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Help CenterBall Mill Girth Gear for Mineral Processing Plant, 14m Diameter, 20CrNiMo, 8500 Nm, Oil-Immersion Lubrication, Stable Rotation
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As a leading manufacturer from Henan San Kuang Machinery Technology Co., Ltd., we are proud to present our Ball Mill Girth Gear specifically designed for mineral processing plants. With a massive 14m diameter, premium 20CrNiMo alloy steel, and a robust torque capacity of 8500 Nm, this girth gear delivers exceptional durability and smooth operation under the toughest conditions. Our factory, spanning 10,000-30,000 square meters with over 50 skilled employees, ensures every gear is precision-engineered to meet international standards, backed by certifications including ISO9001, ISO14000, and OHSAS18001.
This girth gear is the core transmission component for large ball mills used in ore grinding, cement production, and other heavy industries. The oil-immersion lubrication system guarantees continuous film lubrication, reducing wear and extending service life even under high load and high-speed rotation. Our experience in export markets across North America, South America, Europe, Africa, and Asia guarantees that our products comply with global quality requirements.
Key Features & Technical Specifications
- Material Excellence: Crafted from 20CrNiMo alloy steel, offering a perfect balance of hardness, toughness, and fatigue resistance. The carburizing and quenching heat treatment provides a hardened surface layer while maintaining a ductile core.
- Large Diameter Precision: 14m outer diameter with high-precision gear hobbing ensures minimal backlash and smooth meshing, reducing vibration and noise.
- High Torque Capacity: Rated at 8500 Nm, capable of handling the massive driving forces required for large-scale ball mills without deformation or failure.
- Oil-Immersion Lubrication: The gear runs in a sealed oil bath, ensuring constant lubrication, removing heat, and protecting against contaminants. This significantly extends gear life and reduces maintenance frequency.
- Stable Rotation: Precision balancing and rigid construction guarantee stable rotation even under variable loads, which is critical for consistent grinding performance.
- Customizable Design: Available with optional surface treatments, tooth profile modifications, and mounting configurations to suit specific mill requirements.
| Parameter | Specification |
|---|---|
| Material Grade | 20CrNiMo |
| Outer Diameter | 14,000 mm |
| Torque Rating | 8,500 Nm |
| Lubrication Type | Oil-Immersion |
| Heat Treatment | Carburizing + Quenching |
| Surface Hardness | HRC 58-62 |
| Core Hardness | HRC 30-38 |
| Accuracy Grade | ISO 8-9 (customizable) |
Advantages for Your Mineral Processing Operations
- Reduced Downtime: The oil-immersion lubrication system minimizes wear and tear, allowing continuous operation for months without unplanned maintenance.
- Higher Grinding Efficiency: Stable rotation transmits power uniformly, improving mill throughput and reducing energy consumption.
- Long Service Life: The combination of 20CrNiMo material and proper heat treatment ensures a gear that can last 10-15 years under normal operating conditions.
- Ease of Installation: Our girth gears are designed with precision alignment features and come with detailed installation manuals, supported by our technical team.
- Global Compliance: Manufactured in accordance with ISO9001, ISO14000, and OHSAS18001 standards, ensuring quality, environmental, and safety regulations are met.
Henan San Kuang Machinery Technology Co., Ltd. has been a trusted supplier since 2022, with an annual export value ranging from US$2.5 million to US$5 million. Our products are shipped from major ports (Shanghai, Lianyungang, Qingdao, Tianjin) to markets worldwide, including North America, South America, Europe, Africa, and Oceania. With over 50 employees and a modern factory of 10,000-30,000 square meters, we have the capacity to produce large-scale girth gears efficiently and deliver them on schedule. We have earned certifications such as HACCP, TL900, QS9000, SA8000, ISO9001, ISO9004, ISO17799, ISO9000, ISO14000, ISO10441, ISO16949, TS16969, ISO19011:2000, OHSAS18001, and others, reflecting our commitment to quality and continuous improvement.
Choose our 14m Ball Mill Girth Gear for your mineral processing plant and experience the difference in performance and reliability. Contact us today for a quotation or technical consultation. We offer customization options to match your specific mill requirements, and our team is ready to support you from design to installation.
Frequently Asked Questions (FAQ)
-
Q: What is the typical delivery time for a 14m girth gear?
A: Delivery time depends on the order quantity and customization. Standard lead time is 90-120 days after order confirmation. For urgent projects, we can discuss expedited options. -
Q: Can this girth gear be used with other lubricants besides oil-immersion?
A: The gear is designed for oil-immersion lubrication, but it can also be adapted for forced oil circulation or grease lubrication with modifications. Please consult our engineers for specific requirements. -
Q: What is the maximum operating temperature for this gear?
A: The recommended operating temperature range is -20°C to +80°C. For higher temperatures, special heat-resistant materials or cooling systems can be applied. -
Q: Do you offer on-site installation support?
A: Yes, we provide optional on-site technical guidance and installation supervision. Our team can also train your maintenance staff. -
Q: How does the 20CrNiMo material compare to 42CrMo or 35CrMo?
A: 20CrNiMo offers better surface hardness after carburizing and higher impact toughness, making it ideal for large gears under heavy shock loads. 42CrMo is more common for medium-duty gears, but 20CrNiMo provides superior wear resistance. -
Q: Can you provide a gear with a smaller diameter for a pilot plant?
A: Yes, we manufacture custom sizes. Our production range covers diameters from 2m to 16m. Please specify your requirements for a tailored solution. -
Q: What quality control measures are in place for these gears?
A: Each gear undergoes ultrasonic testing, magnetic particle inspection, hardness testing, and tooth profile measurement. We also provide a full inspection report upon request. -
Q: Is the gear supplied with a warranty?
A: We offer a standard 12-month warranty on material and workmanship. Extended warranty options are available.
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