Today's KNOWLEDGE Share : World’s first 4,000-metric-ton (4,440-ton) electric injection molding machine

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Today's KNOWLEDGE Share

New 4,400-ton Electric Molding Machine Targets Automotive Applications

The “ultra-large” press is designed to address demand for lightweight parts among makers of electric vehicles.

#JapanSteelWorks Ltd. (JSW) has introduced what it is calling the world’s first 4,000-metric-ton (4,440-ton) #electricinjectionmolding machine. The so-called “ultra-large” press was designed initially to mold lightweight components for #electricvehicles (EVs) to extend range, but also has applications in agricultural and industrial machinery and household appliances, primarily for the US market.

Target products for the machine with a 4,000-tonne clamping force include exterior automotive parts such as bumpers and tailgates, as well as the conversion of #EVbatterycases to #plastic, said JSW. 

Hydraulic presses currently dominate the 4,000-tonne injection molding machine market, said #JSW, but they are saddled with a number of issues:

High operating costs caused by significant power consumption, the use of hydraulic oil, and water cooling requirements;

poor precision, resulting in quality variability;

limitations in mold opening/closing and injection speeds, making it difficult to shorten production cycles.

To address these shortcomings, JSW said it opted for an electric system that optimizes productivity, energy efficiency, and product quality. In addition, a long-life, robust machine design is a differentiator in the injection molding machine market, according to JSW.


The model J4000F-22000H reportedly achieves the fastest dry cycle in the industry, improving productivity by 10% compared with current hydraulic presses. Moreover, power consumption is reduced by as much as 20%, consumption of cooling water is slashed by 50%, and hydraulic oil use is cut by 70%. Annual operating costs can be reduced by 20%, according to JSW, and the machine also lessens CO2 emissions compared with hydraulic presses.


Despite the massive tonnage, the machine’s footprint is only 17.4 meters (57 feet) in length, which JSW claims is the shortest in the industry. The rigid mold platen, similar in design to a car bumper with a short vertical and long horizontal shape, comes with a large-diameter, movable support mechanism that maintains platen precision over extended periods, said JSW.

JSW will exhibit at the K show in Düsseldorf, Germany, in October in hall 13 at booth B77.


source: Plastics Today

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