Industrial grade excavator rotary coupling is used in applications where multiple rotations of a mechanical structure are required and has a function that allow oil, water, gases and electronics to pass through it while allowing a 360 ° continuous rotation. The coupling can operate at pressures as high as 400 kg/ cm2. The coupling has maximum operating pressure of 290 kg/ cm2. The industrial grade excavator rotary coupling has flow rate ranging from 80 lpm to 150 lpm.