⚙️ Technical Compatibility
- Hole Size: Custom to requirements
- Compression Ratio: Tailored to feed formula
Yemmak 520.138 Ring Die for Poultry Feed (3.8mm)
Turkish Engineering Precision: Reverse-engineered to Yemmak's original 520.138 specifications with exact screw thread dimensions for guaranteed fit.
High Capacity Output: Large diameter die face enables high-throughput poultry feed production with consistent pellet quality.
| material | X46Cr13 Stainless Steel |
| hole size | 3.0 - 5.0 mm |
| compression ratio | 1:8 - 1:11 |
| hardness | HRC 52-55 |
| feature | Screw Mounting / Turkish Spec |
Guarantee
Quenched
Shipping
Why Choose Tianyou Spare Parts?
Precision manufacturing for ultimate pelleting performance.
CNC Gun Drilling
Imported 4-axis gun drilling center ensures ultra-smooth inner hole finish (Ra 0.8), reducing blockage and improving pellet quality for consistent feed output.
Vacuum Heat Treatment
Computer-controlled vacuum quenching achieves uniform HRC 52-56 hardness throughout the die body, preventing premature cracking under heavy pelleting loads.
Precision Counter-Sink
Multi-step counter-sinking and chamfering process creates a smooth entry cone for each hole, ensuring consistent feed flow and reduced energy consumption.
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.
Frequently Asked Questions
Is this Yemmak 520.138 die compatible with the 420.138? ▼
No, the 420.138 and 520.138 have different mounting specifications. Please select the correct model for your pellet mill.
What compression ratio do you recommend for broiler feed? ▼
For broiler feed, we typically recommend a compression ratio of 1:9 to 1:11, which provides optimal pellet durability and digestibility.
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.