The electric motor rotating shaft is horizontal, the drive pinion spin axis is also horizontal. The trouble is that these axes are not aligned, they happen to be parallel to each other. The Cardan Shaft redirects the travel shaft to the drive pinion without changing the way of rotation.
Trusted in industry, cardan shafts have confirmed practical about applications where space is limited-as well while in conditions where an factor in the machine train (e.g. paper roll) might need to be actuated (dynamically positioned) to an alternate position when the equipment are not running. The universal joint permits limited activity without uncoupling. To ensure ample lubrication circulation, which in turn inhibits the universal joints from seizing, cardan shafts are usually installed with an angle from 4 to 6 6 degrees at the universal joints. Knowledge, though, has shown that the angle between the shafts of the driver and driven unit ought to be kept to the very least, preferably significantly less than 4.36 mrads (0.25 degrees). Preferably, the angles between the driver and powered shafts and the cardan shaft, proven 
as β1 and β2 in Fig. 1, will be equal. Geometrically, this would mean zero angularity existing between your driver and driven product: Basically, the shafts of the driver and driven machine will be parallel to each other.
Usually it involves a tubular shaft, two sets of Universal Joints and glove system – ferrule stepper, amongst others. It can be a component of the transmission program, its function can be to redirect the engine turning motion, after moving through the gearbox and the travel to the wheel, going through the ‘planetary and satellite’ system etc.
Our specialised personnel will gladly support you in finding the proper universal joint for your application or will develop a suitable solution according to your unique requirements.
Cardan shaft, also called cardinal shaft, is an element of torque transmission.