Roller Press Cardan Shaft

The cardan shaft of the roller press machine needs to transmit huge torque and adapt to the angular deviation caused by changes in the position of the rollers. It is the core component that connects the transmission device and the rollers. Wanxiang shaft (also known as universal joint shaft) is a key connecting component in the transmission system of rolling mills, widely used in the longitudinal rolling, transverse rolling, and oblique rolling processes of various rolling machines. Its core function is to achieve power transmission when there is an angle between the two axis lines, while compensating for axial, radial, and angular offsets.

The cross axis universal shaft is a commonly used structural form, consisting of the following main components:

1. Universal joint fork: a core component that connects input and output shafts, usually used in pairs;
   

2. Cross shaft: a cross shaped component with four shaft necks that enables power transmission when the angle changes;
   

3. Needle roller bearing: installed on the cross shaft neck to reduce frictional resistance;
   

4. Sealing device: prevents lubricant leakage and contamination from entering;
   

5. Spline sleeve: a scalable structure that compensates for axial displacement.

When the universal joint works, the driving shaft drives the driven shaft to rotate through the cross shaft, while allowing a 15 ° -20 ° angle between the two shafts. In the application of roller presses, the inclination angle α of the universal joint is a key parameter, which is constrained by multiple factors such as roll adjustment, joint length, and gear seat parameters, directly affecting the coefficient of motion non-uniformity. When there is an angular deviation, the angular velocity of the output shaft will exhibit periodic fluctuations, and this non-uniformity needs to be controlled within an allowable range through reasonable design.

For large roller presses, it is recommended to use heavy-duty cross axis universal couplings, with typical models such as SWC and SWP series, which have the advantages of high load-bearing capacity, long service life, and smooth operation.

As a key transmission component, the cardan shaft of the roller press directly affects the operational efficiency and reliability of the entire production line. By rational selection, standardized installation, scientific maintenance, and timely technological transformation, the service life of universal joints can be significantly extended, the failure rate can be reduced, and production efficiency can be improved.