Choosing an all-electric injection molding machine is no longer just an environmental statement; it is a strategic move for manufacturers who prioritize precision, speed, and long-term cost-efficiency.
While traditional hydraulic machines have served the industry for decades, the transition to electric (like the LS Mtron WIZ-E or Real Series) offers distinct competitive advantages:
Unmatched Precision and Repeatability
Electric machines use high-speed servo motors to drive every movement. This allows for:
0.01 mm Accuracy: Digital control over the screw position and mold movement ensures every part is identical.
Reduced Scrap: Unlike hydraulic oil, which changes viscosity as it heats up, electric motors are unaffected by temperature, resulting in a stable process from the first shot to the last.
Massive Energy Savings
This is the most immediate “ROI” (Return on Investment) for a factory.
40% to 70% Lower Power Bills: Hydraulic pumps run constantly to maintain pressure. Electric motors only consume power when they are moving.
No Cooling Costs for Oil: Since there is no hydraulic oil to keep cool, you save additional energy on your factory’s chiller systems.
Faster Cycle Times
Electric machines excel at parallel movements. In a hydraulic machine, the pump often has to switch between functions. In an electric machine:
The ejectors can move while the mold is still opening.
The screw can recover (plasticize) while the mold is opening or closing.
This “overlap” can shave seconds off every cycle, which adds up to thousands of extra parts per day.
“Clean Room” Compatibility
For industries like Medical and Food Packaging, electric is the standard:
Zero Oil Contamination: There are no leaks, no mist, and no disposal issues related to hydraulic fluid.
Lower Noise: Electric machines are significantly quieter, creating a much better working environment for operators.
Reduced Maintenance
Hydraulic systems are complex, involving valves, seals, hoses, and filters that eventually leak or wear out.
Simpler Mechanics: Electric machines have fewer “wear” parts.
No Oil Changes: You eliminate the cost of buying, filtering, and disposing of hundreds of liters of hydraulic oil every year.
Comparison at a Glance
| Feature | Hydraulic Machine | All-Electric Machine |
| Power Consumption | High (Constant) | Very Low (On-demand) |
| Precision | Good | Excellent (Digital) |
| Noise Level | High | Low |
| Cleanliness | Oil leaks/mist possible | Perfectly Clean |
| Maintenance | Frequent (Filters/Oil/Seals) | Minimal |