.png?lang=en-US&ext=.png)
SMS group, Yamato Steel Commission Japan’s First CRS® Roller Straightener
10/14/2025 - Manufacturer of beams and sections Yamato Steel and SMS group have successfully commissioned Japan’s first compact roller straightener (CRS®) for Yamato Steel’s heavy section mill in Himeji, Japan.
The companies said the mill was originally supplied by SMS group in 2024. It was upgraded with the CRS 2000-9H straightening machine, featuring nine rollers and a 2,000 mm pitch. It is designed to straighten heavy sections and sheet piles by applying controlled bending forces. The process corrects distortions and ensures consistent results.
SMS group said the scope of supply included the engineering, equipment supplied mainly by its workshops, a new L1 automation system and technical assistance for the erection and commissioning, and the provision of spare and change parts.
The CRS design enables precise and accurate adjustments with the straightening rollers supported in bearings on both sides. It allows the straightening forces to be applied symmetrically to ensure uniform product quality, less residual stress in the finished products and a longer straightening disc service live.
Each straightening roller is individually driven and the top rollers can be adjusted by hydraulic means even under load. The load share control system has less installed power and overload protection, with optimized drive power and high energy efficiency.
Other features include a fully automatic to change all nine straightening rollers at once and an automated chamber size adjustment system for the straightening discs.
SMS group said the scope of supply included the engineering, equipment supplied mainly by its workshops, a new L1 automation system and technical assistance for the erection and commissioning, and the provision of spare and change parts.
The CRS design enables precise and accurate adjustments with the straightening rollers supported in bearings on both sides. It allows the straightening forces to be applied symmetrically to ensure uniform product quality, less residual stress in the finished products and a longer straightening disc service live.
Each straightening roller is individually driven and the top rollers can be adjusted by hydraulic means even under load. The load share control system has less installed power and overload protection, with optimized drive power and high energy efficiency.
Other features include a fully automatic to change all nine straightening rollers at once and an automated chamber size adjustment system for the straightening discs.
