⚙️ Technical Compatibility
- Hole Size: Custom to requirements
- Compression Ratio: Tailored to feed formula
Roller Shell Assembly for CPM 7930/7932
High Traction Surface: Precision corrugated or dimpled surface grips raw material effectively, reducing slip and increasing throughput.
Premium Bearing Steel: Forged from 100Cr6 steel for ultimate fatigue resistance under continuous heavy loads.
| Surface | Corrugated / Dimpled |
| Material | 100Cr6 Bearing Steel |
| Hardness | HRC 58-62 |
| Feature | Wear Resistant |
Why Choose Hongyue Spare Parts?
Precision manufacturing for ultimate pelleting performance.
Precision Assembly
Each roller assembly is balanced and pre-loaded with premium bearings and seals, ensuring smooth rotation and zero wobble under maximum pelleting pressure.
High-Traction Surface
Corrugated or dimpled roller shell surface grips raw material effectively, reducing slip and increasing throughput for both feed and biomass applications.
Sealed Bearing System
Double-lip sealed bearings protect against dust and steam ingress, extending bearing life and reducing maintenance downtime in harsh pelleting environments.
Premium Material & Extended Lifespan
Forged from high-grade 100Cr6 (Bearing Steel), our replacement ring dies and roller shells offer superior resistance against corrosion and abrasive wear during high-temperature pelleting. Processed through advanced vacuum heat treatment, we ensure a uniform hardness (typically HRC 52-56), which maximizes output capacity while minimizing the cost per ton of feed produced.
Frequently Asked Questions
Should I choose corrugated or dimpled roller shells for wood pellets? ▼
Corrugated shells are generally preferred for wood pellets as they provide better traction to pull tough biomass fibers into the die holes.
Is this a complete roller assembly or just the shell? ▼
We offer both. You can purchase the bare roller shell or the complete roller assembly equipped with high-quality bearings and seals ready for installation.
Why Material Matters
The lifespan of a ring die is determined by its material composition and heat treatment. We use only certified X46Cr13 stainless steel and 20CrMnTi alloy steel, processed through vacuum heat treatment to ensure uniform hardness and maximum wear resistance.
🐟 Feed Ring Die Material
X46Cr13 Stainless Steel
- • Hardness: HRC 52-56
- • Feature: Excellent corrosion resistance for aqua feed
- • Surface Finish: Mirror-polished holes (Ra ≤ 0.8)
🪵 Biomass Ring Die Material
20CrMnTi Alloy Steel
- • Hardness: HRC 55-62
- • Feature: High impact strength for wood fibers
- • Tensile Strength: ≥ 1080 MPa
Hole Finish
Ra 0.8
Precision Gun Drilling
Hardness
HRC 52-62
Vacuum Heat Treatment
Accuracy
100% Check
Final Quality Inspection
✓ OEM Brand Compatibility
* Disclaimer: Hongyue Machinery is an independent manufacturer of premium aftermarket replacement parts. Any reference to original equipment manufacturer (OEM) brand names, trademarks, or machine models (such as CPM, Buhler, Muyang, Zhengchang, etc.) is strictly for the purpose of identifying compatibility. We are not affiliated with, sponsored by, or endorsed by these manufacturers.