DEKUMA RI SERIES
HIGH-PRECISION RUBBER INJECTION MOLDING MACHINES
Dekuma RI Series rubber injection molding machines are injection solutions developed for applications that require high precision, compact design, and stable process control. The RI series provides an ideal platform for manufacturers aiming to produce small and medium-sized technical rubber parts with tight tolerances and high surface quality.
The RI series stands out with repeatable quality and low scrap rates in the production of automotive subcomponents, electrical and electronic parts, precision sealing elements, and technical elastomer components.
DESIGN STRUCTURE AND MACHINE CONFIGURATION OF THE RI SERIES
Dekuma RI series machines are designed according to the vertical clamping - vertical injection principle. This configuration enables short flow paths inside the mold and significantly improves filling accuracy, especially for small-volume parts.
Key design features include:
• Compact, high-rigidity steel machine frame
• Clamping mechanism ensuring precise platen parallelism
• Press structure optimized for small and medium-sized molds
• Low-vibration, stable operating characteristics
• Open architecture suitable for automation and robot integration
This design makes the RI series an ideal solution for injection applications requiring high precision.
RUBBER INJECTION TECHNOLOGY AND OPERATING PRINCIPLE
In RI series machines, the rubber compound is plasticized under low shear stress. The screw and barrel geometry is specially designed to prevent premature vulcanization and thermal degradation of the rubber. The prepared compound is injected into the mold using a controlled injection profile.
Process steps include:
• Controlled plasticization of the rubber compound
• Precise, multi-stage injection
• Molding under stable clamping force
• Vulcanization and curing
• Automatic or semi-automatic part removal
This process ensures excellent dimensional accuracy and surface quality, particularly for small-volume and functional rubber parts.
RI SERIES MODEL RANGE AND CLAMPING FORCE OPTIONS
The Dekuma RI series is available with various clamping force options for applications requiring precision injection.
Typical clamping force ranges include:
• 80 tons
• 120 tons
• 160 tons
• 200 tons
This tonnage range provides an ideal solution for the production of small and medium-sized rubber components.
TECHNICAL AND NUMERICAL SPECIFICATIONS
Typical technical parameters of Dekuma RI series machines are provided within the following ranges:
Clamping Force
• 800 kN - 2000 kN
Injection Unit
• Injection volume: 30 - 250 cm³
• Injection pressure: 1400 - 2000 bar
• Injection speed: multi-stage, finely adjustable
Screw Diameter
• 25 mm - 45 mm
Plasticizing Capacity
• 3 - 15 kg/hour
Mold Opening Stroke
• 250 - 450 mm
Platen Dimensions
• 350 × 350 mm - 500 × 500 mm
Heating System
• Multi-zone barrel heating
• PID-controlled temperature management
These technical values can be customized according to part geometry and rubber type.
SERVO HYDRAULIC SYSTEM AND PROCESS CONTROL
The servo hydraulic system used in RI series machines enables high-precision control of injection and clamping movements.
Key advantages include:
• Low energy consumption
• Stable injection pressure
• Fast response time
• Low noise levels
• Long system and component service life
This structure guarantees excellent process repeatability even for small-volume parts.
AUTOMATION AND INDUSTRY 4.0 COMPATIBILITY
Dekuma RI series machines are fully compatible with automation solutions and digital manufacturing infrastructures.
Supported integrations include:
• Robotic part removal systems
• Automatic insert placement
• Conveyor systems
• Vision inspection and quality control
• Production data collection and reporting
These features ensure traceability and consistent quality, especially in automotive and electrical-electronic applications.
APPLICATION AREAS
RI series machines are widely used in the following applications:
• Automotive technical rubber components
• Precision sealing elements
• Electrical and electronic insulation parts
• Small-sized elastomer components
• Functional and technical rubber products
In these applications, the RI series stands out with high precision and low scrap rates.
ADVANTAGES OF THE DEKUMA RI SERIES
• Compact and precision-focused injection design
• Ideal structure for small and medium-sized parts
• Stable and repeatable production
• Low energy consumption
• Compatibility with automation and line integration
• Long machine service life and global service infrastructure
