Holroyd’s Rotor Milling expertise secures £1.8m machine order

Large diameter rotor production in Holroyd 8EX machine

A little over two years after building one of the world’s largest rotor milling machines – an EX Series ‘8EX’ model – for a major Chinese compressor manufacturer, Holroyd Precision Ltd is about to ship a second, identical machine to the Zhejiang business.

This latest model from Holroyd Precision will be used to rough mill and ‘finish machine’ stainless steel rotors from blanks of up to 850mm in diameter and 4,500mm in length.

Manufactured from steel grades such as 1CR13 (UK: 410S21 stainless), rotors produced on the 8EX machine will weigh as much as 8,200kgs. Applications will include natural gas transportation, Organic Rankine Cycle expansion generators and process industry compressors.

Mark Curran, Holroyd Sales Manager, said: “Our development of the 8EX machine – a new generation in high capacity rotor milling, offering the precise cutting of particularly deep helical profiles – has brought exciting opportunities to organisations looking to machine highly accurate, large diameter compressor rotors.

“We were particularly pleased to receive this significant repeat order from one of our original 8EX customers. Underlining their confidence in our solutions and costing in excess of £1.8 million, the technology will enable them to further increase their capacity to satisfy China’s growing energy market.”