92mm BCT92 Reverse Mixing Screw Element BC92 Co-Rotating Twin Screw Extruder Parts

BCT92 Reverse Mixing Screw Element | BC92 Co-Rotating Twin Screw Extruder Spare Parts

BCT92 Reverse Mixing Screw Element is specially manufactured for BC92 co-rotating twin screw food extruder. Featuring left-hand reverse flight geometry, it creates flow resistance against forward material movement, building stable melt backpressure, raising barrel filling ratio and extending material residence time.
This element is widely installed in front of vacuum vent sections to form reliable melt sealing, effectively preventing material overflow and significantly improving devolatilization and moisture removal efficiency. Compared with reverse kneading blocks, this reverse screw segment delivers stronger pressure-building capacity with moderate shear, avoiding excessive heat accumulation and starch scorching for heat-sensitive food materials.
Food-grade mirror polishing is available, smooth surface without stagnant dead zones for easy CIP cleaning. Internal spline fully complies with original BCT92 specifications, compatible with all standard conveying elements, kneading blocks and transition segments to optimize screw configuration for diverse food extrusion formulas.

1. Build stable melt backpressure: Improve material filling degree and promote uniform starch gelatinization.
2. Vacuum vent melt seal: Block melt leakage at vent ports and stabilize vacuum degassing performance.
3. Prolong material residence time: Strengthen homogenization of powder, water and functional additives.
4. Moderate shear characteristic: Control frictional heat generation, reduce degradation risk of starch-based raw materials.
5. Modular assembly: Freely matched with other BCT92 screw elements to adjust pressure distribution along the extrusion barrel.

• ✅ Direct OEM Replacement: Strictly produced according to original drawings, plug-and-play without mechanical modification.
• ✅ Strong backpressure generation: Ideal solution to solve vent overflow trouble on food extrusion lines.
• ✅ Food contact compliant option: Mirror polished surface, no material residue dead corners, convenient sanitation cleaning.
• ✅ Balanced shear & conveying property: Less heat rise than reverse kneading blocks, suitable for starch food extrusion.
• ✅ High precision CNC machining: Stable clearance control, consistent performance for continuous mass production.

• Puffed corn snacks, breakfast cereals, pellet snacks
• Textured vegetable protein (TVP), meat analog products
• Fortified artificial rice and nutritional grain extrudates
• Pet food, aquatic feed extrusion and moisture removal
• Modified starch processing
• Low-temperature extrusion of heat-sensitive food formulations

We supply standard BCT92 reverse mixing screw elements and support customized lead and length. Standard sizes have short lead time. When sending inquiry, confirm extruder model, screw layout drawing, raw material characteristics and sanitation requirements. All screw elements pass dimension tolerance inspection, hardness test and surface quality testing before shipment.

Q1: Can this reverse element replace original spare parts directly?
A1: Yes. Outer diameter, spline structure and flight geometry follow OEM standards, no extra adjustment required.
Q2: What is the difference between reverse mixing screw element and reverse kneading block?
A2: Reverse screw element focuses on backpressure building for vent sealing with mild shear. Reverse kneading block provides stronger mixing shear but weaker pressure building effect.
Q3: How to select suitable material grade for food-grade production?
A3: 316L stainless steel for high-moisture, acidic food formulas; WR5 / SAM26 alloy for high-fiber, abrasive feed raw materials.
Q4: Can I customize element length and screw lead?
A4: Customization available. We provide screw layout optimization suggestions based on your production formula.
Q5: Delivery time and warranty?
A5: Monthly capacity:8000–12000 PCS. Standard items:3–7 working days; customized parts:7–15 working days. 12-month warranty under normal operating conditions.

Looking for reliable melt sealing screw elements for your BC92 food extruder? Our BCT92 reverse mixing screw segment builds stable backpressure and eliminates vent overflow during extrusion. Send your screw drawing and raw material information, we offer professional material recommendation and sample service to stabilize your food production quality.