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Large Gear Hobbing Fabrication Up to 1000mm Diameter 20CrMnTi Induction Hardened HRC58-62
Product Spotlights
Precision large gear hobbing up to 1000mm diameter using 20CrMnTi steel with induction hardening to HRC 58-62. In-house heat treatment, CNC hobbing, strict quality control. Suitable for mining, wind, gearboxes. Customizable module, tooth profile, and surface finish. ISO 9001 certified factory with global export experience.
Negotiable
MOQ: 1 Piece (Price negotiable depending on order volume and customization)
Key Specifications
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Material:
20CrMnTi alloy steel
Diameter Range:
Up to 1000mm
Hardness:
HRC58-62 (induction hardened)
Payment & Shipping
Payment Methods:
Port of Shipment:
China
Delivery Detail:
Delivery time depends on order quantity.
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Material
20CrMnTi alloy steel
Diameter Range
Up to 1000mm
Hardness
HRC58-62 (induction hardened)
Process
Gear hobbing + induction hardening
Surface Treatment
Black oxide / shot blasting (optional)
Application
Heavy machinery, mining, wind energy, industrial gearboxes
Precision Grade
DIN 6-8 (customizable)
Tooth Profile
Spur, helical, double helical (custom)
Module Range
M2 – M20 (customizable)
Heat Treatment
Induction hardening (carburizing optional)
Henan San Kuang Machinery Technology Co., Ltd. – your reliable partner for large gear hobbing fabrication. With over a decade of experience and a factory spanning 10,000–30,000 square meters, we specialize in producing high-precision gears up to 1000mm in diameter using premium 20CrMnTi alloy steel with induction hardening to HRC58-62. Our gears are designed for demanding applications where durability, torque transmission, and wear resistance are critical. Backed by multiple quality management certifications (ISO 9001, ISO 14000, TL900, SA8000, etc.), we ensure every gear meets rigorous performance standards.
This product line offers a complete solution for large-scale gear manufacturing, from hobbing to heat treatment. Whether you need spur, helical, or double helical gears, our advanced CNC hobbing machines handle complex profiles with precision. The induction hardening process provides a hard, wear-resistant surface while retaining a tough core – ideal for heavy-load applications. Below we detail the key features and technical specifications.
Key Features & Advantages
- Material Excellence: 20CrMnTi is a low-carbon alloy steel with excellent hardenability, good toughness, and high fatigue strength – the standard choice for heavy-duty gears.
- Induction Hardening (HRC58-62): Targeted surface hardening achieves a case depth of 1–3 mm (customizable), drastically improving wear resistance and gear life without compromising core ductility.
- Large Diameter Capacity: Hobbing up to 1000mm diameter – suitable for industrial gearboxes, crane drives, mill drives, wind turbine pitch/yaw gears, and mining equipment.
- Precision Hobbing: Using modern hobbing machines with CNC control, we achieve accuracy up to DIN 6 (depending on module and profile). Backlash and runout are tightly controlled.
- Versatile Tooth Profiles: Spur, helical (up to 30° helix angle), double helical (herringbone) – all available, with optional tooth crowning or modification for noise reduction.
- Full In-House Heat Treatment: Our controlled induction furnaces ensure consistent hardness across each tooth flank, with strict temperature and time monitoring.
- Customizable Surface Finish: Options include black oxide for corrosion protection, shot blasting to remove scale, or phosphating for improved lubricant retention.
- Comprehensive Quality Control: We perform 100% tooth profile inspection (using gear testers), hardness testing (Rockwell), and magnetic particle inspection (MPI) to detect surface flaws.
Technical Specifications (Typical Parameters)
| Parameter | Value / Range |
|---|---|
| Max Diameter (hobbed) | 1000 mm |
| Module (m) | 2 – 20 mm |
| Max Face Width | Up to 400 mm (depending on module) |
| Tooth Profile Accuracy | DIN 6 – DIN 8 (custom) |
| Hardness (Surface) | HRC 58 – 62 |
| Case Depth (Effective) | 0.8 – 2.5 mm (induction) ; up to 4 mm (carburizing optional) |
| Core Hardness (Temper) | HRC 30 – 42 (typical for 20CrMnTi after quench & temper) |
| Max Helix Angle | Up to 30° |
| Surface Finish (Ra) | ≤ 1.6 μm (after grinding, optional) |
Applications & Benefits for Customers
- Mining & Cement Industry: Large gears for ball mills, kilns, and crushers – our induction hardened gears withstand heavy shock loads and abrasive environments.
- Wind Energy: Pitch and yaw gears require high precision and fatigue resistance – we meet the strict requirements for 20-year service life.
- Industrial Gearboxes: Helical and spur gears for speed reducers, extruders, and conveyor drives – our precise tooth geometry reduces noise and vibration.
- Construction & Crane Machinery: Swing, travel, and hoist gears operating under cyclic loads benefit from the tough core/hard case combination.
- Marine & Offshore: Gears for winches, thrusters, and deck equipment – we can supply gears with corrosion-resistant coatings if needed.
- Cost Efficiency: Induction hardening is a selective heat treatment that reduces distortion compared to case carburizing, lowering post-processing costs.
- Lead Times: Typical production lead time 4–8 weeks for standard modules, with rush service available upon request.
Trust & Reliability: Since our establishment in 2014, Henan San Kuang has supplied gears to customers across North America, Europe, Southeast Asia, Oceania, Africa, and domestic China. Our annual export value exceeds US$2.5 million, a testament to global satisfaction. We hold certifications including ISO 9001, ISO 14000, TL900, SA8000, OHSAS 18001, and many more – ensuring our manufacturing processes are safe, environmentally responsible, and quality-driven.
We ship via major Chinese ports (Shanghai, Lianyungang, Qingdao, Tianjin) and offer flexible packaging (wooden crates, steel frames) to protect large gears during transit. Our engineering team speaks English and is ready to discuss your gear specifications, tolerances, and testing requirements.
Contact us today for a quotation or technical consultation. Let Henan San Kuang deliver the high-performance large gears your project needs.
Frequently Asked Questions (FAQ)
-
What is the maximum tooth hardness you can achieve with induction hardening?
Our standard target is HRC 58-62 on the tooth flanks. For specific applications, we can adjust the induction parameters to achieve up to HRC 64 on low-carbon steels, but HRC 58-62 provides an excellent balance of wear resistance and toughness for 20CrMnTi. -
Can you produce gears with a module smaller than M2 or larger than M20?
M2 – M20 is our standard hobbing range for large gears. For modules below M2, we recommend using our gear grinding service (available upon request). For modules above M20, please consult our engineering team for feasibility. -
Do you provide gear grinding after hobbing to achieve higher precision?
Yes, we offer finish grinding for applications requiring DIN 5 or better accuracy. However, our standard hobbed gears (without grinding) already achieve DIN 6 for most sizes. Grinding is an optional extra-cost service. -
What is the typical lead time for a custom large gear of 800mm diameter?
Depending on current workload and material availability, typical lead time is 4–6 weeks. For urgent orders, we can expedite to 3 weeks with a rush fee. -
What types of packaging do you use for export shipping?
Large gears are securely fixed in custom wooden crates or steel frames, with rust-preventive oil coating and plastic wrap. For sea freight, we add silica gel and vibration-dampening materials to prevent damage. -
Do you provide samples before mass production?
Yes, we can produce a sample gear (typically at cost) for customer approval. However, for large gears, sample cost may be high; many clients rely on our approved quality reports instead. -
How do you ensure the induction hardening depth is consistent across all teeth?
We use programmable induction heating coils with precise power and feed rate control. Each gear is inspected with a hardness tester and metallographic analysis on a sacrificial tooth (or test coupon) to verify case depth meets specification. -
Can you machine gears from customer-supplied materials?
Absolutely. We can accept customer-supplied 20CrMnTi or other materials, provided they meet our incoming inspection standards (chemical composition, grain size, cleanliness). This can reduce material costs for high-volume orders.
Send Inquiry to This Supplier
1Yr
Year Established
2014
Factory Size
10,000-30,000 square meters
Annual Export Value
US$2.5 Million - US$5 Million
Total Employees
51 - 100 People
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