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Help CenterLarge Ring Gear External Gear for Mining Crusher 4140 Steel CNC Hobbing Process
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Henan San Kuang Machinery Technology Co., Ltd. is a professional manufacturer specializing in large-scale ring gears for mining crushers. Our Large Ring Gear External Gear for Mining Crusher is crafted from high-quality 4140 alloy steel and undergoes a precise CNC hobbing process, ensuring exceptional strength, wear resistance, and dimensional accuracy. With a factory area of 10,000–30,000 square meters and annual export value exceeding US$2.5 million, we are dedicated to providing reliable power transmission solutions for the mining industry worldwide.
This gear ring is designed to withstand the extreme loads and harsh conditions typical in mining crushers. The combination of 4140 steel’s toughness and CNC hobbing’s precision guarantees smooth operation, reduced downtime, and extended equipment life. Whether for new installations or replacement parts, our gears are fully customizable to meet your specific application requirements.
Below you will find detailed technical specifications, key product features, and answers to frequently asked questions. We invite you to explore the advantages of choosing San Kuang as your gear manufacturing partner.
Product Highlights & Technical Specifications
Material: Premium 4140 chromoly steel – excellent hardenability and fatigue resistance.
Manufacturing Process: CNC hobbing – ensures consistent tooth profile and high gear accuracy (DIN 6–8 grade).
Heat Treatment: Quenching & tempering optional – hardness can be customized (e.g., HB 280–320, HRC 40–50 upon request).
Surface Finishing: Shot blasting, phosphate coating, or as per customer specification.
Size Range: Outer diameter up to 6000 mm, module 5–50, tooth count customizable.
Application: Bulldozers, cone crushers, jaw crushers, ball mills, and similar heavy mining equipment.
Quality Control: 100% dimensional inspection, magnetic particle testing (MT) and ultrasonic testing (UT) available.
| Parameter | Specification / Range |
|---|---|
| Material | 4140 Alloy Steel (EN19, AISI 4140) |
| Gear Type | External Spur / Helical Ring Gear |
| Module (m) | 5 – 50 mm |
| Outer Diameter | Up to 6000 mm |
| Tooth Accuracy | DIN 6–8 (customizable) |
| Hardness | As-delivered or quenched & tempered (optional) |
| Surface Treatment | Shot blasting, anti-rust oil, phosphate, painting |
Key Advantages of Choosing San Kuang Large Ring Gears
Superior Material Performance: 4140 steel provides excellent strength-to-weight ratio and impact resistance, ideal for heavy shock loads.
Precision Manufacturing: CNC hobbing ensures consistent tooth spacing and profile, reducing vibration and noise during operation.
Customizable Dimensions: We work closely with clients to produce gears that match exact drawings, including special tooth profiles or mounting holes.
Rigorous Quality Assurance: Each gear undergoes dimensional, hardness, and non-destructive testing as required.
Competitive Pricing: As a direct manufacturer with large-scale production capacity, we offer factory-direct prices without compromising quality.
Fast Lead Times: Standard production cycle of 30–45 days; rush orders available upon request.
Why Trust Henan San Kuang Machinery?
Established in 2022, our company has quickly grown into a reliable gear manufacturer with 51–100 employees and a modern factory spanning over 10,000 square meters. We serve customers across North America, South America, Europe, Southeast Asia, Africa, and the Middle East, with annual export value reaching US$2.5–5 million. Our products are backed by multiple certifications including ISO9001, ISO14000, OHSAS18001, and TL9000, reflecting our commitment to quality and environmental responsibility. We ship from major ports such as Shanghai, Qingdao, Tianjin, and Lianyungang.
Whether you need a single large ring gear or a batch for mining equipment maintenance, San Kuang offers the technical expertise and production flexibility to meet your requirements. Contact us today for a quote or technical consultation.
Frequently Asked Questions (FAQ)
Q: What is the typical lead time for a custom large ring gear?
A: Standard lead time is 30–45 days from drawing approval. For urgent orders, we can expedite production to 20–25 days depending on complexity and material availability.Q: Can you supply gears with alternative materials like 42CrMo or 4340?
A: Yes, we can produce ring gears in 42CrMo, 4340, 18CrNiMo7-6, or other alloy steels as per your specification. 4140 is our standard option for cost-effective performance.Q: Do you offer after-sales technical support?
A: Absolutely. Our engineering team provides free technical support for installation, maintenance, and gear troubleshooting. We also offer wear parts recommendations.Q: What is the minimum order quantity (MOQ)?
A: Generally MOQ is 1 piece for custom-made gears. For standard sizes, we may accept smaller quantities. Contact us to discuss your needs.Q: How do you ensure gear quality before shipment?
A: Every gear is inspected for dimensional accuracy (using coordinate measuring machines), tooth profile (gear tester), and hardness (Rockwell/Brinell). NDT methods like magnetic particle or ultrasonic testing are performed if required.Q: Can you handle large diameters beyond 6000 mm?
A: Our current hobbing capacity covers up to 6000 mm outer diameter. For larger sizes, we can discuss segmental gear solutions or other manufacturing approaches.Q: What payment terms do you accept?
A: We accept T/T, L/C at sight, and other negotiable terms for long-term cooperation. Typically 30% deposit and 70% balance before shipment.
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