the right use of rotary joints

Rotating joints are common sealing components in industrial equipment, used for the transmission of fluids or gases. Proper use of rotating joints can extend their lifespan and ensure the safe operation of the equipment. Here are some key precautions for use:
Long-term non-use of the machine can lead to rust and damage of the rotary union. Please be aware that it may become stuck or leak when used again.
Do not allow the swivel union with misaligned rotation centers to continue operating, as it may cause wear or damage.
The inlet and outlet of the swivel union must be equipped with hoses, and steel pipes must not be used as substitutes, in order to reduce vibration and stress.
Choose a hose with good selectivity and maintain an appropriate length to ensure flexibility and resistance to cracking.
Do not directly attach other accessories to the inlet and outlet of the swivel joint. If necessary, add them after the hose.
The interior of the piping and rollers should be kept clean, as new machines often suffer from abnormal damage to the rotary unions due to internal uncleanliness.

The appropriateness of the support device for the rotary joint affects its stability and service life.
Both the rotating shaft and the fixed inner tube of the rotary union must be designated as either left-handed or right-handed, and care should be taken to ensure the correct rotational direction during design and manufacturing.
Use a swivel union that meets the specified conditions (refer to fluid, pressure, size, speed, rotation direction, inner tube, or other necessary coordination items).
When selecting and assembling the inner tube, attention should be paid to the fit of dimensions and whether it is excessively heavy.
When using threaded rotary unions, attention should be paid to whether the thread specification of the connection is correct and whether the length of the locking roller is sufficient.
During transportation, swivel unions should be handled with care to avoid collisions or falls, as these can easily cause bending of the rotating shaft and cracking of internal components.
When the fluid is not flowing, avoid prolonged operation to prevent damage from dry grinding.