The main bridge of the T400s tractor

As a key component of the transmission system in agricultural machinery, the tractor’s drive shaft is directly related to the efficiency of the equipment’s operation, its load-carrying capacity, and the safety of its use.Among these, the tractor's high-power drive axle is a key factor in determining the competitiveness of high-class agricultural machinery.For over 30 years, Shandong Lutong has been engaged in the research, development, and production of drive axles for agricultural machinery.Drawing on its extensive experience in using the original drive axles of the T400 tractor, Shandong Lutong embarked on a new round of iterative improvements to the powerful drive axles of the T400s tractor model.It is equipped with innovative technologies that enable a dual-core configuration combined with wet braking and electronic differential locking, allowing for a significant increase in performance. This design fully meets the operational requirements of 400-horsepower tractors and provides powerful support for the global modernization of agricultural machinery.

Classic iteration, quality inheritance – the technical foundation of the T400s.

The T400 tractor’s drive axle, a key product of Shandong Lutong, has successfully collaborated with world-renowned machinery manufacturers such as PTZ in Russia, thanks to its outstanding advantages—including high load capacity, efficient transmission system, and durability. The annual export volume of this product can reach up to 10,000 units, making it a high-quality solution in the agricultural machinery sector. The drive axle for T400 tractors has received widespread acclaim in the global market. It is worth noting that the T400 tractor’s drive axle already features Gleason bevel gear technology with curved teeth. The new, more powerful T400s drive axle fully embodies the essence of this advanced technology, retaining the cast-iron axle housing and the benefits of Gleason bevel gears. At the same time, it perfectly meets the needs of modern high-class agricultural enterprises, further enhancing overall performance and reinforcing the advantages of the transmission system. Currently, this product has been installed by PTZ manufacturers for testing purposes and has initially been recognized for its excellent operational characteristics, making it a highly competitive solution in the agricultural machinery market.

Technical Parameters

As a leading enterprise in the production of tractor axles in China, Shandong Lutong boasts large-scale production capabilities, with an annual output of 50,000 axles of various types. The company is equipped with a complete range of intelligent production lines and high-precision testing equipment, and has also obtained ISO9001 quality management system certification. From raw material selection and production processing to the final delivery of finished products, a standardized management system is applied throughout the entire process, ensuring that the high-performance tractor axles produced by Shandong Lutong maintain superior quality while also achieving significant improvements in efficiency to meet the highest standards required by customers worldwide.

Two-core upgrade: wet brakes + electronic differential lock, which eliminate common issues in operation.

The main breakthrough in the development of the high-power T400s tractor’s drive axles lies in the innovative integration of two key technologies: wet braking and electronic differential locking. These technologies effectively address industry-wide challenges such as the insufficient braking performance of traditional tractor drive axles and poor traction in difficult road conditions. As a result, high-power tractors equipped with these drive axles gain a significant advantage in various agricultural applications, further solidifying Shandong Lutong’s leading position in the field of tractor drive axles and high-power tractor components.

Wet braking: efficient and stable, suitable for extreme operating conditions.

The wet braking system installed on the drive axle of the T400s tractor with wet drive technology features a completely enclosed design, with the braking components operating within a specialized oil-filled environment. Compared to traditional dry braking systems, this design offers three significant advantages.

• Firstly, there is high thermal dissipation efficiency. The heat generated during braking can be quickly transferred and dissipated through the oil. Even during prolonged operation under high loads, stable braking performance can always be maintained, preventing any reduction in braking effectiveness due to overheating. Moreover, the temperature of the brakes is kept within safe limits, ensuring the safety of operations in all directions.

• The enclosed design effectively prevents agricultural land from being eroded by dirt, dust, debris, etc., reducing the wear and tear on braking components, extending their lifespan, and lowering the costs associated with equipment maintenance. It also enables the system to perfectly adapt to various challenging farming conditions.

• Thirdly, the braking force is strong and stable. The multi-component frictional design ensures sufficient braking torque, rapid response, and smooth deceleration. Even under harsh operating conditions, such as heavy loads or driving on long slopes, precise braking can be achieved, thereby ensuring the safety of the driver and the equipment. The ability to brake in all directions further enhances the reliability of the tractor’s performance.

Electronic differential lock: an intelligent system designed to enhance traffic flow efficiency.

Since tractors tend to slip easily and it is difficult for them to get out of slippery conditions on difficult roads, such as those covered in mud or having steep slopes, the T400s tractor is equipped with an intelligent electronic differential lock (EDS) – an additional feature of the ABS system. This system can respond in milliseconds and monitor the difference in wheel speeds on both sides in real time. When it detects that one wheel is starting to slip, it automatically applies brake force to that wheel, evenly distributing the power to the other wheel and ensuring that both wheels rotate in sync, thus effectively solving the problem of one wheel slipping and causing the entire tractor to get stuck. This significantly improves the tractor’s traction and its ability to overcome difficult situations. The electronic differential lock provides fully automatic, intelligent control without the need for manual intervention. It activates automatically when the vehicle speed falls below a certain range and turns off during normal driving. It is not only capable of handling intensive operations such as deep tillage and combined soil preparation but can also easily handle challenging scenarios, whether on cross-country terrains or muddy roads, making the tractor’s operation smoother and more efficient.

Global optimization, numerous adaptations – Comprehensive performance analysis of the T400s

In addition to the key improvements in the braking system, including the dry brake technology and electronic differential lock, the drive axle of the T400s tractor also features comprehensive component optimizations and enhanced overall performance, based on the design of the T400 tractor’s drive axle. These features make it an ideal choice for agricultural machinery in the 400-horsepower class.

Regarding the transmission specifications, the drive axle of the T400s tractor with wet drive technology continues the design concept of the Gleason arc gear transmission used in the drive axle of the T400 tractor. This transmission system was developed by the Gleason Company in the United States. The gear profile features an arc-shaped design and is manufactured using advanced tooth profile generation techniques. Its key advantages include high transmission efficiency, stable meshing, and high throughput. Compared to the T400 tractor’s drive axle, the T400s’ transmission design has been further optimized, resulting in an efficiency of over 98%, significantly reduced noise levels, and lower energy consumption. This not only leads to lower fuel costs during operation but also greatly enhances the overall operational efficiency of the tractor. The wheel side is equipped with an NGW-type planetary braking system, which is known for its compact design, stable performance, and high load capacity.

In terms of quality and reliability, the main bridge of the T400s tractor is made from high-strength cast steel, which possesses high hardness and excellent impact resistance, allowing it to withstand heavy loads under extreme conditions during long-term use on high-powered tractors. The sealing design has been completely modernized, and the dust protection features can be adapted to the operating conditions of various regions in Russia – from the severe cold and windy, sandy climates in the north to the rainy conditions in the south. This ensures the long-term stable performance of the product under challenging operating conditions, while also increasing its operational efficiency. The stability rate exceeds 99.8%.

As a modernized and high-powered tractor drive axle, the T400s tractor drive axle is not only perfectly suitable for various tractor models with a power output of 400 horsepower, but can also be customized and adapted to meet the specific needs of customers. This is taken into account regarding both agricultural operations and certain auxiliary engineering applications, thereby ensuring a wide range of applications for tractor drive axles and further expanding their use in the agricultural machinery sector. Currently, this product has been installed at the PTZ manufacturer’s factory for testing purposes. During the testing phase, its improved performance in terms of wet braking, electronic differential locking systems, and optimized transmission mechanisms met the expected standards, and this was preliminarily confirmed by PTZ’s technical team.

Shandong Lutong: By embracing innovation, we have created a high-quality brand in the field of leading bridges.

The successful development of the powerful T400s tractor front axle is a significant achievement for Shandong Lutong in the field of continuous innovation in tractor front axle technology. By leveraging the advantages of cooperation with domestic research institutions, the company has acquired 36 independently patented technologies. It has always focused on the research, development, and optimization of front axles for agricultural machinery as well as powerful tractor front axles, constantly overcoming technical challenges to produce high-quality products that meet market demands.

From the widespread adoption of the T400 tractor’s main drive axles around the world to the continuous modernization of the T400s series, Shandong Lutong has always adhered to the development philosophy of “quality first, innovation, and continuous improvement.” The company strictly controls product quality and continuously enhances its after-sales service system throughout the entire production process. Its products cover a range of key sectors in China’s agricultural industry and are also exported to Russia, Iran, Ukraine, and other countries and regions, making it a reliable supplier of high-quality agricultural machinery drive axles for overseas customers.

In the future, Shandong Lutong will continue to expand its production of high-quality drive axles for tractors and high-power agricultural machinery, promote technological innovation and product optimization, and provide global agricultural machinery manufacturers with more advanced and efficient drive axle solutions that will contribute to the sustainable development of agricultural mechanization worldwide. As a result, Chinese products equipped with intelligent drive axles will gain a broader international presence.