1. Industrial Robots: Spline shafts are widely used in the columns and mechanical arms of industrial robots for supporting structures and performing complex actions such as grasping, assembling, and welding operations. Ball splines, due to their low friction resistance and high energy efficiency, reduce energy loss when the robot is in motion.

2. Automated Material Handling Equipment: In the fields of industrial production and logistics, automated material handling equipment is used for the automated transportation of materials.

Spline shafts, with their high load bearing capacity and good transmission performance, can adapt to the transportation needs of materials of different weights and shapes.

3. Tire Forming Machines: In the tire manufacturing industry, tire forming machines are one of the core pieces of equipment, and spline shafts are used in the tire forming process to accurately transmit power for precise control of various components.

4. Automotive Industry: Spline shafts are used in the power transmission system of automobiles to connect the engine and transmission, and they are also used in the steering systems, suspension systems, and other parts of the vehicle.

5. Machine Tool Manufacturing: In the main shaft transmission system of CNC machine tools, spline shafts ensure efficient and stable power transmission between the main shaft and the motor, improving the machining accuracy and efficiency of the machine tool.

6. Agricultural Machinery: In agricultural production, agricultural machinery such as tractors, harvesters, and seeders also require the use of spline shafts as an important part of the transmission device.

7. Construction Machinery: In construction and infrastructure construction, construction machinery such as excavators, cranes, and bulldozers also require the use of spline shafts as transmission device connection components.

8. Aerospace Field: In the aerospace field, spline shafts are used to connect the power transmission parts between aircraft engines and propulsion systems, and they are also used in the flight control systems, landing gear systems, cockpit systems, and other parts of the aircraft.

9. Home Appliances: In home appliances such as washing machines and refrigerators, ball spline shafts are used to transmit the rotational force generated by the motor to drive the operation of the compressor.

10. Industrial Production Lines: In automated equipment, ball spline shafts are an important component of robot joints, which can withstand repeated rotary motion while maintaining precise position control.

These application scenarios demonstrate the diversity and importance of spline shafts in modern industry and technology.