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Example application of hydraulic seal |
Reciprocating motion with seals reciprocating, we should associate the cylinder equipment.
According to the JIS standard, the applicable ambient temperature is also different.
7MPa a class, the low pressure cylinder corresponds to 7MPa or lower. Under this pressure order, in order to reduce the energy loss caused by sliding friction, the piston seal is used SPG, the piston rod hydraulic seal is mainly used for the U seal. For the low temperature conditions, it is necessary to use the dustproof hydraulic seal, without LBH, it is recommended to use. The main reason for the DKB of the metal skeleton is that the DKB hydraulic seal has a lower percentage of shrinkage in the diameter at low temperature, so the DKB with a metal skeleton is recommended here. At the same time, the U seal will also improve the sealing ability of the piston.
Medium pressure hydraulic cylinders: under 14MPa or lower pressure, we use low friction SPG (piston seals) and wear resistance rings with high load durability under this operating condition. Similarly, in the low temperature condition, it is not recommended to use the type of LBH, recommended and recommended by the above low pressure cylinder with a metal skeleton DKB hydraulic seal.
The high pressure hydraulic cylinder in the last class: 21MPa. The hydraulic seal of piston rod takes into account the high tolerance of hydraulic seals. The large section U seals are used here. Piston adopts low friction SPG hydraulic seal and high load endurance ring.
The temperature range of the three cylinders under different pressure levels is below 20 degrees Celsius under the standard specification - 80 degrees above zero. The specifications for heat resistance are strictly controlled at minus 10 degrees Celsius - 120 degrees Celsius above zero. The specifications for cryogenic temperatures range from below 55 degrees Celsius to zero above 60 degrees Celsius.
Reciprocating movement with hydraulic seals in the construction equipment: Mobile shovel, small backhoe, wheel type reloader, bulldozer, truck crane, wheel crane, dump truck.
The application of hydraulic seals in industrial equipment: forklift, battery type forklift, garbage truck, combine harvester, tractor, press, mechanical hand, lift, injection machine, multi-layer parking, hydraulic lift, plunger pump, hydraulic crusher, control valve, power steering lamp.
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