Both architectures can be configured for very different molding jobs. Compare the installed motion package, mold functions, process demand, utilities, maintenance model and acceptance conditions before choosing a route.
“Electric” and “servo-hydraulic” describe how major functions are driven, but real machines can combine electric, hydraulic and pneumatic subsystems. The commercial comparison must name the installed configuration and the production conditions.
Start with the full selection sequenceAsk which motions are independently servo-driven, which can run simultaneously and how the proposed screw, mold functions and peripheral equipment are integrated.
Ask how the servo-pump system, valves, accumulators or separate circuits support injection, clamp, ejector, core and simultaneous movement requirements.
These are questions, not universal advantages. The proposal and controlled technical data must answer each one for the machine being considered.
| Decision field | All-electric review | Servo-hydraulic review |
|---|---|---|
| Motion architecture | Confirm which axes are servo-electric and whether any nozzle, ejector, core or auxiliary function uses another power source. | Confirm which axes use the servo-pump hydraulic circuit and whether any injection, plasticizing or auxiliary motion is electric. |
| Parallel movement | Check the controller, installed drives and permitted simultaneous sequence for the proposed configuration. | Check pump capacity, accumulators or separate circuits and the actual simultaneous-motion option scope. |
| Mold functions | Hydraulic cores, valve gates or special actuators may still require an external or integrated hydraulic package. | Hydraulic mold functions may integrate naturally, but circuit count, flow, pressure and control remain configuration-specific. |
| Utility envelope | Collect connected load, peak demand, cooling-water needs, power quality and any air or hydraulic auxiliary demand. | Collect connected load, cooling-water needs, oil-system conditions, ventilation and any air or auxiliary demand. |
| Process fit | Review injection profile, pressure/flow demand, screw recovery, mold motion and the actual drive package. | Review the same process fields plus hydraulic response, temperature management and option configuration. |
| Maintenance model | Review servo drives, motors, mechanical transmissions, lubrication, cooling and local diagnostic capability. | Review pumps, valves, seals, filtration, oil condition, cooling, hoses and local hydraulic capability. |
| Energy comparison | Use measured or method-based consumption for a comparable configuration and molding job; the label alone is not a result. | Use the same boundary, machine size, part, resin, mold, cycle and auxiliary scope before comparing consumption. |
If one input is unknown, mark it as an assumption and identify how it will be confirmed before order or acceptance.
Map injection, holding, plasticizing, mold motion, ejection and robot actions, including which motions must overlap.
Record resin, geometry, pressure/flow need, tolerances, quality checks and the current stable process where available.
List hydraulic cores, valve gates, unscrewing, air circuits, hot runner, ejector and mold-protection requirements.
Compare configured electrical, cooling-water, compressed-air and environmental requirements against the actual site.
Assess the plant's electrical, controls, mechanical and hydraulic skills plus the proposed spare-parts and support scope.
Require the same mold, resin, cavities, auxiliaries, quality criteria and measurement boundary for any claimed difference.
The answers deliberately avoid treating an architecture name as proof of energy, precision, cleanliness or process performance.
No architecture label proves the result. Compare machines of similar size and configuration under the same part, mold, resin, cycle, utility and auxiliary boundary using a defined measurement method. Idle behavior and the actual production cycle can change the comparison.
No. Drive architecture is only one input. The selected injection unit, sensors, controller, mechanical condition, mold, resin, process setup, environment and measurement method all affect the result. Ask for evidence under the intended production conditions.
Some configurations can include integrated or external hydraulic equipment, but availability, circuit count, control logic, heat load and guarding must be confirmed for the proposed machine and mold. Do not infer the option from the all-electric label.
Not automatically. Compare the actual injection unit, control response, pressure and flow capability, screw choices, mold functions and process evidence. A broad marketing category cannot replace model- and application-specific data.
Include the part and resin, mold drawing and functions, total shot, cycle sequence, motions that must overlap, utilities, robot/peripheral interfaces, maintenance capability, destination requirements and the acceptance method for quality, output and consumption.
Record the motion sequence, mold functions, resin, utilities, maintenance capability and common test boundary before requesting a configuration.
Build the machine brief