Specialty parts comprise the supporting mechanical parts that complement the primary processing components of a co-rotating twin-screw extruder. Although they do not directly perform conveying, melting or mixing functions, they are essential for maintaining mechanical integrity, wear protection, feeding stability and long-term operational reliability throughout the extrusion process.
This product category includes barrel components such as replaceable liners, wear sleeves, shaft accessories including screw tips and spline sleeves, as well as modular and one-piece feed screws. Each component fulfills a specific mechanical or process-supporting function, contributing to accurate assembly, controlled material flow, wear management and efficient equipment maintenance.
As these components are continuously exposed to abrasive materials, high mechanical loads and repeated maintenance cycles, dimensional accuracy, material selection and manufacturing consistency are critical to their service performance. All Lesun speciality parts are manufactured under the same quality standards as our screw elements, shafts and barrels, ensuring precise interchangeability with major OEM twin-screw extruders and dependable performance under demanding compounding conditions.
Our speciality parts are developed to the same engineering standards as our core extrusion components, providing reliable compatibility, long service life and consistent performance across a wide range of compounding applications.
Complete Supporting Component Portfolio
We offer a comprehensive range of speciality parts covering barrel assemblies, shaft assemblies and feeding systems. The product portfolio enables customers to source compatible replacement parts for complete extrusion systems from a single manufacturing partner.
OEM-Compatible Dimensional Accuracy
All components are manufactured according to strict dimensional tolerances and are designed for compatibility with major international twin-screw extruder platforms. Accurate machining and inspection ensure reliable assembly, proper mechanical engagement and stable long-term operation.
Engineered Wear Protection Solutions
Wear-critical barrel components are available in multiple structural configurations, including integral liners, sintered liners and laser-cladded liners. Material systems are selected according to wear mechanisms, processing conditions and expected service life, providing appropriate solutions for abrasive, corrosive and high-throughput applications.
Precision Manufacturing for Reliable Maintenance
Speciality parts are manufactured using precision machining and controlled inspection procedures to ensure repeatable dimensional accuracy, consistent fitting performance and reduced maintenance complexity during replacement or overhaul.
Flexible Manufacturing and Custom Engineering
In addition to standard replacement components, Lesun manufactures customized speciality parts according to customer drawings, samples or specific equipment requirements. Flexible production capabilities support both prototype development and volume manufacturing while maintaining consistent product quality and delivery performance.
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