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Help CenterGirth Gear for 4.8×72m Rotary Kiln, 42CrMo4, Module 35, Full Casting With Ultrasonic Test
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Henan San Kuang Machinery Technology Co., Ltd. is proud to offer this high-quality Girth Gear for 4.8×72m Rotary Kiln, manufactured from premium 42CrMo4 alloy steel with a module of 35. As a professional manufacturer established in 2022 with a 10,000-30,000 square meter factory and over 50 skilled employees, we specialize in large-scale heavy machinery components. This girth gear is produced through a full casting process and undergoes rigorous ultrasonic testing to ensure internal soundness, making it a reliable choice for cement, lime, and mineral processing plants worldwide.
Our girth gear is designed to withstand extreme operating conditions in rotary kilns, providing long service life and smooth power transmission. The 42CrMo4 material offers excellent strength, toughness, and wear resistance, while the module 35 design ensures proper meshing with pinions. With full casting technique, we achieve consistent metallurgical properties throughout the gear body, minimizing the risk of defects.
Key Features & Technical Specifications
- Material: 42CrMo4 (quenched and tempered) – high tensile strength and fatigue resistance.
- Module: 35 – suitable for heavy-duty rotary kiln drives.
- Manufacturing: Full casting process with controlled solidification and heat treatment.
- Quality Control: 100% ultrasonic testing (UT) per ASTM A388 or equivalent standards.
- Dimensional Accuracy: Precision machining to meet AGMA or DIN quality grades.
- Customization: Number of teeth, bore diameter, bolt holes, and keyways are customizable.
- Application: Specifically designed for 4.8×72m rotary kilns, but adaptable to other sizes upon request.
Technical Parameters (Typical)
| Parameter | Value |
| Outer Diameter | Custom (approx. 5000-6000 mm based on kiln diameter) |
| Module | 35 |
| Number of Teeth | Customizable (e.g., 140-180) |
| Face Width | 400-600 mm (customizable) |
| Material | 42CrMo4 (DIN 1.7225) |
| Hardness | HB 280-320 (after heat treatment) |
| Ultrasonic Test | 100% inspection, report provided |
Advantages for Your Rotary Kiln Operation
- Enhanced Reliability: Full casting eliminates welding seams, reducing stress concentration and potential failure points.
- Superior Wear Resistance: 42CrMo4 with proper heat treatment ensures long-term durability even under high temperature and heavy load.
- Improved Efficiency: Precise gear geometry reduces vibration and noise, extending the life of pinion and bearings.
- Full Traceability: Each gear is serialized with material certificates and UT reports.
- Cost-Effective: As a direct manufacturer, we offer competitive pricing without compromising quality.
- Global Logistics: Shipped from Shanghai, Lianyungang, Qingdao, or Tianjin ports with professional packing for ocean freight.
At Henan San Kuang Machinery Technology Co., Ltd., we are committed to delivering excellence. Our factory spans 10,000-30,000 square meters and employs over 100 professionals, with an annual export value of US$2.5-5 million. We serve markets across North America, South America, Europe, Asia, Africa, and Oceania. Our quality management system adheres to ISO9001, ISO14000, and OHSAS18001 standards, ensuring consistent product quality.
We have supplied girth gears for numerous rotary kiln projects worldwide, earning trust from cement and mining companies. Our ultrasonic testing capability guarantees that every gear meets stringent internal quality criteria. With a strong technical team, we can also provide customized designs to match your specific kiln dimensions and power requirements.
Contact us today to discuss your girth gear needs. We provide detailed drawings, competitive quotations, and fast delivery. Let Henan San Kuang be your reliable partner for heavy-duty rotary kiln components.
Frequently Asked Questions
- Q: What is the lead time for this girth gear? A: Typical lead time is 90-120 days depending on the complexity of customization. Please contact us for exact schedule.
- Q: Can you provide a gear for a 4.8×72m kiln with a different module? A: Yes, we can customize the module and number of teeth to match your pinion. Module 35 is standard, but other modules are available upon request.
- Q: Do you offer heat treatment services? A: Yes, we offer quenching and tempering, as well as surface hardening options like induction hardening, as per your specifications.
- Q: How is the gear packaged for export? A: The gear is securely packed in a steel frame with wooden crates, rust-proof coating, and waterproof wrapping to ensure safe sea transport.
- Q: What quality certificates do you provide? A: We provide material test certificates, ultrasonic test reports, and dimensional inspection reports. Our factory is ISO9001 certified.
- Q: Can I visit your factory before placing an order? A: Absolutely. We welcome factory inspections. Our facility is located in Luoyang, Henan, China. Please arrange a visit in advance.
- Q: What is the minimum order quantity? A: For custom girth gears, minimum order quantity is usually 1 piece. We can also produce multiple gears for larger projects.
- Q: How do you ensure the gear matches the existing pinion? A: We will request your pinion specifications (module, pressure angle, addendum modification) and design the gear accordingly. A 3D model and drawing will be provided for approval before production.
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