Product Descriptions
General Overview - Positioning of the Dr. BOY 25 E Platform
The Dr. BOY 25 E is an injection molding machine developed for small to medium-sized applications, delivering high dynamic performance despite its compact dimensions. This platform, refined since 1968 and with more than 25,000 units delivered worldwide, represents the combination of decades of mechanical engineering experience with modern hydraulic and control technologies.
The core design philosophy of the machine is to provide maximum process control, high repeatability, and broad material compatibility within a minimal footprint. This approach makes the Dr. BOY 25 E an ideal solution for both serial production and technical part manufacturing.
Clamping Unit - 250 kN Cantilever Design
The Dr. BOY 25 E is equipped with a two-platen, tie-bar-less cantilever clamping unit delivering a clamping force of 250 kN. Compared to conventional four tie-bar systems, this design provides significantly improved and unobstructed access to the mold area.
Clamping unit technical data:
- Clamping force: 250 kN
- Maximum daylight between platens: 400 mm
- Adjustable mold opening stroke: 200 mm
- Minimum mold height: 200 mm
- Maximum mold weight on moving platen: 150 kg
- Mold opening force: 17.6 kN
- Mold closing force: 17.6 kN
This structure enables easy insert placement, robot integration, and automation. The cantilever concept is particularly advantageous for cellular manufacturing systems.
Injection Unit - Wide Screw Options and High-Speed Capability
The Dr. BOY 25 E is available with six different injection unit versions and seven screw diameter configurations, allowing the machine to cover a very broad range of part sizes and materials.
Standard screw diameter options:
- 22 mm
- 24 mm
- 28 mm
- 32 mm
Depending on screw geometry, the key injection unit performance values are as follows:
- Maximum theoretical stroke volume: 30.4 - 76.5 cm³
- Maximum theoretical shot weight (PS): 27.7 - 69.5 g
- Injection force: 87 kN
- Maximum specific injection pressure: 1,076 - 2,277 bar
- Theoretical injection rate: 52.6 - 120 g/s
- Screw speed: 250 - 400 rpm (infinitely adjustable)
- Screw recovery force: 38 - 45.7 kN
These values ensure high process reliability for micro injection molding, thin-wall parts, and applications requiring high flow rates.
Differential Injection and Dynamic Performance
One of the key innovations of the Dr. BOY 25 E platform is the differential injection technology used in the 250-11, 250-16, and 250-39 injection units. This system significantly increases injection speed.
Thanks to high-speed pistons and a hydraulic pump with approximately 10 percent higher flow capacity, the following benefits are achieved:
- Shorter dry cycle times
- Improved machine dynamics
- High repeatability
According to EUROMAP 6 standards, dry cycle times can be reduced to as low as 1.24 seconds.
Hydraulic System and Energy Efficiency
The Dr. BOY 25 E is equipped with a servo-motor-driven hydraulic pump system. Hydraulic power is generated only when required by the process.
Hydraulic and energy data:
- Installed motor power: 7.4 kW
- Total installed power: 10.95 - 13.2 kW
- Hydraulic system pressure: 185 bar
- Oil tank capacity: 65 liters
The servo-hydraulic system ensures low energy consumption, quiet operation, and reduced operating costs.
Control System and Operator Interface
The Dr. BOY 25 E features the Procan ALPHA control system, distinguished by its intuitive user interface and advanced process monitoring functions.
Control system capabilities:
- 8-stage injection speed control
- 8-stage holding pressure control
- Closed-loop injection and back pressure regulation
- Holding pressure switchover based on cavity pressure
- USB, Ethernet, and OPC interfaces
- Production monitoring and part counting
This control architecture enables consistent part quality even within very narrow process windows.
Material Compatibility and Process Flexibility
The Dr. BOY 25 E is capable of processing a wide range of material groups, including:
- Thermoplastics
- Elastomers
- LSR and silicones
- Thermosets (duromers)
- Metal and ceramic injection molding feedstocks (PIM technology)
This versatility makes the machine a powerful platform for medical, electronics, automotive, micro-mechanical, and technical part manufacturing.
Machine Dimensions and Layout Advantages
The compact design of the Dr. BOY 25 E offers significant advantages in production space optimization.
Physical dimensions:
- Length: 2,290 mm
- Width: 787 mm
- Height: 1,681 mm
- Footprint: 1.80 m²
- Net weight (without oil): 750 kg
These values position the Dr. BOY 25 E among the most compact machines in its class.
Conclusion - Why Choose the Dr. BOY 25 E?
The Dr. BOY 25 E injection molding machine delivers a highly balanced solution for small and medium-sized injection molding applications through its compact design, high injection speed, wide screw selection, and powerful control architecture. The tie-bar-less clamping unit, differential injection technology, and servo-hydraulic energy management provide both technical and economic added value.
For applications where space limitations, precision, and process reliability are critical, the Dr. BOY 25 E represents a robust and long-term stable injection molding platform.
