
We manufacture and sell hydraulic cylinders, hydraulic pumps, reduction gears, and other components that power large machinery such as construction, industrial, and agricultural equipment, enabling dynamic movement.
Established : April 1969 (Showa 44)
Capital : 50 million yen
Number of Employees : Approximately 200
Site Area : Approximately 40,856m²
Factory Area : Approximately 19,835m²
Related Companies : KSWORK Co., Ltd.
Koretsune Seiko Vietnam Co., Ltd.
Izumi Seiki Kosakusyo Co., Ltd.
Certifications : ISO9001
ISO14001
JISQ9100
(Engineering Development Center)
Bank : Sumitomo Mitsui Banking Corporation
👇Company introduction video (full version)
News
September 12, 2024
Received SER (Supplier Excellence Recognition) EXCELLENT from Caterpillar Inc.
March 28, 2024
We have renewed our website.
January 15, 2024
Published our initiatives on SDGs.
June 17, 2022
Message
Since our establishment in 1969, we have undergone a business transformation from traditional sewing to the current metalworking industry. Over the years, we have primarily focused on manufacturing and selling hydraulic equipment for construction machinery.
In addition, we have diversified into new fields such as industrial robot parts, hydraulic dampers for construction, and more recently, shafts for construction machinery and special bolts for gas turbines. Not only in domestic operations but also in 2010, we established a local subsidiary in Vietnam, enabling us to establish a development and production system that can flexibly respond to rapidly changing business environments and customer needs.
Furthermore, our company is guided by three management principles that form the foundation of these business activities:
-
Challenge for fruitful future
-
Spirit of customer first
-
Continuous self innovation
With these three principles in mind, we aim to enhance quality, meet delivery deadlines, and reduce costs. Through our manufacturing endeavors, we seek to contribute to society while also striving for the well-being of our employees and their families in all aspects of life.
Koji Koretsune
President and CEO
Products
Hydraulic Cylinders
Mechanical devices that produce linear motion using hydraulics, primarily used in construction machinery such as hydraulic excavators.
Adjuster Cylinders
Cylinders used to adjust the tension of the crawler tracks on hydraulic excavators.
Hydraulic Pumps
Hydraulic devices that supply pressure required for hydraulic cylinders, motors, etc., used in various applications including construction machinery and agricultural equipment.
Reduction Gears
Devices used to control the turning motion in machines and vehicles, primarily used in construction machinery such as hydraulic excavators and cranes.
Industrial Robot Parts
Utilized in robots performing various tasks including assembly, welding, painting, and transportation.
Hydraulic Dampers
Devices used in buildings to absorb and dampen seismic vibrations, widely used in many redevelopment projects.
Hydraulic Valves
Devices used to control the flow and pressure of oil within hydraulic systems, employed in equipment like concrete pump trucks.
Gas Balancers
Used as balancers for industrial multi-joint robots in spot welding, pallet loading and unloading, and handling of products.
Clients
(In alphabetical order)
CATERPILLAR
Kawasaki Heavy Industries, Ltd.
Kobelco Construction Machinery Co., Ltd.
KUBOTA Corporation
NACHI-FUJIKOSHI Corporation
SENQCIA Co., Ltd.
YANMAR Construction Machinery Co., Ltd.
Factory Introduction
Head Office & Kasai
Minami No.1 Factory
2001-44 Abiki-cho, Kasai City, Hyogo 675-2113, Japan
TEL 0790-49-3232
FAX 0790-49-3255
Engneering Development Center
2001-62 Abiki-cho, Kasai City, Hyogo 675-2113, Japan
TEL 0790-49-3568
FAX 0790-49-2338
Kasai Minami No.2 Factory
2001-61 Abiki-cho, Kasai City, Hyogo, 675-2113, Japan
TEL 0790-49-3308
FAX 0790-49-1705
(Related Company) KORETSUNE SEIKO VIETNAM CO., LTD.
Lot D14, D15, Dinh Tram Industrial Park, Nenh Ward, Viet Yen Town, Bac Giang Province, Vietnam
TEL 0084-240-3661828
FAX 0084-240-3661919
Nishiyokota Factory
211 Nishiyokota-cho, Kasai City, Hyogo 675-2335, Japan
TEL 0790-46-0212
FAX 0790-46-1605
(Related Company)
Izumi Seiki Kosakusyo
Co., Ltd.
For more details
Contact Us
2001-44 Abiki-cho, Kasai City, Hyogo 675-2113, Japan
(0790)49-3255