Precision Twin-Screw Elements | Core Drive Parts for Extrusion Processing
Precision twin-screw elements stand as the indispensable core transmission components for extrusion production lines. Manufactured with rigorous craftsmanship and premium materials, these elements are engineered to tackle common industry pain points including rapid wear, insufficient torque transfer, poor fitting accuracy and short equipment lifespan. Built for heavy-duty, continuous extrusion operations, they boost overall line efficiency, cut down maintenance downtime and deliver long-term reliability for all types of plastic extrusion applications.
Key Product Benefits
- Outstanding Wear & Corrosion Protection: Crafted from high-performance alloy materials paired with professional surface hardening processes, these screw elements resist abrasion from high-filled polymer compounds and corrosion from chemical raw materials, maintaining stable performance even in the harshest long-term operating environments.
- Efficient High-Torque Power Transfer: Optimized thread profile design ensures smooth, lossless power transmission, delivering consistent high torque output under heavy loading conditions to enhance extrusion productivity and guarantee uniform product quality.
- Micron-Level Precision Matching: Ultra-precision machining delivers perfect fit with twin screws, minimizing operational vibration and noise, eliminating material backflow and leakage, and maximizing transmission efficiency for stable extrusion processing.
- Prolong Overall Extruder Service Life: By reducing friction and wear on mating components, these screw elements effectively extend the service cycle of the entire extrusion machine, lowering frequent part replacement costs and long-term operational expenses.
Technical Specifications
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Parameter
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Detailed Specification
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Product Name
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Parallel Twin Screw Extruder Elements
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Standard Hardness
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HRC 58–62 (Deep Hardened)
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Core Materials
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38CrMoAlA,Tool Steel, Alloy Steel, WR13, HIP Steel
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Processing Tech
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CNC Precision Machining & Vacuum Heat Treatment
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Diameter Range
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Ø20mm – Ø133mm (Customizable up to Ø300mm)
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Why Choose Our Extruder Components? (Company Strength)
20+ Years of Material Expertise: We don't just machine parts; we understand the metallurgy behind alloy materials. We know exactly which steel grade fits your specific calcium powder proportion (e.g., 35% CaCO3).
Global OEM Compatibility: Our database covers almost all major international brands. You only need to provide the model or a simple drawing.
Strict Quality Gate: Every shipment includes a Material Certificate and a Dimensional Inspection Report. We offer video outgoing inspections for your peace of mind.
Cost-Effective Logistics: Fast turnaround (30–60days) with reliable international shipping, ensuring your production line never stays idle.
Competitive Comparison: Why BLM is the Smarter Choice
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Feature
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European OEM Brands
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Standard Chinese Parts
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BLM Ultra-Wear Series
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Material Grade
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Premium Imported Steel
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Standard Alloy Steel
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High-Vanadium Tool Steel
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Hardness (HRC)
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60–64
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45–52
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58–62 (Deep Hardened)
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Wear Life (WPC)
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Excellent
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Poor (Frequent Change)
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High (Near-OEM Levels)
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Price Point
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High (Brand Premium)
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Very Low
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Competitive (Factory Direct)
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Lead Time
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12–16Weeks
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4–8 Weeks
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8–12 Weeks (Including Custom)
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Target Applications & Industries
Our screw elements are the "workhorse" for challenging compounding tasks:
WPC (Wood Plastic Composite): Handling high-abrasion wood fiber loads.
PVC Compounding: Resistant to the corrosive nature of rigid and soft PVC.
Masterbatch Production: High-dispersion elements for carbon black and TiO2.
Engineering Plastics: Processing PA6, PA66 + Glass Fiber (up to 50%+).
Biodegradable Plastics: Precise temperature control for PLA/PBAT/Starch blends.
FAQ
Q1: How do I know if these elements will fit my specific extruder brand?
A: We manufacture elements that are 100% interchangeable with major brands like Coperion, Leistritz, and others. We verify fitment through standard serial numbers or custom drawings.
Q2: My process uses 35%+ Calcium Powder. How will your elements hold up?
A: For high-filler (CaCO3) applications like PVC/WPC, we recommend our specialized High-Vanadium Alloy or Bimetallic coatings, which specifically prevent abrasive "scouring" of the screw flights.
Q3: Can you produce custom kneading blocks based on our formula?
A: Yes. We can customize the L/D ratio, stagger angles, and disk thickness to improve mixing efficiency for specialized engineering plastics.
Q4: Do you offer samples for testing?
A: We encourage trial orders. Testing a set of kneading blocks in your most high-wear zone is the best way to prove our durability.
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