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Hybrid electro-hydraulic series ET / ETU

Hydraulic clamping – electric injection

Built for high-precision parts.

A servo-electric injection unit doses and injects with electric precision, while a servo-driven hydraulic clamp delivers the force — electric repeatability with hydraulic robustness, on a vertical machine made for inserts.

  • 0.01 mmcontrol precision
  • ±2 %repeatability
  • 40–70 %energy saving
  • XL dimensionOption for rotary tables
ETU-1600.2R.SF.J hybrid electro-hydraulic vertical rotary injection moulding machine
ETU-1600.2R.SF.J · low-table rotary hybrid

Hybrid electro-hydraulic Hydraulic clamping – electric injection

Electric injection. Hydraulic clamping.

Part quality in insert moulding is decided in the injection unit: how exactly the screw doses and how precisely it injects and holds pressure. On the ET / ETU series that motion is servo-electric — controlled to 0.01 mm and repeatable within ±2 %.

The clamp stays hydraulic, driven by a servo pump (max. 140–175 kg/cm²) that only draws energy when it works. The result: the accuracy and low consumption of electric injection, with the clamping force, robustness and service-friendliness of a hydraulic vertical clamp.

Electric injection
  • Servo-electric dosing
  • Servo-electric injection & holding
  • 0.01 mm control precision
  • ±2 % repeatability
Hydraulic clamping
  • Vertical hydraulic clamp
  • Ejection & table drive
  • Servo pump runs on demand
  • 40–70 % less energy

Advantages

Six reasons to choose the hybrid series.

High precision

Servo-motor precision control reaches 0.01 mm, with a repeatability of ±2 %. Shot after shot, the part stays the same — the basis for precision overmoulding.

More efficient

Electric servo injection and a servo-driven hydraulic clamp: high efficiency and energy conversion, short cycles and low energy consumption.

More convenient

Ergonomic working conditions — the work table can be lowered to below 850 mm, so the operator loads inserts at a natural height.

High cost-effectiveness

Original German design and manufacturing process, technology and quality comparable with European machines — mass-produced, so the price stays competitive.

Smarter control

A more advanced control system with more powerful and accurate CPU control — 2 ms program scan and stable temperature control within ±0.5 °C.

More energy-efficient

Energy savings of 40–70 % compared with conventional hydraulic vertical machines.

Where it pays off

Parts that have to be right every shot.

  • Connectors & terminals — metal contacts overmoulded with tight positional tolerance.
  • Sensors & electronics — encapsulation of sensitive inserts at controlled pressure.
  • Precision metal overmoulding — bushings, pins and stampings in automotive parts.
  • Medical & optical parts — small shots where repeatability decides the scrap rate.

Smarter control system

  • Resistive colour touch screen
  • Intel processor — efficient, accurate CPU control with a 2 ms program scan cycle
  • Action sequence programmable online
  • Automatic adjustment of action slope (ramps)
  • Stable temperature control, ≤ ±0.5 °C
  • Remote fault diagnosis
  • Distributed control over the VARAN bus — easy module expansion
  • Any national language, with rich quality-management functions

Technical data

ET / ETU series — full specifications

Choose the table type. Screw-dependent values are shown per screw option; on a phone, scroll the tables sideways.

Vertical clamp, fixed lower mould — the hybrid base machine.

ET · ET-400 – ET-850
ModelET-40040 tET-60060 tET-70070 tET-85085 t
Injection unit
Screw diameter mmØ16Ø18Ø20Ø22Ø22Ø25Ø28Ø25Ø28Ø32Ø28Ø32Ø36
Screw stroke mm70100110120
Theoretical shot volume cm³141721263749615367887396122
Max. shot weight (PS) g / oz12/0.415/0.519/0.623/0.833/1.1643/1.5154/1.9048/1.760/2.178/2.765/2.386/3108/3.8
Injection pressure kg/cm²2800280025002200270022001800270022001700270022001700
Holding pressure kg/cm²2200220020001750212017501440212017501360212017501360
Injection rate cm³/s40–7050–8962–10975–13275–13298–171123–21598–171123–215160–281123–215160–281203–356
Injection speed mm/s200–350200–350200–350200–350
Screw speed r/min400400400400
Locating ring diameter mmØ100Ø100Ø120Ø120
Temperature control zones3344
Hopper capacity L20203030
Nozzle mmSR10 × Ø3SR10 × Ø3SR10 × Ø3SR10 × Ø3
Nozzle protrusion from platen mm30353535
Clamping unit
Clamping force t40607085
Mould opening force t4.257.210.5
Min. mould height mm150/200150/200200/250200/250
Opening stroke mm200200250250
Max. open daylight mm350/400350/400450/500450/500
Tie-bar distance mm415 × 255460 × 310500 × 340500 × 340
Ejector stroke mm40606060
Ejector force t1.32.72.72.7
Power
Max. hydraulic pressure kg/cm²140140140140
Oil tank capacity L100120120150
Servo pump displacement L/min50606078
Barrel heating power kW3.54.555
Cooling water L/min25353540
Machine
Dimensions (L × W × H) m1.9 × 1.1 × 3.31.9 × 1.2 × 3.31.8 × 1.1 × 3.61.8 × 1.1 × 3.6
Machine weight t22.433.1
Work table height mm98799511801180
ET · ET-1000 – ET-3500
ModelET-1000100 tET-1200120 tET-1600160 tET-2100210 tET-2500250 tET-3500350 t
Injection unit
Screw diameter mmØ36Ø42Ø42Ø46Ø46Ø50Ø46Ø50Ø46Ø50Ø46Ø50
Screw stroke mm150180200200200200
Theoretical shot volume cm³152207249298332392332392332392332392
Max. shot weight (PS) g / oz136/4.8185/6.5222/7.8266/9.4296/10.4350/12.3296/10.4350/12.3296/10.4350/12.3296/10.4350/12.3
Injection pressure kg/cm²220016502200200020001800200018002000180020001800
Holding pressure kg/cm²175013201750160016001440160014401600144016001440
Injection rate cm³/s203–356276–484276–484332–581332–581392–686332–581392–686332–581392–686332–581392–686
Injection speed mm/s200–350200–350200–350200–350200–350200–350
Screw speed r/min300300300300300300
Locating ring diameter mmØ120Ø120Ø120Ø120Ø120Ø120
Temperature control zones444566
Hopper capacity L303030303030
Nozzle mmSR10 × Ø3SR10 × Ø3.5SR10 × Ø3.5SR10 × Ø3.5SR10 × Ø3.5SR10 × Ø3.5
Nozzle protrusion from platen mm353540404550
Clamping unit
Clamping force t100120160210250350
Mould opening force t111216181823
Min. mould height mm200250300350350350
Opening stroke mm250300300300400450
Max. open daylight mm450550600650750800
Tie-bar distance mm560 × 360600 × 400660 × 630720 × 670720 × 700830 × 600
Ejector stroke mm75757575100100
Ejector force t3.94.65.36.26.36.3
Power
Max. hydraulic pressure kg/cm²140140140140140140
Oil tank capacity L240240240300360450
Servo pump displacement L/min120120120150184220
Barrel heating power kW5.210.712.512.512.512.5
Cooling water L/min454550606070
Machine
Dimensions (L × W × H) m1.9 × 1.4 × 3.82.2 × 1.5 × 4.62.3 × 1.5 × 4.72.3 × 1.6 × 5.22.4 × 1.6 × 5.32.5 × 1.8 × 5.7
Machine weight t3.55691012
Work table height mm118012101210140016001860

Specifications are for reference only; design is subject to change without prior notice. PS = polystyrene. ETU-2500 XL = enlarged rotary table.

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