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Help CenterRing Gear Large Ring Gear 20CrNi2Mo Forging Heat Treatment With Full Material Certification
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As a professional manufacturer with over 51–100 skilled employees and a factory spanning 10,000–30,000 square meters, Henan San Kuang Machinery Technology Co., Ltd. proudly presents our premium Ring Gear Large Ring Gear forged from 20CrNi2Mo alloy steel. These gear rings undergo rigorous heat treatment and are supplied with full material certification, ensuring exceptional reliability for heavy-duty power transmission applications. Our advanced forging capabilities and strict quality control make these ring gears a trusted choice for global industries ranging from mining to wind energy.
Product Features & Technical Specifications
Material Advantage: 20CrNi2Mo offers excellent hardenability, toughness, and wear resistance – ideal for large ring gears subjected to high cyclic loads.
Forging Process: Open die forging ensures refined grain structure and elimination of internal defects, resulting in superior mechanical properties.
Heat Treatment: Customizable quenching and tempering cycles achieve optimal hardness and strength balance, with hardness values typically ranging from HB 240 to 320.
Full Material Certification: Every batch is accompanied by chemical composition analysis and mechanical property test reports, guaranteeing traceability and compliance with international standards.
Large Size Capability: We can manufacture ring gears with outer diameters up to 6000 mm, tailored to customer drawings and tolerances.
Surface Finish: Options include as-forged, rough machined, or finish machined to meet specific installation requirements.
| Parameter | Value / Range |
| Material Grade | 20CrNi2Mo (equivalent to AISI 4320 or 8620H) |
| Heat Treatment | Quenching + Tempering (alternative: normalizing + tempering) |
| Hardness (HB) | 240–320 (adjustable per order) |
| Outer Diameter (OD) | ≤ 6000 mm |
| Accuracy Grade | DIN 6–8 (customizable) |
| Inspection | 100% ultrasonic testing, magnetic particle inspection optional |
Key Advantages for Your Application
Enhanced Fatigue Life: The combination of 20CrNi2Mo and optimized heat treatment significantly increases gear tooth bending and contact fatigue resistance.
Customization Flexibility: We accept OEM orders with customer-provided drawings; we can also assist in design optimization for weight reduction without compromising strength.
Logistics Convenience: Ships from major ports like Shanghai, Qingdao, Lianyungang, and Tianjin, with reliable export packing to prevent damage during transit.
Global Market Experience: Our products are exported to North America, South America, Europe, Southeast Asia, Africa, and Oceania – trusted by clients in demanding sectors such as mining and cement.
Trust & Reliability – The Henan San Kuang Difference
Since our establishment in 2022, Henan San Kuang Machinery Technology Co., Ltd. has rapidly grown to achieve an annual export value of US$2.5–5 million. Our factory covers 10,000–30,000 m², housing advanced forging presses, heat treatment furnaces, and CNC machining centers. We have successfully delivered large ring gears to over 20 countries, and our quality assurance team performs full material certification on every order. Contact us today to discuss your custom ring gear requirements – we offer competitive lead times and factory-direct pricing.
Frequently Asked Questions (FAQ)
Q: What is the minimum order quantity for large ring gears?
A: MOQ can be as low as 1 piece for custom orders, subject to drawing complexity. We welcome both trial and bulk orders.Q: Can you provide heat treatment parameters and hardness reports?
A: Yes, full heat treatment process records and hardness test certificates are included with every delivery.Q: How do you ensure the material quality of 20CrNi2Mo?
A: We source raw materials from accredited steel mills and perform chemical composition analysis on each heat. A material certificate is provided.Q: What dimensional tolerances can you achieve for large ring gears?
A: Typical tolerances follow DIN 6–8 grade for gear teeth and concentricity. Tighter tolerances are possible after discussion.Q: Do you offer machining services after forging and heat treatment?
A: Yes, we have CNC lathes and gear hobbing machines for finish machining up to 6 meters diameter.Q: Can you supply ring gears for wind turbine applications?
A: Absolutely. Our 20CrNi2Mo forged ring gears are suitable for yaw and pitch drives in wind turbines, with proper heat treatment to meet durability standards.Q: What packaging do you use for sea freight?
A: We use steel crates, anti-rust coating, and waterproof wrapping to protect the gears during ocean transportation.Q: How long is the typical lead time for a custom large ring gear?
A: Lead time depends on size and complexity, typically 45–60 days after drawing approval. Rush orders can be accommodated.
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