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Help CenterSingle Helical Girth Gear 25 Module Case Hardened Steel for Reduction Gearbox
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At Henan San Kuang Machinery Technology Co., Ltd., we specialize in manufacturing high-quality transmission components for heavy industrial applications. Our Single Helical Girth Gear 25 Module Case Hardened Steel for Reduction Gearbox is engineered to deliver exceptional performance in demanding environments. Combining precision machining with proven material science, this girth gear offers reliable torque transmission and extended service life, making it an ideal choice for large reduction gearboxes in mining, cement, and power generation industries.
Each gear is produced under strict quality control, leveraging our 10,000-30,000 square meter facility and experienced team of 51-100 employees. We understand the critical role of drivetrain components, and our product is designed to minimize downtime and maximize operational efficiency. With annual export values reaching US$2.5-5 million, our gears are trusted by clients across North America, South America, Europe, Africa, and Asia.
This gear features a single helical tooth profile with a module of 25, made from case hardened steel for superior surface durability. The case hardening process creates a wear-resistant surface while maintaining a tough core, offering excellent resistance to impact and fatigue. Ideal for use in reduction gearboxes, it ensures smooth meshing and reduced noise levels compared to straight tooth designs.
Key Features & Benefits
- High Load Capacity: The 25 module design provides robust tooth geometry to handle heavy radial and axial loads typical in gearbox applications.
- Case Hardened Surface: Achieves high surface hardness (typically 58-62 HRC, customizable) for excellent wear resistance and long service life.
- Tough Core: The core retains ductility to absorb shock loads and prevent tooth breakage.
- Smooth Operation: Single helical teeth ensure gradual engagement, reducing vibration and noise for quieter drivetrain performance.
- Customizable Dimensions: Bore diameter, overall width, number of teeth, and keyway design can be tailored to your specific gearbox requirement.
- Precision Machining: Manufactured on CNC gear cutting and grinding machines, achieving DIN/AGMA quality grades (please inquire for specific grade).
- Versatile Application: Suitable for cement mills, rotary kilns, ball mills, conveyors, and other heavy machinery reduction gearboxes.
Technical Specifications (Standard Configuration)
| Parameter | Value / Range |
| Module | 25 |
| Gear Type | Single Helical |
| Material | Case Hardened Steel (e.g., 20CrMnTi, 42CrMo4, or as per customer specification) |
| Heat Treatment | Carburizing + Quenching + Tempering |
| Surface Hardness | 58-62 HRC (typical, adjustable) |
| Core Hardness | 30-40 HRC |
| Tooth Profile | Involute (customizable pressure angle) |
| Outside Diameter | Customizable per design (maximum size limited by processing capability) |
| Accuracy Grade | DIN 8 / AGMA 10 or better (available upon request) |
| Packaging | Rust-preventive coating, wooden crate, or as required |
Our single helical girth gears are designed to offer long-term reliability in harsh operating conditions. The case hardened surface resists pitting and spalling, while the helical angle reduces axial thrust forces. Compared to double helical designs, our single helical gear is more cost-effective and simpler to manufacture, yet still provides excellent load distribution.
We offer complete customization: you can specify the number of teeth, helix angle, bore size, keyway dimensions, and any special surface treatment requirements. Our engineering team can work with your design drawings to ensure perfect integration into your reduction gearbox system. Typical applications include main drive gears for cement tube mills, kiln drives, and large conveyor gearboxes.
Why Choose San Kuang as Your Girth Gear Supplier?
Since our establishment in 2022, Henan San Kuang Machinery Technology Co., Ltd. has rapidly grown into a reliable manufacturer of heavy-duty gears and drives. Our factory spanning 10,000-30,000 square meters is equipped with advanced gear hobbing, shaving, grinding, and heat treatment equipment. With an annual export value between US$2.5 million and US$5 million, we serve clients in over 15 markets worldwide, including Europe, the Americas, and Southeast Asia.
We ship our products through major ports in China: Shanghai, Lianyungang, Qingdao, and Tianjin, ensuring efficient logistics for international orders. Our team of 51-100 skilled workers and engineers is dedicated to delivering high-quality gears that meet your exact specifications. We provide rigorous inspection reports including material certificates, hardness test results, and dimensional measurement records.
We are committed to providing excellent after-sales support. Whether you need technical assistance for installation or maintenance advice, our team is ready to assist. Contact us today for a competitive quotation on your next reduction gearbox girth gear requirement. Choose San Kuang – where quality meets reliability.
Frequently Asked Questions (FAQ)
Q1: What is the typical lead time for a custom single helical girth gear?
A: Lead time depends on the complexity and size of the gear. For standard designs with module 25, lead time is typically 30-45 days after drawing approval. Rush orders can be discussed.
Q2: Can you provide gears with different module sizes?
A: Yes, we manufacture girth gears with modules ranging from 10 to 50 and beyond. Module 25 is our standard offering for reduction gearbox applications.
Q3: What is the maximum outside diameter you can produce?
A: Our facility can handle gears with outside diameters up to 8 meters (depending on profile and equipment availability). Please provide your design parameters for confirmation.
Q4: How do you ensure the case hardening depth is uniform?
A: We use controlled carburizing furnaces with precise temperature and carbon potential monitoring. Each gear undergoes hardness testing and case depth verification per your specification.
Q5: Do you offer assembly with the reduction gearbox housing?
A: We supply the girth gear as a separate component. However, we can coordinate with gearbox manufacturers if needed. We provide detailed installation drawings and guidelines.
Q6: What is the expected service life of this gear under normal operating conditions?
A: With proper lubrication and maintenance, a case hardened girth gear can last 15-20 years or more in typical industrial environments. Actual life depends on load, speed, and alignment conditions.
Q7: Can you provide a material certificate or third-party inspection?
A: Yes, we offer material certificates from the steel supplier, along with in-house inspection reports. Third-party inspection (e.g., SGS, BV) is available upon request at additional cost.
Q8: What is the minimum order quantity (MOQ) for this product?
A: For custom gears, MOQ is typically 1 piece. For standard sizes, we can accommodate small quantities. Please contact us for details.
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