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Home > Industrial Equipment & Components > Power Transmission Parts > Gear > Girth Gear for Rotary Kiln, 20Mn Steel, Surface Hardness HB 320-380, 60 Tooth Count
Girth Gear for Rotary Kiln, 20Mn Steel, Surface Hardness HB 320-380, 60 Tooth Count
Product Spotlights
Girth gear made of 20Mn steel, surface hardened to HB 320-380 for superior wear resistance. 60 teeth designed for rotary kiln applications. Fully customizable dimensions, CNC-machined for precision fit. Factory-direct pricing with ISO 9001 quality. Fast global shipping from major Chinese ports.
US$ 1000
≥1 Set
Key Specifications
Get Latest Price
Material:
Other, 20Mn Steel
Application:
Other, Rotary kiln
Surface Hardness:
HB 320-380
Payment & Shipping
Payment Methods:
Port of Shipment:
qingdao|tianjin
Delivery Detail:
30 days
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Material
Other, 20Mn Steel
Application
Other, Rotary kiln
Surface Hardness
HB 320-380
Number of Teeth
60
Module
Customizable
Heat Treatment
Surface hardening (induction/normalizing)
Manufacturing Process
Casting + machining
Weight Range
1,000 – 20,000 kg (customizable)
Standard
ISO 9001, ISO 14001 (company certified)
Packaging
Steel frame + plastic wrap, seaworthy
Henan San Kuang Machinery Technology Co., Ltd. is a professional manufacturer of heavy-duty girth gears for rotary kilns, backed by a 10,000–30,000 m² factory and over 50 skilled employees. Our Girth Gear for Rotary Kiln is made from high-quality 20Mn steel, with a precisely controlled surface hardness of HB 320–380 and a 60-tooth count designed for reliable power transmission in demanding thermal environments. We combine advanced machining, rigorous quality control, and years of export experience to deliver gears that meet international standards.
This girth gear is engineered for durability, wear resistance, and smooth operation in rotary kilns used in cement, lime, metallurgy, and chemical industries. The 20Mn steel alloy provides excellent toughness and weldability, while the surface hardening process ensures a long service life even under high load and temperature fluctuations.
Key Features & Technical Specifications
- Material: 20Mn low-alloy steel – offers high strength, good impact resistance, and reliable performance in high-temperature rotary kilns.
- Surface Hardness: HB 320–380 – achieved through heat treatment (normalizing + surface hardening), providing excellent wear resistance against the pinion.
- Tooth Count: 60 teeth – designed for optimal gear ratio and torque transmission; can be customized per your kiln specifications.
- Manufacturing Process: Sand casting or steel casting followed by rough machining, heat treatment, finish machining, and tooth profile inspection.
- Quality Control: 100% dimensional inspection, hardness test, magnetic particle test (MPI) or ultrasonic test (UT) available upon request.
- Customization: Module, addendum, tooth profile, bore diameter, keyway, and mounting holes can be tailored to your equipment.
- Packaging: Heavy-duty steel frame, rust-proof coating, and plastic wrapping for safe sea freight.
| Parameter | Value / Range |
|---|---|
| Material | 20Mn Steel (equivalent to 20Mn5 / DIN 1.0458) |
| Surface Hardness | HB 320 – 380 |
| Tooth Count | 60 |
| Module (customizable) | e.g., 20, 22, 25, 28, 30, 32, 36, 40 (subject to design) |
| Outer Diameter | Determined by module and teeth; typical range 2,000–6,000 mm |
| Heat Treatment | Normalizing + surface hardening (induction or flame) |
| Application | Rotary kiln, ball mill, rotary dryer, cooler |
| Delivery | 30–60 days depending on size and quantity |
Advantages & Customer Benefits
- Longer Service Life: The combination of tough 20Mn core and hard surface (HB 320–380) resists abrasive wear and pitting, reducing downtime and replacement costs.
- High Precision: CNC machining and gear hobbing ensure accurate tooth profile, low noise, and smooth meshing with the pinion.
- Temperature Resistance: Designed to withstand the thermal expansion and high operating temperatures of rotary kilns (up to 350°C at the gear area).
- Customizable Dimensions: We can modify the bore, keyway, bolt holes, and overall geometry to fit existing kiln shells without major modifications.
- Cost-Effective: As a factory-direct manufacturer, we offer competitive pricing without sacrificing quality – ideal for large-scale projects.
- Global Shipping: We ship from Shanghai, Qingdao, Lianyungang, or Tianjin ports, with experience exporting to North America, South America, Europe, Africa, Oceania, and Asia.
Trust & Reliability
Henan San Kuang Machinery Technology Co., Ltd. was established in 2022 but is backed by years of industry experience from our team. Our factory covers 10,000–30,000 m² and employs 51–100 skilled workers, with an annual export value of US$2.5–5 million. We are certified under ISO 9001, ISO 14001, OHSAS 18001 and other management systems, ensuring consistent quality and environmental responsibility. Every girth gear undergoes strict inspection, and we offer a 12-month warranty against manufacturing defects. Our products have been delivered to rotary kiln projects in over 20 countries, earning trust from cement plant operators worldwide.
We are confident that our 20Mn steel girth gear with HB 320–380 hardness and 60 teeth will meet or exceed your expectations. Contact us today for a custom quotation or to discuss your specific kiln requirements. Our engineers are ready to support you with drawings, technical data, and after-sales service.
Frequently Asked Questions (FAQ)
-
Q: What is the typical delivery time for a 60-tooth girth gear?
A: Standard delivery is 30–60 days after design confirmation, depending on the size and heat treatment requirements. Rush orders can be discussed. -
Q: Can you provide a girth gear with a different tooth count or module?
A: Yes, we offer full customization. You can provide your existing gear drawing or ask us to design based on pinion parameters and center distance. -
Q: Is the surface hardness HB 320-380 uniform across the entire tooth?
A: The hardness is achieved on the tooth flank and root surface. The core remains softer (tough) for impact resistance. We can provide hardness test reports. -
Q: What certifications do you have for the girth gear?
A: Our company holds ISO 9001, ISO 14001, OHSAS 18001, and other certifications. The product itself can be supplied with material certificates, heat treatment reports, and dimensional inspection reports. -
Q: How do you ensure the gear matches my existing pinion?
A: We recommend sending us your pinion drawing or worn gear sample. We will calculate the correct module, pressure angle, and addendum to ensure proper backlash and contact pattern. -
Q: What is the maximum weight of the girth gear you can produce?
A: Our casting and machining capacity allows gears up to 20,000 kg (single piece). For larger sizes, we can design segmented gears. -
Q: Do you provide installation guidance or on-site service?
A: Yes, we can provide technical drawings and written instructions. For large projects, on-site technical support is available at an additional cost. -
Q: What packing do you use for sea freight?
A: The gear is coated with anti-rust oil, wrapped in plastic, and secured in a heavy steel frame or wooden crate suitable for long-distance ocean transport.
Send Inquiry to This Supplier
1Yr
Business Type
Manufacturer
Year Established
2022
Factory Size
10,000-30,000 square meters
Annual Export Value
US$2.5 Million - US$5 Million
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