High-Performance Zirconia
Ceramic Bedknives
For PET & PA Pelletizing Systems
Premium zirconia ceramic bedknives designed for PET and PA strand pelletizing systems, delivering zero metallic contamination, cleaner cuts and extended service life compared with traditional carbide solutions.
Engineered for Melt Purity,
Designed for Performance.
In high-purity polymer processing industries, cutting stability and melt purity are critical factors. Our Zirconia (ZrO₂) ceramic bedknives are designed for demanding PET and PA6/PA66 pelletizing applications where contamination control and consistent cutting performance are essential.
Unlike traditional carbide knives, zirconia offers a chemically inert and ultra-wear-resistant cutting surface, helping minimize metallic contamination and maintain stable pelletizing performance.
PET
Polyester Fibers& Films
Zero contamination
High melt purity
Stable cutting
PA6 / PA66
Polyamide EngineeringPlastics
Wear resistance
Clean cutting
Longer service life
Synthetic Fiber
High-tenacityFibers
Consistent quality
Reduced contamination
Better spinnability
Film / Sheet
BOPET / BOPAFilms
Smooth surface
Reduced fines
Higher yield
HIT Zirconia Ceramic Bedknife
The HIT Series: Master of Semi-Dull & Full-Dull Chips
The Challenge
TiO₂ particles create continuous micro-abrasion during pelletizing, requiring a blade material with excellent wear resistance and structural stability.
Our HIT Solution
The HIT Series zirconia ceramic bedknives are engineered with a stabilized microstructure to withstand continuous micro-abrasion from matte additives.
This advanced structure maintains cutting edge stability throughout demanding production cycles.
It helps reduce replacement frequency and improve pellet consistency.
Strategic Customization: Extending Rotor Service Life
Restore the optimal cutting gap with precision-engineered ceramic bedknives tailored to your pelletizing system.
The Challenge
Rotary knives are periodically reground during operation, which gradually reduces their cutting diameter and changes the gap between the rotor and bedknife.
An incorrect cutting gap may result in tailing, unstable cutting performance, and reduced pellet quality.
Our Engineering Solution
We provide non-standard ceramic bedknives with customized thickness and dimensions to compensate for rotor regrinding.
By precisely adjusting the bedknife geometry, we help restore the optimal cutting gap and maintain stable pelletizing performance.
The Value
-
Extended Rotor Utilization
Reduce unnecessary replacement of expensive rotary knives. -
Stable Pellet Quality
Maintain consistent cutting conditions throughout production. -
Custom Engineering Support
Solutions tailored to BKG®, MAAG® and other pelletizing systems.
Precision Manufacturing & Quality Control
Precision Quality Control
Every zirconia ceramic bedknife is inspected through controlled manufacturing processes to ensure dimensional accuracy, surface quality and reliable cutting performance.
Why Zirconia for Pure Polymer Pelletizing
A comparison between conventional carbide bedknives and HIT Series zirconia ceramic solutions.
| Feature |
Conventional Carbide Bedknives |
HIT Series Zirconia Ceramic |
Application Benefit |
|---|---|---|---|
| Material | Carbide / Alloy Materials | High-Purity Zirconia (ZrO₂) | Stable material quality and consistent performance |
| Material Suitability | Reinforced Polymer Applications | Pure PET / PA / PBT Applications | Optimized for contamination-sensitive production |
| Matte Chip Performance | Moderate Wear Resistance | HIT Specialized for TiO₂ Matte Chips | Designed for semi-dull and full-dull chip processing |
| Sizing Capability | Standard Dimensions | Bespoke Non-Standard Dimensions | Supports rotor compensation after regrinding |
| Contamination Risk | Potential Metallic Transfer | Zero Metallic Contamination Risk | Helps prevent black spots and impurities |
Designed for High-Purity Polymer Applications
Zirconia ceramic bedknives are engineered for polymer processing where cutting stability, cleanliness, and contamination control are critical.
PET & PA Pure Resins
For textile, film and bottle-grade production
- Textile-grade PET chips
- Bottle-grade PET production
- PA6 / PA66 polymer applications
Semi-Dull & Full-Dull Chips
HIT Series for TiO₂ Matte Chips
- Semi-dull PET chips
- Full-dull PET chips
- High TiO₂ content polymers
High-Purity Polymers
Where contamination control is critical
- Optical-grade polymers
- Medical-grade materials
- High-purity fiber applications
Typical Models & Dimensions
Standard and customized dimensions are available according to your pelletizing system requirements.
| Parameter | Capability |
|---|---|
| Material | High-Purity Zirconia (ZrO₂) |
| Thickness | Customized according to rotor condition and cutting gap requirements |
| Dimension | OEM-compatible replacement for BKG®, MAAG®, Automatik and other systems |
| Tolerance | Precision engineered according to system requirements |
| Customization | Non-standard dimensions available for rotor compensation after regrinding |
Customer Case
Premium Semi-Dull / Full-Dull Nylon
Ceramic Bedknife Solution
Application
PA6 Semi-Dull and Full-Dull Nylon Chips
Pelletizing System
Automatik Strand Pelletizing System
The Challenge
High titanium dioxide (TiO₂) content caused standard ceramic bedknives to fail within 15 days, requiring frequent blade replacement and causing production interruptions.
Our Solution
HIT Zirconia Ceramic bedknives were implemented to withstand high-friction matte additives. The optimized zirconia structure provides improved hardness and toughness for demanding continuous production.
Confirmed service life improvement compared with original ceramic blades.
Need a Ceramic Bedknife Solution for Your Pelletizing System?
Share your material, pelletizing system and current blade requirements. Our engineers will recommend a suitable zirconia solution.
SZSUNLIT — Precision-engineered pelletizing knife solutions for cleaner cuts, longer service life and stable production
