People who have used hydraulic wrenches know that the hydraulic wrench has a swivel joint. And the tool used for a long time, its internal parts also need proper maintenance, in order to facilitate the use of better hydraulic wrench later.

Keep the rotary joint roller and the inside of the pipe clean. Special attention should be paid to the new equipment, if necessary, need to add filters to avoid foreign objects on the rotary joint caused by abnormal wear and tear.

If the machine is not used for a long time will cause the rotation of the internal fouling and rust, please note that if there is a re-use when the stuck or dripping situation occurs.

With the oiling device, please regularly fill the oil, to ensure the reliability of rotary joint bearing operation.

Circulation of hot media medium rotation should be gradually warm, to avoid the temperature change.

Check the sealing surface of the wear and tear and the thickness of the situation (usually normal wear 5 - 10mm); observe the friction surface of the sealing surface to see if there are three points intermittent or scratched and other issues, if the situation is concerned, should be replaced immediately.