Development of Equipment and Construction Methods for Diverse Construction Conditions, Pile Materials and Large-Diameter Piles

「In domestic product sales, sales of general-purpose machines, including the new Silent Piler ST400SX, progressed in response to rising demand from some customers.」

「コンクリート市場参入に向け、2025年12月に2回目の試験施工完了 ⚫ 課題であった杭材の強度について現地杭材メーカーと連携して改善」

「The new machine substantially improves safety through functions that automatically detect an overload in the lifting device and stop it safely, the addition of an opening-and-closing guard to prevent incorrect entry, elimination of high-altitude sling operations, and a function that prevents excessive tension in the lifting wire.」

「In domestic product sales, the company began selling the new Handling System to GM members in response to rising demand from some customers, and sales progressed strongly. The product is a lifting device for the Pile Auger attached to a Silent Piler. Because it eliminates the need to lift the auger with a large crane, it expands the range of applications to sites such as underneath bridges, where construction had been difficult using conventional technology.」

「Maximum torque has increased approximately 2.7 times compared with the previous model, preventing a sharp drop in auger rotational speed even when the machine encounters hard ground that is difficult to excavate.」

「In domestic product sales, the Silent Piler F112, equipped as standard with a Flywheel Pile Auger that improves the auger system's excavation capacity and construction efficiency when pressing steel sheet piles into hard ground, performed strongly. Since their market launches in May 2021 for the Flywheel Pile Auger and May 2023 for the Silent Piler F112, both have been well received by users as breakthrough products that expand the range of hard-ground applications while improving productivity, and unit sales have been increasing steadily.」

「Sales of the new Silent Piler F112, equipped as standard with a Flywheel Pile Auger that improves the excavation capacity and construction efficiency of the auger system to enable steel sheet pile press-in on hard ground in mountainous areas and other locations with obstacles, as well as sales of general-purpose machines, progressed smoothly. Sales of the attachment also remained solid.」

「The Flywheel Auger Attachment, launched in May 2021 as a product enabling construction on ultra-hard ground that could not be penetrated by conventional machines designed for hard ground, substantially expanded the range of steel sheet pile press-in applications, and sales progressed strongly.」

「During the consolidated fiscal year, the company focused its R&D efforts on improving the efficiency, operating conditions, unmanned operation, labor savings, electrification and globalization of machinery and equipment. Total R&D expenses were ¥604 million.」

「The Group’s total research and development expenditure for the six-month period ended [the second quarter of] the current consolidated fiscal year was ¥253 million, all of which was allocated to the Construction Machinery segment. There were no material changes in the status of the Group’s research and development activities during the six-month period.」

「Overhead-clearance construction method, for ultra-low headroom Clear Piler CLW100 for 500 mm and 600 mm U-shaped steel sheet piles; press-in capacity: 1,000 kilonewtons Clear Piler CLP200A for 800 mm to 1,000 mm steel pipe sheet piles; press-in capacity: 2,000 kilonewtons Rotary cutting and press-in machine GRV0611e Φ500 and Φ600 electric-chuck Gyro Piler; press-in capacity: 1,100 kilonewtons」

「Amid efforts to strengthen national resilience and extend the service lives of structures, sales began of the new CLW100 and CLP200A Clear Piler pile press-in and extraction machines for press-in works under restricted headroom, such as seismic reinforcement of aging bridges and riverbank rehabilitation beneath bridges.」

「In domestic public civil engineering works, progress was made in shifting the pile material used in permanent works from 600 mm-wide U-shaped steel sheet piles to 900 mm-wide hat-shaped steel sheet piles, which offer better cost efficiency and constructability. Strong sales of large specialised machines, including the F301-900 compatible with this pile material, resulted in revenue of ¥5,043 million, up 49.6% year on year, and segment profit of ¥1,318 million, up 93.9%.」

「During the consolidated fiscal year, the company focused its research and development on improving the efficiency of machinery and equipment, unmanned operation, labour saving and globalisation. Total research and development expenses were ¥625 million.」

「In April, following partial advance sales from the previous year, the company began full-scale sales of the new Smart Piler SX1 pile press-in and extraction machine, designed specifically for the 400 mm-wide U-shaped steel sheet piles most frequently used in Japan and offering improved construction efficiency.」

「For new construction methods and products, development focused on automation and unmanned operation, improving productivity and expanding the range of applications, while the technological foundation supporting package rollout was developed.」

「In product development, the new Clamp Crane CB2-10, a pile lifting device and one of the main components of the GRB System, a temporary-works-free construction system that completes the entire press-in piling process on top of the piles, was completed in September and sales were launched.」

「During the consolidated fiscal year, the company focused its research and development on improving the efficiency of machinery and equipment, unmanned operation, labour saving and globalisation. Total research and development expenses were ¥803 million.」

「The group’s total research and development expenditure for the cumulative 3rd quarter was ¥605 million, all of which was allocated to the Construction Machinery business segment. There were no material changes in the status of the group’s research and development activities during the cumulative 3rd quarter.」

「In response, emergency flood-control works are under way in Okayama Prefecture, which was affected by the Western Japan heavy rains. The Hard Ground Clear Construction Method, which enables press-in piling into hard ground such as cobble-mixed gravel layers, has been adopted at several sites, including the Takahashi, Oda and Yoshii rivers.」

「During the consolidated fiscal year, the company focused its research and development on improving the efficiency of machinery and equipment, unmanned operation, labour saving, product series development and globalisation. Total research and development expenses were ¥827 million.」

「As demand for disaster prevention and mitigation increases, demand has grown for the Silent Piler F301 and general-purpose Silent Piler F101, which address rehabilitation and reinforcement works for storm-surge barriers, seawalls and other structures.」

「In January 2018, the company began accepting orders for the new Silent Piler F401-P1200 press-in machine compatible with the steel pipe sheet pile press-in construction method.」

「The group’s total research and development expenditure for the cumulative 1st quarter was ¥108 million, all of which was allocated to the Construction Machinery business segment. There were no material changes in the status of the group’s research and development activities during the cumulative 1st quarter.」

「During the consolidated fiscal year, the company focused its research and development on improving product construction capacity, automation, labour saving, product series development, globalisation and reliability. Total research and development expenses were ¥767 million. ① High-output chuck assembly AM174 for the hydraulic pile press-in and extraction machine and F501-G1200 Gyro Piler for φ800–φ1200 steel pipe piles, F501-G1500 Gyro Piler for φ1200–φ1500 steel pipe piles, and CL70B Clear Piler for upper obstructions on 400 mm-wide U-shaped steel sheet piles」

「The group’s total research and development expenditure for the cumulative 3rd quarter was ¥633 million, all of which was allocated to the Construction Machinery business segment. There were no material changes in the status of the group’s research and development activities during the cumulative 3rd quarter.」

「As adoption of the Gyropress Construction Method expands for projects including the development of “Implant Levees,” which can restore and strengthen the functions of existing structures without removing them, we developed the new Silent Piler rotary cutting press-in machines F301-G1000, F401-G1200 and F501-G1500 for this method, and initially began rental operations for selected customers.」

「Market launches were completed for the 700 mm-wide Z-shaped steel sheet pile press-in machine F301-Z700, the 1400 mm-wide WZ-shaped steel sheet pile press-in machine F401-Z1400 and the F301-G1000 Gyro Piler for φ600–φ1000 steel pipe piles. The F501-G1500, a newly developed Gyro Piler for φ1200–φ1500 steel pipe piles in the φ1500 configuration, was also developed.」

「Sales of the Silent Piler F Series press-in machines, incorporating advanced construction management technology and a machinery maintenance system, remained strong. In March, the company announced the new CB2-9 Clamp Crane for a wide range of pile materials. As piles become larger in diameter, a Gyro Piler compatible with φ2000 large-diameter steel pipe piles began operating for the first time in river improvement works in Sapporo, Hokkaido, in March, and plans are also progressing in Tokyo.」