1.Product Overview:
The grader double universal joint drive shaft is a heavy-duty power transmission component specifically designed for road leveling, land grading, and similar engineering applications. It operates reliably under high-load, dusty, high-vibration, and large-angle deflection conditions. Featuring a double Cardan joint structure combined with dynamic compensation and fatigue-resistant design, it efficiently transmits power to core components such as the grader blade lifting system and rotor drive unit. It precisely adapts to terrain variations and operational angle changes, ensuring stable and continuous power transmission while minimizing equipment vibration and mechanical wear.

2. Product Features:

(1) High Load Capacity: Nominal torque range: 5,000–8,000 N·m; transient impact torque capacity up to 200% of nominal value, suitable for heavy-duty blade cutting and rotor crushing operations.

(2) Wide-Angle Compensation: Dual universal joint linkage supports multi-directional deflection for blade lifting, chassis tilting, and complex terrain adaptability.

(3) Dust & Contamination Resistance: Fully enclosed sealing design prevents sand and dust ingress into bearing chambers, extending service life.

(4) Lightweight & Efficient: Structural optimization and lightweight alloy materials reduce weight by 20–25% compared to traditional designs, enhancing grader maneuverability.

(5) Smart Lubrication Management: Pre-filled with long-lasting, high-temperature-resistant grease (-45°C to +120°C), featuring external grease fittings for rapid maintenance and reduced downtime.

3. Product Advantages:

(1) Precision Power Transmission: Optimized phase angle design achieves ≥97% transmission efficiency, minimizing energy loss and heat generation.

(2) Exceptional Durability: Passes 300,000 fatigue cycles and 100-hour salt spray testing, offering 40% longer lifespan than conventional products.

(3) Rapid Maintenance Design: Modular structure enables individual replacement of bearings and seals, lowering repair costs.

(4) Certification Compliance: Meets ISO 9001, CE standards, and construction machinery industry norms (e.g., GB/T 14781).

4. Technical Parameters:

5. Applications:
Suitable for road graders, mining/construction site preparation machinery, snow treatment equipment, agricultural land leveling vehicles, and other heavy-duty machinery.

6. Customization Options:

Modular Design: Customizable lengths, interfaces, and materials for rapid compatibility with diverse equipment.

For technical details or customization inquiries, contact our engineering team for professional support

Xi'an Xin Sanming Precision Equipment Co., Ltd was established in March 2015. Its predecessor was Xi'an Sanming Auto Parts Co., Ltd which established in 1996. The company's address is adjacent to large automobile production enterprises such as Shaanxi Heavy Duty Truck Co., Ltd. and Shaanxi Hande Axle Co., Ltd. It is surrounded by highways and has convenient transportation. The registered capital of the company is 10 million RMB Yuan, with a factory area of over 10000 square meters and an office area of over 500 square meters. The company currently has nearly 100 employees. The company is mainly committed to the research and development, testing, design, manufacturing, and sales of transmission system components such as automobiles. The company has an intelligent processing line, heat treatment production line, and assembly line with an annual output of 180000 sets of double series universal joints. It currently has more than 150 advanced production and manufacturing equipment such as intelligent manufacturing, and more than 50 high-precision testing equipment. For many years, the company has been supplying double joint universal joint assembly series products to enterprises such as Shaanxi Automobile Heavy Truck, Dongfeng Group, and XCMG Group, and has become a mature and stable cooperative supplier. The double universal joint shaft developed by the company is assembled in off-road vehicles such as Shaanxi Automobile and Dongfeng, and has participated in numerous domestic and international off-road vehicle rally races.

The company has always focused on technological innovation and product research and development, and has honed an excellent and efficient technical team, with more than 10 high-level transmission component engineering and technical research and development talents and complete product testing and verification methods. It can adapt to customers' personalized needs and market development needs, and develop various types of cross axis universal joint shaft products for users. The company has independently developed a series of double universal joint shafts and double centered universal joint shafts with complete intellectual property rights. After comparing the overall performance of similar products from customers with international first-class brands, the conclusion is that the performance is equivalent and can fully meet the needs of equipment with large angles, large torque transmission, and harsh working conditions. The company's products have obtained more than 20 patents and are widely used in various fields such as off-road vehicles, construction machinery, agricultural machinery, shipping, wheeled vehicles, aviation, etc. The company has been awarded the titles of "Shaanxi High tech Enterprise" and "Shaanxi Gazelle Enterprise", For many years, the company has been operating in accordance with the IATF16949-2016 quality system, ensuring controlled product quality.

The company's development goal is to continue to adhere to the business philosophy of "continuous technological innovation and continuous quality improvement", continue to adhere to the service tenet of "customer first", keep up with the development trends of international and domestic automotive, construction machinery, agricultural machinery, shipping, aviation and other fields, constantly experiment and explore the application of new materials and processes in universal joint shaft products, continuously improve technical level, continuously enhance enterprise management level, and strive to build the enterprise into a world-class supplier of transmission machinery components!