In addition to producing helical rotors, 4EX-R-BL models can also be programmed to mill straight-fluted, ‘infinite’ lead rotors, as used in Roots-type blower ‘air ends’.
30-minute milling time, floor-to-floor
Equipped to mill helical rotors of up to 450 mm in diameter in one seamless manufacturing process, the 4EX-R-BL will rough mill blower blanks of around 320 mm in diameter and 900 mm body length into straight-fluted rotors. The process takes approximately 30 minutes floor-to-floor, ready for finish profile milling to absolute size.
This represents a significant time saving when compared to the one-and-a-half to two hours typically required to cut individual Roots-type blower rotor flutes using traditional flat bed milling techniques, where each flute has to be manually turned then milled in a separate operation.