斗山 XE205DA Swing Gearbox

This swing reduction gear (gearbox) is a core drive component specifically engineered for Doosan 20-ton class excavator platforms. It seamlessly integrates a high-strength planetary reduction mechanism with precision manufacturing, ensuring consistent and stable power delivery for the excavator's swing operations. Smooth and Precise Control: Designed for operations requiring frequent swinging, the unit features optimized gear backlash control. This significantly enhances smoothness during start-stop sequences and minimizes operational oscillation. High-Strength, Fatigue-Resistant Design: Key internal components—including planetary gears, ring gears, and gear shafts—are crafted from premium alloy structural steel. Subjected to precision carburizing and quenching treatments, they excel at withstanding the massive reverse impact forces generated during swing braking. Heavy-Duty Sealing and Protection: Equipped with professional-grade, high-performance wear-resistant oil seals, the unit effectively blocks dust, mud, water, and corrosive substances found on job sites, ensuring the internal mechanism remains well-lubricated over the long term. Efficient Installation and Compatibility: Interface specifications fully align with Doosan OEM standards, allowing for precise mating with hydraulic swing motors and reducing installation and commissioning time. Guangzhou Jianming Machinery Equipment Co., Ltd. With 20 years of solid practical experience, Guangzhou Jianming Machinery Equipment Co., Ltd. is an expert in the field of mechanical power systems and components. We began as a small machinery repair shop. Over the past two decades, we have accumulated a wealth of successful global case studies and maintenance expertise. Drawing on frontline experience in solving complex mechanical issues, we have earned widespread acclaim and grown into a comprehensive enterprise employing over 200 professionals. We deeply understand the challenges equipment faces under extreme conditions and possess extensive practical experience and expertise in the following areas: Heavy Machinery Power Upgrades and Retrofitting: We provide customized engine overhaul and replacement solutions for various types of construction machinery, with deep expertise in major power platforms such as Komatsu. Mining and Industrial Equipment Maintenance: We offer professional power optimization strategies to ensure equipment maintains continuous operational capability under heavy-load conditions. Agricultural and Irrigation Power Systems: We provide power unit upgrades and comprehensive troubleshooting services for a wide range of agricultural machinery and drainage/irrigation equipment. Leveraging our extensive technical expertise, we are also a leading supplier of spare parts: Comprehensive range of mechanical components: We offer a wide, carefully curated selection of construction machinery parts—including piston assemblies, cylinder heads, crankshafts, engine overhaul gasket kits, and hydraulic components—to meet all your one-stop procurement needs. Our wealth of practical experience and robust supply chain network are our most valuable assets. Whether you are facing complex mechanical challenges or require reliable spare parts, Jianming Machinery possesses the expertise to help you succeed! Please contact our sales representative, Mr. Zhan. WeChat/WhatsApp: +86 180 2712 4770