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Home > Industrial Equipment & Components > Power Transmission Parts > Slewing Drive > Custom Ring Gear Internal Ring Gear External Ring Gear Alloy Steel 42CrMo4 Carburized Hardened AGMA Q8
Custom Ring Gear Internal Ring Gear External Ring Gear Alloy Steel 42CrMo4 Carburized Hardened AGMA Q8
Product Spotlights
Custom ring gears made from alloy steel 42CrMo4, carburized and hardened to AGMA Q8 precision. Internal or external designs available with diameters up to 3000 mm. In-house heat treatment, rigorous quality control, and flexible production from prototype to high volume. Trusted by global industries since 2014.
Negotiable
MOQ: 1 Piece (Price negotiable depending on order volume and customization)
Key Specifications
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Material:
Alloy Steel 42CrMo4
Heat Treatment:
Carburized and Hardened
Precision Grade:
AGMA Q8
Payment & Shipping
Payment Methods:
Port of Shipment:
China
Delivery Detail:
Delivery time depends on order quantity.
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Material
Alloy Steel 42CrMo4
Heat Treatment
Carburized and Hardened
Precision Grade
AGMA Q8
Gear Type
Custom Ring Gear (Internal/External)
Application
Industrial machinery, heavy equipment, transmission systems
Surface Hardness
58–62 HRC (typical)
Customization
Size, tooth profile, bore diameter available upon request
Custom Ring Gear – precision engineered internal and external ring gears manufactured from premium Alloy Steel 42CrMo4, carburized and hardened to achieve superior surface durability. As a professional manufacturer since 2014, Henan San Kuang Machinery Technology Co., Ltd. delivers gears that meet AGMA Q8 quality standards, ensuring reliable performance in demanding industrial applications. Our factory, spanning 10,000–30,000 square meters, utilizes advanced heat treatment processes to provide exceptional wear resistance and extended service life.
Key Features & Technical Specifications
- Material Excellence: Alloy Steel 42CrMo4 (equivalent to AISI 4140/4145) offers high tensile strength, good toughness, and excellent hardenability.
- Carburized & Hardened: Case hardening depth typically 0.8–1.5 mm, surface hardness 58–62 HRC, core hardness 32–38 HRC for optimal fatigue resistance.
- AGMA Q8 Precision: Tooth profile and spacing tolerances ensure smooth meshing, low noise, and minimal vibration.
- Internal & External Options: Designed as internal ring gears (for planetary systems) or external ring gears (for heavy-duty drives).
- Customizable Dimensions: Outer diameter up to 3000 mm, module range 2–30, tooth count and bore diameter as per customer drawings.
- Heat Treatment Consistency: Controlled atmosphere furnaces guarantee repeatable case depth and minimal distortion.
- Rigorous Quality Control: 100% dimensional inspection, metallurgical analysis, and magnetic particle testing.
Typical Applications
| Industry | Use Case |
| Mining & Quarrying | Ring gears for crushers, mills, and conveyor drives |
| Wind Energy | Pitch and yaw drive ring gears |
| Heavy Construction | Slewing ring gears for excavators and cranes |
| Marine & Offshore | Thruster and winch transmission ring gears |
| Automotive & Industrial Gearboxes | Planetary ring gears for differentials and reducers |
Why Choose Our Custom Ring Gears?
- End-to-End Manufacturing: From raw material inspection to final gear cutting (hobbing, shaping, or broaching) and heat treatment – all in-house.
- Competitive Lead Time: Standard 30–45 days for custom orders; expedited service available upon request.
- Flexible Quantities: Low-volume prototypes to high-volume production (100+ pieces per month).
- Global Logistics: Shipment from Port of Shanghai, Qingdao, Lianyungang, or Tianjin – we serve markets in North America, Europe, Asia, and beyond.
- Compliance & Certifications: Our quality management system aligns with ISO9001, ISO14000, and other international standards (detailed certificates available on request).
Trust & Reliability – With an annual export value of US$2.5–5 million and a dedicated team of 51–100 employees, Henan San Kuang Machinery Technology Co., Ltd. has been delivering custom ring gears to satisfied customers across more than 20 countries since 2014. Our factory’s advanced equipment and skilled engineers ensure each gear meets the strict AGMA Q8 tolerances. We welcome your drawings and specifications – contact our technical sales team for a quotation.
Frequently Asked Questions (FAQ)
-
What is the typical lead time for a custom ring gear?
Standard lead time is 30–45 working days after drawing approval and order confirmation. Rush orders may be arranged with additional charges. -
Can you manufacture ring gears with non-standard tooth profiles?
Yes, we can produce involute, cycloidal, or other custom profiles based on your design. Please provide a 2D/3D drawing or specification. -
What maximum outer diameter can you achieve?
Our current capacity supports ring gears up to 3000 mm outer diameter. For larger sizes, please consult our engineering team for feasibility. -
Do you offer heat treatment services besides carburizing?
Yes, we also provide induction hardening, nitriding, and through-hardening based on application requirements. Carburized hardened is standard for high wear resistance. -
Is there a minimum order quantity (MOQ)?
MOQ for custom ring gears is typically 1 piece for prototypes, and 10 pieces for production runs. Contact us for specific cases. -
How do you ensure gear quality matches AGMA Q8?
We use coordinate measuring machines (CMM), gear analyzers, and hardness testers. Each gear is inspected for pitch, runout, profile, and lead accuracy. -
What packing and shipping options are available?
Gears are individually wrapped in corrosion-proof paper, foam-packed in wooden crates. We ship via ocean freight (FCL/LCL) or air freight as per customer preference. -
Can I get a sample before mass production?
Yes, we can produce sample gears for testing. Sample cost is quoted separately and later deducted from bulk order value.
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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