Koplas: Servo-pumps get thumbs up from Korean machinery users


Energy savings continue to be high on the agenda at Korean injection machine OEMs as evidenced by offerings on show at the recent Koplas show in Seoul. Conceding the all-electric market to Japanese OEMs, the focus is on deployment of servo-powered hydraulic pumps to realize these energy reductions. The LGH850MEIII from LS Mtron Ltd. (Anyang, Korea) on display at the recent Koplas show in Seoul as one such example. Supplier LS says the machine employs two servo-piston pumps that generate an energy conserving effect of up to 45%.

"This machine is proving particularly popular in the auto sector. We offer servo-pumps as an option but in essence they've become standard because almost all our customers are opting for them," says Lee Jong-Hun, general manager of the Overseas Sales Team at LS.

Woojin PLAIMM (Incheon) has also opted for the hybrid route with its two-platen machine that employs a servomotor for plasticizing. Servo-pumps are also employed; three in the case of a 2000-tonne machine. Machines range in clamping force from 450 to 3000 tonnes, while a 3500-tonne machine should be available by year-end....

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