Spline Sleeve

The Spline Sleeve is a tubular transition component for twin-screw extruder drive systems. It has two sets of internal involute splines at both ends, separately matching the external splines of gearbox output shaft and extruder mandrel. It connects two mismatched spline structures and transmits heavy torque steadily.

• Double-end internal involute splines with independent module and tooth count for gearbox and mandrel.
• High-strength alloy steel with quenching and nitriding treatment for wear and torsion resistance.
• Thickened tube wall for uniform load distribution under heavy-duty compounding.
• Axial locking plate to eliminate axial sliding during operation.

• Interface conversion for compatibility:It solves mismatches of spline module and tooth count between gearbox and mandrel, no need to reconstruct the gearbox or replace the whole mandrel
• Stable heavy torque transmission:Multi-tooth meshing distributes load evenly without stress concentration, ensuring synchronous screw rotation under high torque.
• Compensate minor alignment errors:Clearance between spline teeth offsets tiny radial and angular assembly deviation to prevent unilateral shaft abrasion and fracture.
• Cost-saving equipment retrofitting:Only replace the adapter when switching different mandrel sizes, cutting the cost of expensive gearbox overhaul.
• Easy disassembly & core component protection:Serves as a wearable transition part; replace it separately to avoid permanent damage to gearbox and main mandrel splines.

• Strong universality: One gearbox can be matched with multiple mandrels of different spline specifications
• High load capacity and fatigue resistance, suitable for long-term glass fiber & high-filler production
• Simple assembly and disassembly, greatly reducing downtime for production switching and maintenance.
• Easy expansion and upgrade: Venting or side-feeding processes can be added later simply by installing matching open barrel segments.
• Isolate abrasion to protect costly core drive parts (gearbox, main shaft).

• Targeted Material & Process Optimization: Optimize base material formulation and heat treatment processes to improve wear resistance, corrosion resistance and impact resistance
• Custom Production per Drawings & Samples: Precisely manufacture replacement elements perfectly compatible with your equipment
• 100% Full Inspection Before Delivery: Complete dimensional quality inspection with full inspection reports
• 24-Hour Responsive After-Sales Service: Exclusive after-sales channels with 24-hour response time
• Professional Selection & Process Consultation: Technical advice on screw element configuration, material selection and screw arrangement solutions
• Reverse Engineering & Non-Standard Customization: High-precision reverse engineering for obsolete equipment models
• Rapid Prototyping & Small-Batch Trial Production: Support for new solutions to shorten R&D cycles
• Service Life Assessment & Optimization Guidance: Regular product status tracking and wear detection
• Flexible Stock & Delivery Guarantee: Safety stock service for regular spare parts and urgent orders

• Properties: High precision, high quality, long service life, wear-resistant, corrosion-resistant and durable.
• Compatibility: Compatible with most well-known extruders