Product Descriptions
General Overview - BOY Electric Series and the Positioning of the BOY 50 Electric
The BOY 50 Electric is an advanced production platform positioned in the mid-tonnage segment of Dr. BOY's all-electric injection molding machine family. The BOY Electric series combines the proven mechanical robustness of the classic servo-hydraulic E series with fully electric drive systems for the injection, dosing, and ejector axes.
This engineering concept enables highly dynamic movements, parallel process execution, reduced energy consumption, and maximum positioning accuracy. The BOY 50 Electric is specifically designed for technical components, medical parts, electronic housings, and products with complex or highly sensitive geometries.
Clamping Unit - 500 kN Two-Platen Cantilever Design
The BOY 50 Electric is equipped with a two-platen, cantilever-type clamping unit delivering a clamping force of 500 kN. While clamping movement is generated via a servo-hydraulic system, the mold area itself is completely free of oil and grease.
Clamping unit technical data:
- Clamping force: 500 kN
- Tie-bar spacing (horizontal × vertical): 360 × 335 mm
- Maximum daylight between platens: 650 mm
- Maximum adjustable mold opening stroke: 400 mm
- Minimum mold height: 250 mm
- Maximum mold weight on moving platen: 400 kg
- Mold opening force: 38 kN
- Mold closing force: 24.4 kN
- Maximum ejector stroke: 150 mm
- Ejector forward / return force: 20 / 20 kN
The two-platen cantilever design provides excellent access to the mold area and ample space for automation systems.
Injection Unit - All-Electric E-Injection and E-Dosing
The BOY 50 Electric operates with the SP 16-96 thermoplastic injection unit, where both injection and screw dosing movements are performed entirely by electric motors. This eliminates the response delays and precision limitations sometimes associated with hydraulic systems.
Available screw diameters:
- 14 / 18 / 22 / 24 / 28 / 32 mm
Injection unit technical data, depending on screw diameter:
- Maximum theoretical stroke volume: 6.2 - 76.4 cm³
- Maximum theoretical shot weight (PS): 5.6 - 69.5 g
- Theoretical injection flow rate: 25.7 - 134.3 cm³/s
- Maximum specific injection pressure: 1,255 - 2,739 bar
- Maximum injection speed: 167 mm/s
- Maximum screw stroke: 40 / 80 / 95 mm
- Nozzle contact force: 48 kN
- Nozzle retraction stroke: 205 mm
- Screw torque: 75 - 200 Nm
- Screw speed: 400 - 500 rpm, continuously adjustable
- Screw recovery force: 30 - 44 kN
- Heating power (nozzle + barrel): 2,560 - 5,800 W
- Material hopper capacity: 20 liters
The all-electric injection system uses a dedicated force sensor to measure injection force directly on the screw mechanism, ensuring highly accurate and repeatable injection profiles.
E-Ejector - Fully Electric Ejector System
The BOY 50 Electric is equipped with a fully electric ejector system instead of a hydraulic ejector. This provides major advantages in applications requiring either very slow or very fast ejector movements.
Key advantages of the electric ejector system:
- Extremely precise position control
- Parallel ejector and mold movements
- Elimination of stick-slip effects
- Reduced mechanical stress on mold and part
- Shorter overall cycle times
Servo Drives and Parallel Motion Capability
One of the core engineering strengths of the BOY 50 Electric is its ability to perform multiple machine movements in parallel within a single cycle.
Parallel operations include:
- Building clamping force during the injection phase
- Ejector operation during mold movements
- Continuous dosing and decompression throughout the cycle
- Stepwise pressure build-up
This architecture reduces cycle times while improving overall process stability.
Control System - Procan ALPHA 6
The BOY 50 Electric is equipped with Dr. BOY's advanced Procan ALPHA 6 control system.
Control system capabilities:
- 9-stage injection speed control
- 9-stage injection pressure control
- 9-stage holding pressure control
- Holding pressure switchover based on pressure, stroke, or time
- Closed-loop injection and back-pressure control
- Production and process monitoring functions
- USB, Ethernet, and OPC interfaces
- EUROMAP 67 robot interface
Energy Efficiency and General Technical Data
Thanks to its fully electric axes and optimized servo-hydraulic clamping system, the BOY 50 Electric achieves very low energy consumption.
General technical data:
- Total installed power: 23.66 - 26.9 kW
- EUROMAP 6 dry cycle time: 1.9 s at 252 mm stroke
- Hydraulic system pressure: 180 bar
- Oil tank capacity: 60 liters
Machine Dimensions and Weight
The BOY 50 Electric offers a compact footprint within the 500 kN class.
Physical dimensions:
- Dimensions (L × W × H): 3,110 × 1,098 × 2,008 mm
- Footprint: 3.41 m²
- Net weight (without oil): 2,600 kg
- Gross weight: 3,345 - 3,645 kg
Application Fields
The BOY 50 Electric is widely used in the following applications:
- Technical and high-precision plastic components
- Medical and laboratory products
- Electrical and electronic components
- Micro and thin-wall parts
- Automated high-volume production cells
Conclusion - Why Choose the BOY 50 Electric?
The BOY 50 Electric injection molding machine combines all-electric injection, dosing, and ejector systems with a 500 kN clamping force and an advanced control architecture to deliver exceptional precision and energy efficiency. Its parallel motion capability, oil-free mold area, and compact design make it ideal for clean production environments and high-value manufacturing applications.
For production scenarios where precision, cycle time optimization, and low operating costs are critical, the BOY 50 Electric stands out as a reliable and state-of-the-art injection molding platform.
