Mining Ring Gear | 4340 Alloy Steel | 3000+ Nm

Precision Inner Ring Gear Forgings for Heavy-Duty Power Transmission Systems

Our inner ring gear forgings represent the pinnacle of durability and performance in gear manufacturing, specifically engineered for planetary gear systems and heavy industrial applications. Manufactured through advanced closed-die forging processes from premium alloy steels (AISI 8620, 9310) or case-hardening steels, these components achieve superior grain structure that significantly enhances fatigue life and load capacity compared to machined alternatives. The forging process creates continuous grain flow that perfectly follows the gear tooth profile, resulting in impact strength up to 30% higher than conventional methods.

Available in diameters from 300mm to 3000mm with module sizes 2-12, our inner ring gears undergo precision CNC gear cutting to achieve AGMA Class 10-12 accuracy levels. Each component receives specialized heat treatment including carburizing or induction hardening to achieve surface hardness of HRC 58-62 while maintaining tough cores (HRC 30-35). We offer complete customization of internal splines, keyways, and mounting features to ensure direct compatibility with your assembly requirements. All forgings include full material certification with optional additional testing including ultrasonic inspection, magnetic particle testing, and metallurgical analysis.

The superior mechanical properties of our forged inner ring gears make them ideal for wind turbine gearboxes, heavy mining equipment transmissions, and large industrial gear reducers where reliability is critical. Key advantages include: 50% longer service life compared to cast gears, reduced noise and vibration through precision tooth finishing, and the ability to withstand extreme shock loads. Our engineering team can assist with tooth profile optimization, material selection for specific operating environments (including corrosion-resistant options), and complete gearbox integration support.

Contact our gear specialists today for technical consultation on your specific application requirements. We provide complete manufacturing solutions from prototype development to high-volume production, backed by ISO 9001:2015 certified quality systems and full material traceability. Request your customized quotation with complete technical specifications including load capacity charts and material test reports.