Working principle and maintenance of hydraulic rotary joint

he housing of the hydraulic rotary joint and the unwinding or coiling machine remain relatively non rotating. Hydraulic rotary joints usually have three oil ports connected to workshop pipelines. For example, if the inner diameter of the core shaft is smaller than the diameter of the housing, its gap is equivalent to the gap between the cylinder barrel and the piston of a typical hydraulic cylinder. It cannot withstand too high pressure, generally not exceeding 3 bar, but has sealing performance at low pressure and high speed. Its function is to seal the oil leakage of the hydraulic rotary joint rotation seal. Other leaks are discharged back into the fuel tank at very low pressure to protect the seals from damage. It should be noted that the filter cannot be installed on the leaking oil pipe as it is widely used. The working principle of its hydraulic rotary joint is driven by hydraulic pressure, providing high torque output. It is a professional bolt tightening tool used for bolt installation and disassembly, commonly used for tightening and loosening bolts larger than 1 inch. It is widely used. In industries such as shipbuilding, petrochemicals, construction, power, mining, metallurgy, hydraulic wrenches are important tools for installing and dismantling large bolts.

Attention should be paid to maintenance and upkeep of any product during use, which can reduce failure rates, extend its service life, and rotate joints. Several issues to be noted in the maintenance of rotary joints:
When the medium is not connected, the rotary joint should avoid idling or prolonged operation. Long term machine shutdown may cause rusting and damage to the rotating joints, resulting in the machine getting stuck or leaking when starting. The medium inlet and outlet of the rotary joint must use hoses. Suggest using flexible metal corrugated pipes instead of steel pipes. It is not recommended to install other accessories (such as valves, filters, etc.) directly at the inlet and outlet of the medium. If fittings must be added, they can be added to the back of the hose and above the pipe. When installing the fixed support device for the rotary joint, ensure that the rotary joint can swing freely.