Page 41 - ITAtube Journal 1 2024

NAKATA MFG CO., LTD.
NAKATA is proud to announce further FFX mill development
Press releases
NAKATA MFG. has successfully completed commissioning and final acceptance of a 5” ERW tube and pipe production line installed in Asia. The production line is equipped for the first time with the new type of FFX mill in breakdown section.
FFX mill, originally developed by NAKATA MFG, features the state of the art technol- ogy of roll common-use thanks to mul- ti-radius (involute style) curvature profile. Recently, some radical improvements in the design of this unique forming equipment have been made, aiming at less installa- tion space, easier maintenance and higher performance:
Diameter of rolls has been reduced and unified as far as possible, which resulted in machine compact size and more rigid
ITAtube Journal April 2024
structure. Additionally, new “side pull-out” function for FFX BD stands provides opera- tors with easy access to the rolls when any maintenance or roll regrinding is needed, while the latter will be required not more than once a year or several years, depend- ing on the production volume.
Compared to the previous type of FFX mill design for the same range of products, the longitudinal dimension has been shortened by 1/3, which contributes a lot to using this design in forming section revamping projects.
Another change here: a specially designed roll APC devices reduced the quantity of electrical motors drastically, without sacri- ficing the quality of roll repositioning during size change. The great quantity reduction of positioning motors simplifies the control
41