⚙️ Technical Compatibility
- Hole Size: Custom to requirements
- Compression Ratio: Tailored to feed formula
Buhler 520.138 Ring Die for Poultry Feed (3.8mm)
Swiss Engineering Precision: Reverse-engineered to Buhler's original 520.138 specifications with exact screw thread pitch and flange diameter for guaranteed fit.
4-Axis Gun Drilling: Smooth inner hole walls from gun drilling prevent feed buildup and ensure consistent pellet quality throughout the production run.
| material | X46Cr13 Stainless Steel |
| hole size | 2.0 - 4.5 mm |
| compression ratio | 1:8 - 1:11 |
| hardness | HRC 52-55 |
| feature | Screw Mounting / Buhler Original Spec |
Guarantee
Quenched
Shipping
Premium Material & Extended Lifespan
Forged from high-grade X46Cr13 (Stainless 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.
Why Choose Tianyou Spare Parts?
Precision manufacturing for ultimate pelleting performance.
4-Axis Gun Drilling
Guarantees ultra-smooth inner holes with precise chamfering, reducing blockage and improving pellet quality instantly.
Vacuum Heat Treatment
Computer-controlled quenching process ensures uniform toughness and hardness, preventing die cracking under heavy loads.
Perfect OEM Fit
Reverse-engineered to exact factory specifications. Seamlessly replaces original CPM, Buhler, and Muyang parts.
Precision. Hardness. Lifespan.
The Ring Die is the core of any pellet mill. A poor quality die means blocked holes, high energy consumption, and frequent downtime. Tianyou Machinery delivers OEM-quality replacement parts that match the exact specifications of major European and Chinese brands, but at a 30-50% lower cost.
🐟 X46Cr13 Stainless Steel
For Animal / Aqua Feed
- • Hardness: HRC 52-56 (Vacuum Heat Treated).
- • Feature: High corrosion resistance against feed additives.
- • Finish: Mirror-polished holes for max output.
🪵 20CrMnTi Alloy Steel
For Wood / Biomass
- • Hardness: HRC 58-62 (Carburized).
- • Feature: Extreme wear resistance for abrasive fibers.
- • Strength: Reinforced geometry to prevent cracking.
Hole Finish
Ra 0.8
Precision Gun Drilling
Hardness
HRC 52-62
Vacuum Heat Treatment
Accuracy
100% Check
Final Quality Inspection
✓ Supported OEM Brands
* Disclaimer: Tianyou 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.