Japan's first electrohydraulic direct drive ring rolling machine
Ohmi Press Works and Forging in Japan has ordered its sixth ring rolling machine from SMS group, featuring Japan's first electrohydraulic direct drive concept to significantly reduce energy consumption. The new RAW 500/400-4500/800 EH radial-axial ring rolling machine enables Ohmi to produce seamless rings up to 4,500 millimeters in diameter with precise tolerances, benefiting various industries such as automotive and aerospace. The machine includes advanced software packages like CARWIN and ROLLTECH, ensuring reproducible results and efficient operations.
This investment underscores Ohmi's commitment to leading technology and strengthens its long-standing partnership with SMS group.
The new radial-axial ring rolling machine incorporates SMS's patented electrohydraulic direct drive concept, which significantly reduces energy consumption by 25 to 50% compared to conventional machines. This innovative drive system not only enhances energy efficiency but also lowers investment costs by minimizing the need for extensive hydraulic systems and pipework. The machine's advanced digital technology package ensures precise and reproducible rolling results, maintaining close manufacturing tolerances. This strategic decision supports Ohmi's goal of expanding capacity and maintaining its competitive position in the ring rolling industry.
Plant technology
The ring rolling machine, RAW 500/400-4500/800 EH, is distinguished by its electrohydraulic direct drive concept. By utilizing multiple small electrohydraulic drives rather than a single large hydraulic system, the machine provides precise power delivery on demand.
The innovative system integrates a comprehensive digital technology package, including CARWIN, ROLLTECH, SMS-Metrics, and Smart Alarm, to enhance operational efficiency and product quality. CARWIN enables precise computer-aided rolling under Windows, while ROLLTECH simulates the rolling process and generates specific parameters, improving consistency critical for industries like automotive, aerospace, and wind power. SMS-Metrics optimizes operations through sensor data analysis, and Smart Alarm enhances alarm system management, leading to increased machine uptime and reduced maintenance costs.
Additionally, advanced machine features such as quick tool changes, remote-controlled settings, and the Ring Monitoring System (RMS) for real-time quality control and continuous optimization further boost operational flexibility and availability. These technologies collectively improve process transparency, minimize downtime, and elevate component quality, strengthening competitiveness in the global market and optimizing production workflows for Ohmi.
Overall, the combination of energy-efficient technology, advanced digital solutions and comprehensive support from SMS group allows Ohmi to produce high-quality rings more efficiently.
Main data
- Plant type: RAW 500/400-4500/800 EH
- Ring diameter (max.): 4,500 mm