コーリツ List of Products and Services

We would like to introduce the "Ass'y" conducted by Kouritsu Co., Ltd. We achieve the assembly (press fitting) of each component and guarantee functionality. We ensure "leakage between oil passages through leak testing" and "traceability through our in-house marking machine (laser marker)." Additionally, we can measure the press fitting load for all oil passage sealing plugs. Please feel free to contact us when you need our services. 【Overview】 ■ Guarantee of leakage between oil passages through leak testing ■ Guarantee of traceability through our in-house marking machine (laser marker) ■ Measurement of press fitting load for all oil passage sealing plugs *For more details, please refer to the PDF document or feel free to contact us.

• Processing Contract

We would like to introduce the "Grinding and Sub Assembly" of Kouritsu Corporation. We have achieved guaranteed grinding outer diameter dimensions through full measurement. Examples of processing include "full automatic measurement of ground outer diameters" and "shaft outer diameter grinding using a cylindrical grinding machine." Please feel free to contact us when you need our services. 【Processing Examples】 ■ Full automatic measurement of ground outer diameters ■ Shaft outer diameter grinding using a cylindrical grinding machine *For more details, please refer to the PDF document or feel free to contact us.

• Processing Contract

We would like to introduce Kouritsu Co., Ltd.'s "Heat Treatment Processing." We have achieved distortion suppression through a high-output method using high-frequency quenching. Focusing on high-frequency quenching, we apply heat treatment methods such as carburizing quenching and gas nitriding, tailored to the application and material. Please feel free to contact us when you need our services. 【Overview】 ■ Realization of short delivery times and low costs through in-house design and manufacturing of high-frequency quenching coils ■ Quenching pattern guarantee using cooling fixtures designed in-house ■ High output × short heating time * For more details, please refer to the PDF materials or feel free to contact us.

• Processing Contract

We would like to introduce Kouritsu Corporation's "tooth cutting processing." By developing tool coatings that meet precision requirements, we achieve high quality and low cost. We perform helical gear processing using high-speed hobbing machines. Please feel free to contact us when you need our services. 【Overview】 ■ Challenge of increasing speed by maximizing equipment capabilities ■ Assurance of tooth profile and tooth line accuracy through the introduction of CNC fully automatic gear measuring machines ■ Helical gear processing using high-speed hobbing machines *For more details, please refer to the PDF materials or feel free to contact us.

• Processing Contract

Introducing the "cutting processing" of Kouritsu Corporation. Features include high-speed cutting achieved through the in-house development of cutting tools and jigs, as well as a unique polishing-free method. We perform high-speed cutting processing by promoting the development of cutting tools and jigs that make the most of advanced machines. [Overview] - Promotion of high-speed cutting through the development of cutting tools and jigs - Quality assurance using high-precision three-dimensional measuring machines - Introduction of automated transport devices and model identification devices designed and manufactured in-house - Consolidation of processes by adding axes to general-purpose equipment (machining centers) *For more details, please refer to the PDF materials or feel free to contact us.

• Processing Contract

We would like to introduce the "Plastic Processing (Cold Forging)" of Kouritsu Co., Ltd. Utilizing a process-integrated press with the introduction of a three-stage transfer and the strengths of combined cutting processes for mold making. By implementing CAE analysis software, adopting auto pallet changers, and utilizing three-dimensional transfer and three-stage forming, we achieve process shortening, integration, and high productivity. [Processing Examples] ■ Precision forming of internal splines using a 100t press ■ Forming of stator shaft raw materials using a 1200t press ■ Forming solid round bar materials into hollow raw materials in three stages *For more details, please refer to the PDF materials or feel free to contact us.

• Processing Contract

Our company has established a system that consistently meets customer needs and expectations through reliable management practices across various specialized departments, from raw material development to cold forging, turning, gear cutting, hardening, grinding, and assembly of components. With the wide range of technologies cultivated in automotive gear train products, we are determined to actively expand into product areas where our unique characteristics can be utilized, without being confined to existing domains. We will leverage our trusted technology, management, and practical capabilities to respond to various needs. 【Business Activities】 ■ Manufacturing of automotive parts ■ Cutting of automatic transmissions, gearboxes, functional components, and drive components ■ Cold forging, high-frequency hardening, and sub-assembly *For more details, please refer to the PDF document or feel free to contact us.

• Processing Contract

Kouritsu Co., Ltd.'s sub-assembly processing features unique assembly technology to achieve the assembly of products with different processing steps. We guarantee the pull-out load through press-fit load comparison using in-house load cells, and we ensure air leakage with our in-house air leak tester. Our unique shape design establishes quality. This sub-assembly technology has been developed through the establishment of pressure, crimping, and pressure resistance. For more details, please contact us or refer to our catalog.

• Processing Contract

Kouritsu Corporation's heat treatment processing is a highly reliable heat treatment technology tailored to applications and materials, focusing on high frequency processes such as "carburizing, gas soft nitriding, and salt bath nitriding" quenching. We have overcome heat treatment distortion caused by high output. We are also striving for automation through the introduction of robots and enhancing equipment capabilities. We guarantee quenching patterns using self-designed cooling fixtures. For more details, please contact us or refer to our catalog.

• Processing Contract

Kouritsu Corporation's gear cutting process has established gear precision after heat treatment through the development and introduction of special cutting tools, achieving high quality and low cost. We are also promoting challenges to increase speed by maximizing the capabilities of our cutting equipment. Furthermore, we are advancing cost reduction through the utilization of internal gear cutting methods (broaching). With the introduction of gear measuring instruments, we ensure the quality of tooth profile and tooth strength precision. For more details, please contact us or refer to our catalog.

• Processing Contract
• Gear cutting machine/Gear finishing machine

Kouritsu Co., Ltd.'s cutting processing is characterized by high-speed cutting achieved through the unique development of cutting tools and jigs, as well as a proprietary grinding-free method. We have introduced three-dimensional processing and composite processing utilizing cutting-edge machines. In our high-speed cutting achieved through the unique development of cutting tools and jigs, we have developed a "super boring bar" that reduces processing time to one-third of the conventional time for hole machining. In our grinding-free method, we have established a cutting technique with a precision of 0.8Z. We maintain reliable quality through high-precision three-dimensional measuring instruments. For more details, please contact us or refer to our catalog.

• Processing Contract
• Other cutting tools

At Kouritsu Co., Ltd., our plastic processing (cold forging) focuses on process shortening and consolidation through the introduction of FEM analysis software, the adoption of automatic pallet changers, and the utilization of three-dimensional transfer and three-stage forming. We perform precision machining of high-load products using a 1200t press. We are working on optimal mold design through the introduction of FEM analysis software and the realization of near-net shape by shortening development lead times. Additionally, we have achieved a significant reduction in setup time through external setup with the adoption of automatic pallet changers, and we confirm and understand the flow of the metal structure after forging through fiber flow inspection. For more details, please contact us or refer to our catalog.

• Plastic processing machines (cutting and rolling)
• Processing Contract