2005 - Sumitomo SHI Demag EL-EXIS S 250 Injection Moulding

About this machine

This Sumitomo SHI Demag EL-EXIS S 250 is an injection moulding machine — sometimes referred to as an injection moulding press — a type of industrial equipment used to produce plastic components by injecting molten material into a closed mould under high pressure. Sumitomo (SHI) Demag is a well-established manufacturer of plastics processing machinery, supplying injection moulding solutions to industries including automotive, packaging, consumer goods, and medical technology. This example was built in 2005 and is offered used from a seller based in Germany, with five similar units available.

The machine is driven by a pump with a rated power of 22.0 kW and is designed to operate on a 400 V / 50 Hz, three-phase supply with neutral and protective earth connections, with separate mains connections provided for the drive and heating circuits. A central accumulator supports high-speed injection, and the injection axis is managed via a servo valve that controls injection, holding pressure, and back pressure independently. The electric screw drive is frequency-controlled, allowing precise management of screw rotation speed. An ultrasonic displacement measuring system with digital data transmission monitors movements across the injection, ejector, mould, and nozzle axes, with a resolution of 1/100 mm on the injection axis.

The clamping unit features chromed tie bars and a reduced centering diameter of 100/125 mm for the fixed mould platen. Mould connection dimensions follow type E (similar to EUROMAP), and the machine is configured with a standard mould installation height and without a side ejector plate. Nozzle movement runs parallel to mould movement. The ejector is equipped with position control via a proportional valve, with pressure and velocity independently programmable.

Cooling is handled by a reinforced oil cooler, and separate water connections are provided for mould cooling and oil cooling. The machine sits on elastic mountings to reduce vibration transmission. Operator safety is ensured through an interlock that permits mould opening and ejector forward movement only when the safety door is closed. The control system features a colour data display with VGA interface and AT keyboard interface. The machine is supplied in a standard European configuration, built in compliance with the applicable safety regulations at the time of manufacture, and finished in anthracite grey RAL 7016 on the lower sections and blue 571C MD on the upper.

This description was generated automatically from the listing details and may not reflect every specification. Please confirm with the seller before purchase.