⚙️ Technical Compatibility
- Hole Size: Custom to requirements
- Compression Ratio: Tailored to feed formula
Buhler 660.138 Ring Die for Cattle Feed (6mm)
Swiss Engineering Precision: Reverse-engineered to Buhler's original 660.138 specifications with exact screw thread pitch and flange diameter for guaranteed fit.
Heavy Duty Construction: Designed to withstand extreme radial forces generated when compressing high-fiber ruminant feed formulations.
| Feature | Screw Mounting / Heavy Duty |
| Hardness | HRC 52-55 |
| Material | X46Cr13 Stainless Steel |
| Hole Size | 4.0 - 8.0 mm |
| Compression Ratio | 1:6 - 1:9 |
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.
3D Interactive View
Hover your mouse to rotate. Inspect the part from every angle.
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 Buhler 660.138 die compatible with other 660 models? ▼
Yes, our replacement die fits Buhler 660.138, 660.178, and 660.228 models as they share identical mounting specifications.
What compression ratio is recommended for cattle feed? ▼
Cattle feed typically requires a lower compression ratio (1:6 to 1:8) due to higher fiber content. We customize the die based on your specific formulation.
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.
🐟 X46Cr13 Stainless Steel
Feed Ring Die Material
- • Hardness: HRC 52-56
- • Feature: Excellent corrosion resistance for aqua feed
- • Surface Finish: Mirror-polished holes (Ra ≤ 0.8)
🪵 20CrMnTi Alloy Steel
Biomass Ring Die Material
- • 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: 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.