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Help CenterCustom Designed Girth Gear With 1 Year Warranty and Mill Test Report Certified
Product Spotlights
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Welcome to Henan San Kuang Machinery Technology Co., Ltd. – your reliable partner for heavy-duty industrial transmission components. As a professional manufacturer with a 10,000–30,000 m² factory and an annual export value of US$2.5–5 Million, we are proud to present our Custom Designed Girth Gear – a critical component for rotary kilns, ball mills, and other large rotating equipment. Every gear is built to your exact specifications and comes with a 1-year warranty and a certified Mill Test Report, ensuring full traceability of material properties and manufacturing quality. With a team of 51–100 experienced engineers and workers, we deliver precision, durability, and performance you can count on.
Key Features & Benefits
- Custom Design: We accept drawings in CAD, DXF, or DWG formats. Our engineers can also design based on your application requirements (torque, speed, load, etc.).
- Superior Material Quality: Made from high-grade alloy steel (e.g., 40Cr, 42CrMo, 35CrMo) or carbon steel, with strict chemical composition control. Each batch is accompanied by a Mill Test Report.
- Advanced Manufacturing: Precision machining using CNC gear hobbing, milling, and grinding equipment. Tooth profile accuracy up to DIN 6/ISO 1328 Grade 6.
- Heat Treatment Options: Through-hardening (HB 220–280) or induction hardening (HRC 45–55) to enhance wear resistance and fatigue life.
- Comprehensive Quality Control: 100% ultrasonic testing (UT), magnetic particle testing (MT), and dimensional inspection. Documentation including MTR, hardness test reports, and alignment certificates provided.
- Long Service Life: Optimized tooth geometry reduces pitting, wear, and noise. Expected lifespan exceeds standard designs under proper lubrication.
- Easy Installation: Split designs (segmented) available for large gears to facilitate transportation and on-site assembly. Alignment holes and dowel pins included.
Technical Specifications (Typical Parameters – Customizable)
| Parameter | Standard Range | Available Options |
| Outer Diameter | 1,000 – 10,000 mm | Larger sizes upon request |
| Module | 10 – 50 | Metric/Imperial modules |
| Number of Teeth | 100 – 300 | Custom tooth count |
| Face Width | 150 – 800 mm | Segmented designs available |
| Tooth Hardness | HB 200 – 280 (through-hardened) | HRC 45–55 (surface hardened) |
| Gear Accuracy | DIN 7 – DIN 6 | DIN 5 achievable with grinding |
| Material Grade | 42CrMo (AISI 4140) / 35CrMo | Per customer specification |
| Surface Treatment | Rust-proof oil coating | Paint, galvanized, or phosphating |
Applications
Our custom girth gears are widely used in:
- Cement Industry: Rotary kilns, coal mills, raw mills
- Mining & Mineral Processing: Ball mills, SAG mills, rod mills
- Power Generation: Coal pulverizers, wind turbine yaw drives
- Steel Industry: Sintering machines, coolers
- Chemical & Fertilizer: Rotary dryers, granulators
- Heavy Machinery: Dredgers, tunnel boring machines
Why Choose Henan San Kuang Machinery?
- Experienced Team: Over 50 skilled workers and engineers dedicated to gear manufacturing since 2022, with cumulative expertise in heavy machinery.
- Global Reach: We export to North America, South America, Europe, Africa, Southeast Asia, Oceania, and the Middle East. Our main ports include Shanghai, Lianyungang, Qingdao, and Tianjin.
- Reliable Warranty & Support: Every girth gear carries a 1-year warranty against material defects and workmanship. We provide technical support for installation and maintenance.
- Certified Quality: Each order includes a Mill Test Report (MTR) certified by our quality department, ensuring traceability of chemical composition and mechanical properties.
- Flexible Customization: We work closely with your engineering team to meet tight tolerances and unique requirements, including bolt patterns, lubrication holes, and mounting flanges.
Partner with a manufacturer that prioritizes quality and on-time delivery. Our factory in Luoyang, Henan, covers an area of 10,000–30,000 m², equipped with large-scale CNC gear hobbing machines, vertical lathes, and heat treatment furnaces. With an annual export value of US$2.5–5 million, we have established long-term relationships with clients across six continents. Contact us today for a quote or technical discussion – we are ready to engineer the perfect girth gear for your project.
Frequently Asked Questions (FAQ)
1. What is the minimum order quantity (MOQ) for custom girth gears?
Our MOQ is typically 1 set for custom designs, but we can discuss based on your project needs. For standard sizes, we may accommodate smaller quantities.
2. How long does manufacturing take?
Lead time depends on size and complexity. On average, it ranges from 45 to 90 days from drawing approval. Large segmented gears may require additional time.
3. Do you provide engineering support for gear design?
Yes, our engineers can review your application parameters (torque, speed, load) and suggest optimal tooth profile, material, and heat treatment. We can also design a gear if you only provide mating pinion data.
4. Is the Mill Test Report included in the price?
Yes, a standard Mill Test Report (MTR) is included free of charge for each heat of material used. Additional testing (e.g., UT, MT) may be quoted separately if requested.
5. Can you ship to my country and what documents do you provide?
We ship worldwide via sea freight from Shanghai, Lianyungang, Qingdao, or Tianjin ports. We provide commercial invoice, packing list, bill of lading, MTR, and certificate of origin (if required).
6. What is your warranty coverage exactly?
Our 1-year warranty covers defects in material or workmanship under normal operating conditions. It does not cover wear from improper installation, misalignment, or lack of lubrication.
7. Do you offer spare parts for girth gear assemblies?
Yes, we can supply matching pinions, segments, bolts, and lubrication accessories. Please provide your original gear specifications for compatibility.
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