Huaqing YH series Oil Lubrication stern shaft seal
It is surely the more resistant propeller shaft mechanical seal on the market. The YH series, in comparison with all the existing propeller shaft mechanical seals, is the first in the world to be equipped with a double series of springs. This allows it to better compensate for angular and radial misalignments. Inside of it, in the rotating part, there is another international recognized innovation: the pumping ring. This technology, newly introduced in the propeller shaft seals, ensures that the cooling fluid (usually water) is distributed to a greater and better extent on the sliding faces, increasing the heat dissipation and thus reducing consumption. All this allows YH series to achieve performance over 60.000 hours of operation before maintenance. Of equal importance is the design, as its compact size allows the seal to be one of the axially smaller solutions in the world. Thanks to the "Repair Kit" in two halves the maintencance can be caried out directly on the mechanical seal without decoupling the shaft from the coupling. Additionaly, the YH series together with the hydraulic barrier system (Watershield) allows to carry out maintenance with the boat in the water. It is designed for shafts with diameter 50 mm to 800 mm. There are different possible material configurations and it is the only product to be certified, as standard, for fire resistance. The stationary flange can be designed with a maximum of 6 radial holes that allow to connect: one or more auxiliary cooling lines for the bearing, a pressure gauge, a temperature gauge, a flow gauge or a axial/radial vibration sensor. Suitable for all applications, it is the best product for mega yachts, passenger and military vessels.
OPERATING LIMITS:
D= 50 - 1150mm
P1= 2.0 bar
T= - 25 + 110°C
V= 7 m/s.
Axial movement: up to +/- 8.0 mm
Radial movement: up to +/- 6.0 mm
Angualr movement: up to 2°ELASTOMERS MATERIAL:
Epdm (E)
Nbr (N)FACES MATERIAL:
Silicon carbide
Tungsten carbide
Antimony carbon
Resin carbon
Complaint
