EX-GR Series Multi-Material Pulverizer Machine

Versatile High-Performance Pulverizing from EXTRUTEX

The EX-GR Series from EXTRUTEX is a robust multi-material pulverizing platform developed for processors who need reliable size reduction across plastics, organic materials, minerals and specialty powders. Designed in Austria and manufactured in our advanced facilities in Nanjing and Shanghai, China, every machine combines European engineering principles with high-volume production capability and world-class electrical components from ABB, Siemens and Schneider Electric.

EXTRUTEX created the EX-GR Series to solve the practical challenges faced by factories that process more than one type of feedstock. Many conventional pulverizers are optimized for a narrow range of plastics and struggle when operators switch to wood, grains, minerals or powder-metallurgy materials. The EX-GR platform uses a specially developed grinding system that maintains consistent particle size and throughput across this wide material spectrum while protecting product quality and minimizing heat generation.

All product-contact surfaces are manufactured from German-grade stainless steel to ensure purity, corrosion resistance and long service life. Electrical systems are sourced exclusively from leading European brands, guaranteeing precise control, energy efficiency and global spare-parts support. The result is a machine that delivers industrial reliability whether it is reducing acrylic scrap, grinding PU shoe-sole waste, processing ABS regrind, or preparing mineral and metallurgical powders.

In-Depth Technology & Application Guide – EX-GR Series

Industrial pulverizing is a foundational process step for countless manufacturing sectors. Whether the goal is to reclaim acrylic production scrap, convert polyurethane shoe-sole waste into reusable powder, prepare ABS regrind for injection molding, or produce fine powders from wood, grains, minerals, clay and powder-metallurgy feedstocks, the quality of the pulverizer directly affects downstream efficiency, product consistency and operating cost. The EX-GR Series from EXTRUTEX was developed specifically to meet these diverse requirements with a single, robust platform.

Conventional pulverizers are frequently optimized for one material family—typically thermoplastics—and lose efficiency or generate excessive heat when operators switch to organic materials, minerals or metal powders. Heat-sensitive polymers can melt or agglomerate; abrasive minerals rapidly wear standard grinding elements; fibrous materials such as wood can bridge or produce uneven particle distributions. The EX-GR platform addresses these challenges through a carefully engineered grinding chamber, optimized disc or rotor geometry, and precise control of speed, clearance and airflow.

The core of every EX-GR machine is a high-performance size-reduction system that balances impact, shear and attrition. Material enters the grinding zone and is progressively reduced under controlled conditions. Because energy input is distributed across a well-designed surface area, temperature rise remains moderate even at high throughput. This is particularly important when processing acrylic, certain grades of ABS, or heat-sensitive polyurethane compounds that can degrade or yellow under excessive thermal load. Optional cooling jackets and enhanced airflow systems further protect sensitive materials.

Particle-size control is achieved primarily through adjustable clearance between grinding elements and variable rotor speed. Operators can target fine powders suitable for powder metallurgy or additive manufacturing, or produce coarser free-flowing grades for recycling and compounding. The resulting powder exhibits good flow characteristics because the grinding action produces relatively uniform particle morphology when the machine is correctly set for the feedstock.

Material of construction is critical when a single machine must handle plastics, organics, minerals and metal powders. EXTRUTEX specifies German-grade stainless steels for all product-contact surfaces. These alloys combine hardness, wear resistance and corrosion protection, maintaining cutting or grinding edges longer than commercial-grade steels. For highly abrasive applications such as mineral grinding or certain powder-metallurgy alloys, optional hard-facing or specialized wear-resistant coatings can be applied to extend service intervals.

The electrical architecture of the EX-GR Series reflects the same commitment to quality and global supportability. Main drive motors are high-efficiency units from ABB or Siemens, selected for continuous industrial duty and precise speed control via variable-frequency drives. Control cabinets incorporate Schneider Electric components for power distribution, safety interlocking and operator interfaces. Standardization on these internationally recognized brands simplifies maintenance, training and spare-parts logistics for customers operating in multiple countries.

From a mechanical standpoint the machines are built on heavy-duty frames that minimize vibration transmission to the surrounding plant. Rotor assemblies are dynamically balanced to high standards, contributing to quiet operation and extended bearing life. Access doors and inspection ports are designed for rapid cleaning and change-over between material grades—an essential feature for toll processors and multi-product factories that switch between acrylic, PU, ABS, wood or mineral feeds several times per week.

Dust management and operator safety receive particular attention. The grinding chamber is sealed to contain fine particles, and the machines are designed for straightforward connection to industrial dust-collection systems. Safety interlocks prevent access to moving parts during operation, and emergency-stop circuits follow European machine-safety principles even though final assembly occurs in China. These features help plants meet internal safety standards and external regulatory requirements.

Capacity scaling across the EX-GR family follows a clear progression. The EX-GR450, powered by a 60 HP main motor, serves medium-volume production lines and facilities that process multiple materials in batch mode. The EX-GR600 with its 100 HP drive covers higher continuous throughput requirements, while the EX-GR800 (150 HP) is intended for large-scale industrial operation. Frame sizes, grinding-chamber volumes and overall footprints increase correspondingly, as shown in the technical specifications table.

Because manufacturing takes place in Nanjing and Shanghai under Austrian design supervision, EXTRUTEX achieves an attractive balance of performance and cost. Critical components—grinding elements, bearings, seals and the complete electrical package—are either imported from Europe or produced to exacting European specifications. Final assembly and factory acceptance testing are performed under controlled conditions, with full documentation packages that meet international quality-system expectations.

Applications for the EX-GR Series span multiple industries. Acrylic processors use the machines to reclaim edge trim and rejected parts into high-quality regrind or fine powder for re-processing. Footwear manufacturers convert polyurethane shoe-sole scrap into reusable material, reducing waste and raw-material cost. ABS compounders and recyclers produce consistent regrind for injection molding and extrusion. Wood-product plants generate fine wood powders for composite panels or fillers. Grain and agricultural processors prepare flours or fine powders for further processing. Mineral and clay producers create controlled particle-size distributions for ceramics, refractories or fillers. Powder-metallurgy operations rely on precise size reduction to prepare metal powders with the flow and packing characteristics required for pressing and sintering.

In each of these applications the combination of controlled particle size, moderate heat history, stainless-steel construction and European electrical reliability delivers measurable advantages: higher material recovery rates, more consistent downstream processing, reduced contamination risk and lower long-term maintenance cost.

Long-term ownership economics are further improved by the use of standardized European electrical components. Service technicians familiar with ABB, Siemens or Schneider systems can diagnose and repair control issues without specialized training unique to proprietary hardware. Spare motors, drives and contactors are available through global distribution networks, minimizing downtime risk for plants operating far from major industrial centers.

EXTRUTEX supports customers throughout the equipment lifecycle. Application engineers can evaluate specific materials and target particle sizes, recommend the optimal model and configuration, and arrange process trials. Installation supervision, operator training and preventive-maintenance programs are available. For customers with unique requirements—explosion-proof execution for certain metal powders, special surface finishes for high-purity applications, or integration with upstream shredders and downstream classification systems—our engineering team develops customized solutions while retaining the core reliability of the EX-GR platform.

The design philosophy behind the EX-GR Series can be summarized in three principles. First, true multi-material capability: the machine must perform efficiently on plastics, organics, minerals and metal powders without requiring extensive reconfiguration. Second, European-level quality of materials and electrical systems, even when final assembly occurs in China. Third, practical industrial usability: easy cleaning, rapid change-over, straightforward maintenance and clear operator interfaces.

These principles translate into daily operating advantages. A plant that processes acrylic in the morning and mineral fillers in the afternoon can clean the stainless-steel grinding chamber quickly and switch materials with confidence that residual contamination will be minimal. A footwear recycler can run PU shoe-sole scrap at high throughput without excessive heat that would degrade the polymer. A powder-metallurgy facility can produce the tight particle-size distribution required for consistent green-body density. In every case the EX-GR machine supports higher overall equipment effectiveness and lower cost per kilogram of powder produced.

Energy efficiency is another important consideration. High-efficiency motors from ABB or Siemens, combined with optimized grinding geometry, keep specific energy consumption competitive. Variable-frequency drives allow operators to match rotor speed to the material and target size, avoiding unnecessary energy use. Over the lifetime of the machine these savings become substantial, especially on the larger EX-GR600 and EX-GR800 models that may run continuous shifts.

Noise and vibration levels are controlled through heavy-duty framing, precision balancing and careful isolation of the grinding chamber. This contributes to a more comfortable working environment and reduces the risk of fatigue-related component failures. Plants that must meet strict occupational noise limits benefit from the inherently quieter operation of a well-engineered disc or rotor system compared with older high-impact hammer mills.

Looking ahead, the EX-GR platform is designed for longevity and upgradeability. As new materials enter the market or process requirements evolve, the basic mechanical structure and electrical architecture remain relevant. Additional sensors, improved dust-collection interfaces or enhanced cooling systems can be integrated without redesigning the core machine. This future-proofing protects the customer’s capital investment.

In summary, the EX-GR Series Multi-Material Pulverizer from EXTRUTEX represents a practical synthesis of Austrian mechanical design, German material and electrical standards, and efficient Chinese manufacturing. It is engineered for processors who need one reliable platform to handle acrylic, PU shoe soles, ABS plastics, wood, grains, minerals, clay, powder metallurgy and related materials. Whether you are upgrading an existing size-reduction line or specifying equipment for a new multi-product facility, the EX-GR family offers a proven route to consistent powder quality, high uptime and favorable long-term operating economics.

EXTRUTEX remains committed to continuous improvement of the platform. Feedback from customers operating in plastics recycling, footwear, wood products, mineral processing and powder metallurgy is regularly incorporated into design refinements. The result is a machine family that stays aligned with real-world industrial needs while preserving the core strengths of robust construction, material flexibility and European-quality components.

Why Choose EXTRUTEX EX-GR Series?