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Help CenterRotary Kiln Girth Gear, Module 30, 40Cr Alloy, Quenched and Tempered, ISO 9001 Compatible
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Welcome to Henan San Kuang Machinery Technology Co., Ltd., a professional manufacturer specializing in large-scale heavy-duty transmission components. Our Rotary Kiln Girth Gear, Module 30, 40Cr Alloy, Quenched and Tempered represents a perfect blend of robust material selection and precise heat treatment, designed to deliver exceptional performance in the most demanding rotary kiln applications. With over 10,000 square meters of dedicated factory space and a strong export track record reaching global markets, we ensure every gear meets rigorous quality standards.
This girth gear is manufactured from high-quality 40Cr alloy steel, then subjected to a quenching and tempering (Q&T) process to achieve an optimal balance of hardness, toughness, and wear resistance. The module 30 configuration ensures compatibility with standard rotary kiln drive systems, providing smooth torque transmission and long service life. Our manufacturing process is compatible with ISO 9001 quality management principles, ensuring consistency and reliability in every batch.
Key Product Features & Benefits
- Superior Material: 40Cr alloy steel offers high strength, good hardenability, and excellent fatigue resistance, ideal for heavy-load rotary kiln operations.
- Precise Heat Treatment: Quenched and tempered to achieve a uniform hardness of approximately HB 280-320, ensuring durability and resistance to pitting.
- High Precision Module 30: Accurate tooth profile according to involute standards minimizes noise and vibration, prolonging gear and pinion life.
- Customizable Design: Available in various diameters, tooth counts, and keyway configurations to match your specific kiln drive requirements.
- Rigorous Quality Control: Each gear undergoes dimensional inspection, surface hardness testing, and magnetic particle inspection to ensure defect-free performance.
- Long Service Life: The combination of alloy steel and proper heat treatment results in extended operational intervals, reducing maintenance costs and downtime.
Technical Specifications (Typical Parameters)
| Parameter | Specification |
| Material | 40Cr Alloy Steel |
| Module | 30 |
| Heat Treatment | Quenching & Tempering (Q&T) |
| Hardness (HB) | 280 – 320 (customizable) |
| Tooth Profile | Involute, 20° pressure angle |
| Accuracy Grade | ISO 8 – 9 (customizable to higher grades) |
| Maximum Diameter | Up to 8,000 mm (upon request) |
| Surface Roughness | Ra ≤ 3.2 μm |
| Applicable Standard | ISO 9001 compatible manufacturing |
Our girth gears are widely used in cement rotary kilns, lime kilns, sponge iron rotary kilns, and other metallurgical or chemical rotary reactors. The 40Cr alloy with Q&T treatment ensures stable performance under high temperature fluctuations and heavy dynamic loads, significantly reducing the risk of tooth breakage or premature wear.
Why Choose Our Rotary Kiln Girth Gear?
- Reliable Supplier: Henan San Kuang has a modern plant (10,000–30,000 m²) with advanced gear cutting and heat treatment equipment, ensuring consistent quality.
- Global Reach: Our products are exported to North America, South America, Europe, Africa, Southeast Asia, and Oceania – a testament to our credibility.
- Flexible MOQ: We accept small trial orders as well as mass production, with typical lead time depending on gear size and complexity.
- Technical Support: Our engineering team provides drawing review, customization advice, and after-sales technical assistance.
With an annual export value of US$2.5–5 million and a dedicated workforce of 51–100 skilled employees, Henan San Kuang Machinery Technology Co., Ltd. is committed to delivering high-quality rotary kiln drive components. Our ISO 9001 compatible manufacturing system, combined with a broad portfolio of industrial certifications (including OHSAS18001, ISO14000, and others), ensures that every gear meets international safety and quality benchmarks. We invite you to contact us for a quote or technical consultation – let us help optimize your rotary kiln performance.
Frequently Asked Questions (FAQ)
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Q: Can the girth gear be manufactured with non-standard modules?
A: Yes, we offer customization for various modules, tooth numbers, and diameters. Please provide your detailed drawing or specifications. -
Q: What is the typical delivery time for a module 30 girth gear?
A: Delivery time depends on size and quantity. For standard sizes, it is usually 45–60 days after confirmation. Rush orders may be negotiable. -
Q: Do you provide heat treatment certification?
A: Yes, we can provide a material test certificate and heat treatment report upon request, ensuring traceability and compliance with your requirements. -
Q: Is the gear suitable for high-temperature environments?
A: The 40Cr alloy with quenched and tempered treatment can withstand elevated temperatures, but for extreme heat (>400°C), we recommend discussing alternative materials or cooling designs. -
Q: Can you supply the gear as a complete set with pinion and shaft?
A: Absolutely. We can provide matched pinions and shafts, machined to precise tolerances for optimum meshing. Please specify your drive system requirements. -
Q: What quality inspections do you perform?
A: Each gear undergoes dimensional inspection, hardness testing, magnetic particle inspection for surface defects, and gear tooth profile measurement. Ultrasonic testing is available upon request. -
Q: Do you offer installation guidance?
A: We provide detailed technical documentation and can offer online guidance. For complex installations, an on-site visit can be arranged at additional cost. -
Q: What is the minimum order quantity (MOQ)?
A: MOQ is typically 1 piece for custom gears. For larger repetitive orders, we can discuss volume discounts.
Contact us today to discuss your rotary kiln girth gear requirements. We are your reliable partner in heavy industry transmission solutions.
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