EOS sP (70-160 tonnes)


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EOS Servo Hydraulic Injection Molding Machine



Accurate • Versatile • Compact

Features the TACTUS™ Controller

EOS Servo Hydraulic Injection Molding Machine side view

The EOS sP Series are two-platen clamp, servo-pump, hydraulic injection molding machines available in 70-, 110- and 160-tonne models. An extremely compact footprint with very generous part drop area is achieved through the cantilever clamping unit design combined with a twin ram injection unit which features a hydraulic reciprocating screw. Injection capacities range from 2.4oz to 21.2oz (PS) across the line. EOS injection molding machines are equipped as standard with:

  • TACTUS™ Touchscreen PC with Powerlink, user-friendly interface with full range of control parameters
  • Highly efficient servo-motor driven gear pump system
  • Innovative cantilever clamping unit with very generous tie bar spacing to accommodate larger molds, and a moving platen that rides on linear bearings, providing excellent parallelism between the platens and ensuring cleanliness in the molding area due to the absence of lubrication oil
  • Robust twin cylinder injection unit
  • Extremely compact footprint
  • AMICO wireless remote service access




EOS Servo Hydraulic Injection Molding Machine specification sheet


CLAMPING UNIT Servo Hydraulic Machine clamping unit

  • Cantilever two-platen clamping unit
  • Euromap or SPI platen configuration
  • Hardened tie bars
  • Linear bearings for moving platen guidance and support
  • Three‐stage mold closing speed profile
  • Three‐stage mold opening speed profile
  • Mold closing and opening stages governed through closed loop with proportional control valve
  • Digital reading of moving platen position displayed on operator interface
  • Digital reading of clamping force displayed on operator interface
  • Two‐stage ejection speed profile
  • Ejection force control
  • Digital reading of ejector position given on operator interface
  • Repeated ejection with stroke and speed control
  • Ejector return signal



  • Injection unit with two hydraulic cylinders
  • Injection unit sliding on linear bearings
  • General purpose screw profile, suitable for most types of thermoplastic materials
  • Servo hydraulic Machine Injection UnitBimetallic plasticizing cylinder
  • Nitrided screw
  • Ceramic heater bands
  • Alarm threshold for set temperature range
  • Injection speed and pressure profiles
  • Switch to holding pressure triggered by screw position, hydraulic pressure or time
  • Digital reading of screw position displayed on operator interface
  • Adjustable screw rotation speed profile
  • Screw rotation delay
  • Adjustable back‐pressure profile
  • Digital reading of back‐pressure displayed on operator interface
  • Decompression before and after screw recovery
  • Intrusion molding program
  • Auto purge program
  • Stainless steel hopper



  • Single fixed displacement gear pump with servo motor and Baumuller drive with P/Q control
  • Digital reading of hydraulic circuit pressure displayed on operator interface
  • Monitoring of oil level, temperature and filter blockage
  • Oil temperature control system
  • Automatic cooling water shut-off valve
  • Oil preheating program
  • Oil filter in pump delivery and/or return circuit
  • Oil cooling heat exchanger
  • Oil gauge


ELECTRICAL SYSTEM Machine Electrical system

  • Servo drive
  • Remote starter with overload cutout
  • Interlocked main switch to prevent electrical cabinet from being opened when press is energized
  • Fuses and static relays that control plasticizing cylinder heating
  • Fan for air circulation in electrical cabinet
  • LED indicators on solenoid valves
  • Fully labelled electrical circuits
  • Conforms to Euromap, UL, and CSA electrical standards



  • Flow meter with adjustable independent circuits with water temperature and flow rate indication (One circuit is used for throat cooling with the remaining circuits available for mold cooling)



  • Part discharge outlet accessible on three sides
  • Sound insulated motor‐pump assembly housing
  • Lubricating oil recovery trough
  • Anti-vibration mounting pad holes



  • Constructed in compliance to essential requirements of Machinery Directive 2006/42/CE and subsequent amendments
  • All models CE certified by an European certification organization
  • Devices comply to European Standard EN 201 and ANSI/SPI B151.1-2007
  • Rear mold protection with double interlocking device and pump drive motor shutdown
  • Monitoring of correct operation of hydraulic and electric safety devices
  • Interlocked nozzle purge guard


TACTUS™ TOUCHSCREEN CONTROL Injection Molding Machine Tactus Control

  • TACTUS™ touchscreen controller with Powerlink and resistive technology (can be used with gloves)
  • 21.5″ Color TFT LC display with 1920×1080 resolution
  • IP54 protection
  • Unique integrated grip strip allows easy hand positioning
  • Front mounted USB socket
  • Favorites function
  • Cycle optimizer function
  • Configurable function key layout
  • Free programming capability for special cycle sequencing
  • Auto-calibration program for all input and output channels
  • Dedicated display area for viewing of main process parameters
  • Password and data input lock-out key
  • Multi-language capability
  • Hour counter
  • Perpetual clock
  • Page with press technical specifications
  • Cycle times with sequence alarm page
  • Three-stage mold closing with both speed and position adjustment
  • Two pressures during mold closing with fully adjustable mold safety feature
  • Mold pre‐feed
  • Closed mold feedback signal
  • Three-stage mold opening with both speed and position adjustment
  • Closed loop control of mold opening position
  • Cooling timer
  • Screw and mold maintenance page
  • Lubrication cycles
  • Clamping force readout
  • Multi-stroke ejector
  • Two ejection speed steps
  • Partial return stroke during repeated ejection
  • Adjustable ejector output and return pressure
  • Interlocking of ejector, air blow and core pulling
  • Closed loop speed control for injection stage
  • Closed loop pressure control for holding stage
  • 10-Stage injection speed control with selectable number of stages
  • Switching to holding pressure by time, hydraulic pressure or screw position
  • 10-Stage holding pressure control with selectable number of stages
  • Screw decompression before and after screw recovery
  • Five-stage closed loop screw rotation speed control with selectable number of stages
  • Five-stage closed loop back pressure control with selectable number of stages
  • Self‐adjusting shot size control system
  • Speed and pressure for control for carriage movements
  • Program to automatically calculate the required shot size according to material type and part weight
  • Barrel temperature PID control
  • Self-tuning program for cylinder temperature control
  • Weekly clock to set the time the cylinder turns on and shuts off and three additional outlets
  • Quality control (20 parameters) with direct display of the last 200 cycles in graphic form
  • Production control
  • High resolution graphics for real pressures, screw speed, screw position and cavity pressure
  • Sample curve for each data item can be saved in graph
  • Zoom
  • Set points displayed
  • Fill Index
  • Memo page
  • Interface for graphic or other types of printers
  • Alarm page showing current faults with description and instructions on how to reset
  • Real machine status (analog inputs and outputs) at time fault occurred
  • Events history with possibility to view last 200 events regarding faults, shutdowns, and changes made to parameters
  • Diagnostics page for digital inputs, analog inputs and analog outputs
  • Self‐adjusting functions for all analog inputs and outputs
  • Internal archive for more than 500 molds
  • Parallel interface and USB port for printer

Molding Machine Tactus Controller

Servo Pump System


Servo Pump SystemThe EOS sP is powered by a servo motor driven gear pump system, using the very latest technology from renowned component suppliers such as Rexroth and Baumuller. The benefits of this system are many and offer a much greater overall efficiency, the most important of which are:

  • Improved process control reduces reject levels
  • Lower power consumption results in a lower cooling requirement
  • Much less noise for a better working environment
  • Longer oil life, longer lasting hydraulic components and reduced maintenance

These performance enhancements combine to produce a more profitable molding process for the owner. This arrangement, coupled with special energy optimizing software from Negri Bossi, provides the user with excellent energy efficiency, reduced power consumption, and a more profitable manufacturing process.

Energy Consumption chart

An analysis of energy consumption during the various phases of a typical molding cycle shows that the servo pump solution produces a superior result, when compared to more traditional hydraulic power systems. The following is one example showing how the EOS sP provides the customer with important savings in energy usage.

Energy consumption chart

Noise levels are much reduced, producing an improved working environment.

Servo Hydraulic Molding Machine Noise Levels



  • Core Pull MP/FP
  • Air Blast MP/FP
  • Proportional Valve for Hydraulic Ejection
  • E12 Adapter Plug
  • E67 Robot Interface
  • Special Screw (Wear Resistant, Corrosion Resistant, Mixing, Barrier, Low Compression, etc.)
  • Special Barrel (Corrosion Resistant, High Wear Resistant)
  • Barrel Liner
  • Special Tip Design
  • Extended Nozzle Body
  • Additional Nozzle Zone
  • Mold Valve Gate Hydraulic
  • Mold Valve Gate Pneumatic
  • Hydraulic Shut-Off Nozzle – Pin
  • Hydraulic Shut-Off Nozzle – Bolt
  • Transformer(s)
  • Integrated Hot Runner
  • Mold Pressure Transducer Interface
  • Gas Injection Interface
  • Data Logging Interface
  • RJG Process Monitoring Interface
  • Special Paint
  • Additional Flowmeters
  • Closed Loop Feed Throat Cooling
  • 100 mm Reduced Mold Height
  • PVC Kit
  • Thermoset Kit
  • LSR Kit
  • FMC®
  • Power Outlet(s)
  • Color Feed Signal
  • Photocell
  • Directional Parts Chute
  • Magnetic Platens
  • Hydraulic Mold Clamps
  • Rotary Table
  • AMICO System Services


EOS sP END MARKET APPLICATIONS Products made with EOS machine

  • General Small Size Parts
  • Medical
  • Automotive
  • Construction
  • Industrial
  • Appliance
  • Household
  • Aerospace
  • Electronic & Telecomm
  • Technical Molding