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High-Temperature Resistant Felt Roller Sleeves | Heat-Safe Aluminum Handling
Industrial high-temperature resistant felt roller sleeves for aluminum extrusion and heat transfer printing. Available in PBO (600°C), Kevlar (480°C), and Nomex (280°C). Seamless construction for non-marking transport and superior thermal insulation. Custom sizes for every cooling table.
- Introduction
Introduction
Precision Engineered High-Temperature Felt Roller Sleeves
Specifically designed for the aluminum extrusion industry and heat-intensive processing lines, Yonghangbelt High-Temperature Resistant Felt Roller Sleeves provide the ultimate protection for delicate surfaces. These sleeves are used on cooling tables and transport rollers to prevent "graphite marking" and mechanical scratching on freshly extruded profiles.
Yonghangbelts sleeves are manufactured using a specialized needling process to create a seamless, high-density structure. This ensures uniform heat distribution and high dimensional stability under extreme thermal stress.
Key Advantages:
Seamless Construction: No joints or seams to break or leave marks on your products.
Exceptional Thermal Limits: Available in multiple material grades to handle temperatures from 280°C up to 600°C.
High Density & Wear Resistance: The dense needle-punched structure resists abrasion from sharp aluminum edges, significantly extending the service life.
Chemical & Oil Resistance: Resistant to most industrial lubricants and chemicals used in metal processing.
Material Selection Guide:
PBO (Brown + Yellow): For the initial discharge stage (Ultra-high temperature up to 600°C).
Kevlar (Yellow): For the first-stage cooling table (High temperature up to 480°C).
Nomex (White): For middle and late-stage cooling (Medium temperature up to 280°C).
Polyester (White): For final cooling and packaging (Low temperature up to 180°C).
| Feature | Specification |
| Material Options | PBO, Kevlar (Aramid), Nomex, Polyester |
| Max Temperature (Short Term) | 600°C (PBO), 480°C (Kevlar), 280°C (Nomex) |
| Inner Diameter (ID) | 20mm – 165mm (Customizable) |
| Wall Thickness | 6mm, 8mm, 10mm, 12mm (Standard: 8mm/10mm) |
| Length | 100mm – 2500mm (Standard & Custom lengths) |
| Hardness/Density | High-density felt (Standard: 400g/mm²) |
| Color Coding | Brown/Yellow (PBO), Yellow (Kevlar), White (Nomex/Poly) |
💡 (Pro-Tips for Aluminum Plants)
Thickness Selection: For high-load cooling tables, we recommend a 10mm wall thickness. Thicker felt provides better cushioning and prevents the roller's metal core from transferring heat too quickly.
Matching Material to Zone: Don't use PBO everywhere; it's expensive. Map your cooling table's temperature zones and use PBO → Kevlar → Nomex in sequence to optimize cost-performance.
Maintenance: To prevent "glazing" (where the felt surface becomes hard and shiny), ensure the rollers are rotating freely and clean off any aluminum debris or dust periodically with a soft brush.
Product Applications：
Aluminum Extrusion Industry:
Initial Exit: Freshly extruded aluminum profiles are extremely hot, so PBO rollers must be used.
Run-out Table: Conveys freshly formed profiles.
Cooling Table: Rollers for step-type and transfer-type cooling beds.
Stretcher: Clamping and conveying sections.
Heat Transfer Printing:
Pressure rollers used in the heat transfer printing process for fabrics and aluminum sheets.
Glass Industry:
Used at the exit of glass tempering furnaces and on conveyor lines to prevent scratching the surface of hot glass.
Precision Metal Processing:
Conveying of surface-sensitive materials such as stainless steel sheets and copper.
Top 10 Frequently Asked Questions (FAQ)
Q1: What is the maximum temperature your felt sleeves can withstand?
A: We offer three primary heat grades: PBO (600°C) for the initial discharge area, Kevlar (480°C) for high-heat cooling stages, and Nomex (280°C) for mid-to-late stage transport.
Q2: Are these sleeves seamless? Will they break during operation?
A: Yes, our sleeves feature a truly seamless needle-punched construction. The lack of joints prevents "marking" on the aluminum profiles and provides superior structural integrity, ensuring the belt will not snap or delaminate under normal use.
Q3: How do I choose the correct Inner Diameter (ID)?
A: You should provide the actual outer diameter of your metal roller. We typically recommend an ID that is 1–2mm smaller than the roller (interference fit). This utilizes the felt's natural elasticity to ensure a tight, non-slip grip on the shaft.
Q4: Why is only the surface layer of the PBO sleeve brown/yellow?
A: To optimize the cost-performance ratio, we use a PBO + Kevlar sandwich structure. Only the contact layer uses expensive PBO fiber (600°C), while the base layers use Kevlar (480°C). This provides the necessary heat resistance while reducing costs by over 30%.
Q5: Does the felt produce lint or contaminate the aluminum surface?
A: No. Our felt undergoes a high-density hardening treatment. The fibers are tightly interlocked, making them highly wear-resistant and lint-free, ensuring a clean, contaminant-free finish for your profiles.
Q6: What are your standard wall thicknesses? Can I customize them?
A: Our standard thicknesses are 6mm, 8mm, 10mm, and 12mm. We can customize the thickness to your exact requirements; however, 10mm is the industry standard for optimal cushioning in aluminum extrusion.
Q7: What is the estimated service life of these sleeves?
A: Service life depends on temperature and friction frequency. Under standard operating conditions on a cooling table, a Kevlar sleeve typically provides reliable service for over 6 months.
Q8: Is it still safe to use if the surface turns dark or hard (carbonized)?
A: Slight darkening is normal oxidation. However, if the surface becomes "glazed" (hard, brittle, or shiny), it means the material has exceeded its thermal limit. It should be replaced immediately to avoid scratching the aluminum surface.
Q9: Do you provide samples for testing?
A: Yes. We encourage testing a sample section first to verify the ID fit and thermal performance before committing to a bulk order.
Q10: Will oil in the environment affect the felt?
A: While the felt is naturally resistant to most oils, excessive absorption can reduce heat dissipation and change the friction coefficient. We recommend keeping the environment as clean as possible to prevent oil-soaked fibers from marking your profiles.
