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Help CenterExternal Ring Gear 17-4PH Stainless Steel AGMA Q8 Precision for Heavy Duty Machine
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As a leading manufacturer at Henan San Kuang Machinery Technology Co., Ltd., we specialize in precision-engineered External Ring Gear 17-4PH Stainless Steel AGMA Q8 components. With our 10,000-30,000 sqm factory and a dedicated team of 51-100 skilled professionals, we deliver gears that withstand the toughest heavy-duty applications.
Product Overview & Key Benefits
Material Excellence: Crafted from 17-4PH stainless steel, offering superior corrosion resistance, high strength, and excellent wear properties ideal for harsh environments.
AGMA Q8 Precision: Guarantees tight tolerances for smooth, quiet operation and extended gear life even under high loads.
Heavy-Duty Designed: Engineered specifically for heavy machinery – construction equipment, mining drills, wind turbines, and industrial presses.
Customizable Dimensions: Available in a wide range of outer diameters (200–2000 mm) and tooth profiles to fit your exact specifications.
Consistent Quality: Each gear undergoes 100% inspection for dimensional accuracy, hardness, and surface finish.
Technical Specifications
| Parameter | Value / Details |
|---|---|
| Material | 17-4PH Stainless Steel (UNS S17400) |
| Accuracy Grade | AGMA Q8 (equivalent to DIN 6-7) |
| Heat Treatment | Solution Annealed + H900/H1025 Aging (optional) |
| Hardness Range | HRC 33–45 (adjustable per requirement) |
| Surface Finish | Ra 0.8–1.6 μm (as standard) |
| Tooth Profile | Involute; profile and helix angle customizable |
| Maximum OD | Up to 2000 mm (larger sizes available upon request) |
| Application | Heavy duty machinery, gearboxes, rotary tables |
Our production process integrates advanced CNC gear hobbing and shaping equipment, followed by controlled heat treatment and precision grinding. This ensures consistent tooth geometry and axial runout within AGMA Q8 limits. Each gear is accompanied by a dimensional inspection report and material certificate upon request.
Why Choose Our External Ring Gear?
Corrosion & High Temperature Resistance: 17-4PH maintains mechanical properties up to 600°F (315°C), ideal for oil & gas or marine environments.
Long Service Life: The combination of hardness and toughness reduces wear and pitting, lowering maintenance costs.
Flexible Quantities: We support both prototype and mass production – minimum order quantity is negotiable.
On-Time Delivery: With our factory strategically located in Luoyang, Henan, we ship via major ports (Shanghai, Qingdao, Tianjin, Lianyungang) to all global markets.
Engineering Support: Our technical team can assist with gear design optimization and material selection based on your load conditions.
Trusted by Industries Worldwide
Since our establishment in 2022, Henan San Kuang Machinery Technology has rapidly grown to serve clients across North America, Europe, Southeast Asia, the Middle East, and beyond. Our annual export value of US$2.5–5 million reflects consistent global demand for our precision components. Every gear we produce is backed by rigorous in-house testing and traceability protocols.
Whether you need a standard external ring gear or a custom-designed solution for your heavy-duty machine, we invite you to contact us for a quote or technical discussion. Our team is ready to provide competitive pricing, fast lead times, and reliable after-sales support.
Frequently Asked Questions (FAQ)
Q: What is the typical lead time for a custom external ring gear?
A: Lead time depends on size and complexity. For standard sizes (OD up to 500mm), it is around 4–6 weeks. Larger or custom designs may require 8–12 weeks. We offer expedited service for urgent orders upon request.Q: Can you provide material certificates for 17-4PH stainless steel?
A: Yes, we supply a material test report (MTR) certifying chemical composition and mechanical properties with each production batch. Additional third-party inspection is also available.Q: What surface treatments do you offer for corrosion protection?
A: Standard options include shot blasting, black oxide, and passivation. We can also apply electroless nickel plating or PTFE coating if required. Please specify your service environment.Q: How do you ensure AGMA Q8 accuracy is maintained during production?
A: We use CNC gear inspection machines (e.g., Klingelnberg) to measure pitch deviation, runout, and tooth profile. Statistical process control (SPC) is implemented throughout manufacturing.Q: Is the gear suitable for high-speed applications?
A: 17-4PH stainless steel gears can operate at moderate speeds. For very high RPM, we recommend dynamic balancing and possibly a higher grade like AGMA Q10. We can advise based on your RPM and load data.Q: Do you offer heat treatment options other than the standard H900?
A: Yes. We can customize aging conditions such as H1025, H1100, or H1150 to achieve different hardness/toughness balances. This can be tailored to your specific application stress requirements.Q: What is the minimum order quantity (MOQ) for a custom ring gear?
A: Our MOQ is typically 1 piece for prototypes (may have tooling setup fee) and 10 pieces for serial production. For large-volume orders, we provide quantity discounts.Q: Can you supply ring gears with internal splines or mounting holes?
A: Absolutely. We can integrate internal splines, keyways, threaded holes, or custom mounting features as per your drawing. Our in-house machining center handles complex geometries.
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