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Help Center5000mm OD Segmented Girth Gear, 4 Segments, Alloy Steel, 20° Pressure Angle
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Henan San Kuang Machinery Technology Co., Ltd. is a specialized manufacturer of large-scale segmented girth gears for heavy industries. With over a decade of experience and a factory spanning 10,000–30,000 square meters, we produce the 5000mm OD Segmented Girth Gear, 4 Segments, Alloy Steel, 20° Pressure Angle — a robust solution designed for demanding rotary applications such as cement kilns, ball mills, and rotary dryers. Our gear is engineered to deliver high torque transmission, long service life, and easy installation, even in confined spaces where full-ring gears are impractical.
This girth gear is manufactured from high-strength alloy steel, precisely machined to achieve a 20° pressure angle that ensures smooth meshing and reduced noise. The 4-segment design allows for convenient transportation, on-site assembly, and maintenance. Each segment is precision cut and heat-treated to meet rigorous quality standards, ensuring reliable performance under heavy loads and harsh environments.
Key Features & Technical Specifications
- Split Design: 4 segments for easy handling and installation — ideal for large-diameter applications where shipping full rings is not feasible.
- Alloy Steel Construction: High-strength alloy steel (e.g., 42CrMo, 40Cr, or custom) offers excellent wear resistance and fatigue strength.
- 20° Pressure Angle: Standard gear geometry for balanced load capacity and smooth operation, compatible with most pinion designs.
- Heat Treatment Options: Induction hardening, quenching & tempering, or nitriding available to achieve desired surface hardness (HRC 45–55 typically).
- High Precision Machining: CNC gear hobbing and grinding ensure tooth profile accuracy within AGMA 8–10 or DIN 7–9 quality grades.
- Customizable Module & Tooth Count: We can adjust the gear module and number of teeth to match your specific drive requirements.
- Comprehensive Quality Control: 100% dimensional inspection, magnetic particle testing (MPI), and ultrasonic testing (UT) available upon request.
- Versatile Applications: Suitable for cement mills, mining ball mills, rotary kilns, kiln drives, sugar mills, and other heavy rotating equipment.
Technical Parameters (Standard)
| Outer Diameter | 5000 mm |
| Number of Segments | 4 |
| Material | Alloy Steel (e.g., 42CrMo, 40Cr, 35CrMo) |
| Pressure Angle | 20° |
| Module | Customizable (e.g., 20, 25, 30 mm) |
| Tooth Hardness | HRC 45–55 (after heat treatment) |
| Gear Quality Grade | AGMA 8–10 / DIN 7–9 |
| Assembly Method | Segmented bolted joints with dowel pins for alignment |
| Weight (approx.) | 8,000–12,000 kg (depending on tooth profile) |
Advantages & Customer Benefits
- Simplified Logistics: The 4-segment design reduces shipping costs and allows delivery to sites with limited crane capacity.
- Easy On-Site Installation: Segments are pre-drilled and matched during trial assembly at our factory, ensuring fast and accurate field alignment.
- Longer Service Life: Alloy steel with proper heat treatment minimizes wear and pitting, reducing downtime and replacement frequency.
- Cost-Effective: Compared to full-ring gears, segmented girth gears offer lower initial cost and easier maintenance when only one segment needs replacement.
- Reliable Performance: Our gears undergo rigorous testing to ensure they withstand high torque and temperature fluctuations typical in cement and mining operations.
Trust & Quality Assurance
Henan San Kuang Machinery Technology Co., Ltd. was established in 2014 and has grown into a trusted supplier for domestic and international markets. Our factory is ISO9001 certified, and we adhere to strict quality management systems. With an annual export value of US$2.5–5 million, we serve clients across North America, South America, Europe, Southeast Asia, Africa, and Oceania. Our team of 51–100 skilled employees, including engineers and QC specialists, ensures that every gear meets your exact specifications. We ship from major ports including Shanghai, Lianyungang, Qingdao, and Tianjin, with flexible delivery options.
We understand that a girth gear is a critical component for your production line. That's why we offer comprehensive after-sales support, including installation guidance, spare parts, and technical consultation. Contact us today to discuss your project requirements — we can provide a customized solution for your application.
Frequently Asked Questions (FAQ)
-
Q: What is the maximum outer diameter you can produce?
A: Our standard segmented girth gear can reach up to 6000 mm OD. For larger diameters, please contact us for custom engineering. -
Q: How are the segments fastened together?
A: Each segment uses high-strength bolts and precision dowel pins to ensure concentricity and load distribution. We provide a detailed assembly drawing. -
Q: Can you supply a matching pinion gear?
A: Yes, we can manufacture pinion shafts and pinion gears to match your girth gear's module, pressure angle, and center distance. -
Q: What heat treatment is applied to the gear teeth?
A: Standard heat treatment is quenching and tempering followed by induction hardening of the tooth flanks. Alternative processes like nitriding are available upon request. -
Q: How long does manufacturing take?
A: Typical lead time is 60–90 days depending on specifications and quantity. Rush orders may be accommodated with a surcharge. -
Q: Do you provide a trial assembly before shipment?
A: Yes, we perform a trial assembly of all segments in our factory to verify fit and alignment. Photos and videos can be provided. -
Q: What is the warranty period?
A: We offer a 12-month warranty from the date of shipment against manufacturing defects. Extended warranty is available at extra cost. -
Q: Can I get a sample before bulk order?
A: We can produce a single segment or a full ring as a sample for evaluation. Sample costs are negotiable and may be deducted from future orders.
For any further questions or to request a quotation, please reach out to our sales team. We are ready to support your project with high-quality segmented girth gears that deliver reliable performance for decades.
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