Komatsu 707-99-76190 7079976190 Arm Cylinder Seal Kit For PC400LCSE-8R PC500LC-8R PC500LC-8

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Storage conditions for seals:

1. The storage room temperature of the seals should preferably be below 30 °C to avoid high temperature aging of the seals;

2. The seal must be stored in a sealed package to avoid contact with moisture or dust in the air;

3. The seals must be protected from strong light to avoid the seals being eroded by ozone in the air or prematurely aging.

The factors affecting the performance of various seals are different, such as mechanical seals (packing seals, etc.) affecting factors such as temperature, medium, wear, and pressure.

Precautions:

1. Before designing grooves, please read the descriptions of each series of products by yourself, and clearly distinguish whether the product uses an integral groove or a split groove; during the process of installing the seals, pay attention to avoid sharp edges, and the hole seals must be installed in the integral groove. With the help of installation tools; the designer must consider parameters such as groove dimensional accuracy, surface roughness, extrusion gap, etc. For details, please refer to the product instruction manual, diagram and size table.

2. Before installing the seal, it must be ensured that there are no impurities and cracks in the sealing groove, and operating oil should be applied to the sealing groove and the surface of the seal respectively; the seals should be installed gradually in sequence; Avoid twisting and skewing; if it is a split slot, tighten the gland last.

Influencing factors of seals:

Hydraulic seals play a vital role in the integration of hydraulics and pneumatics. If the seals of a hydraulic and pneumatic component product are not good enough, then this hydraulic and pneumatic component product is not a good product. There are many factors that affect seals.

(1) First of all, pressure is an important factor affecting the quality of the seal. The level of pressure and the length of the pressure cycle change have a great impact on the damage of the seal (such as extrusion). The higher the pressure, the greater the impact of other factors on the performance of the seal, such as temperature, speed, seal material, clearance between the piston and cylinder, and clearance between the piston and cylinder head.

(2) Another one is temperature and friction. It is difficult to describe the maximum use temperature and minimum use temperature of a seal material, because it is the result of the combined influence of a series of factors. For the different working temperatures of the piston and the piston rod, they should be selected differently. Another is the surface roughness of the seal product, the characteristics of the surface, the pressure, the medium, the temperature, the material of the seal, the type of the seal and the speed of movement, which are all factors that affect the seal.

(3)The last one is surface treatment. Experience has shown that the characteristics of the surface of the cylinder piston and piston rod have a great influence on the life of the seal. Surface properties are often defined by the value of surface roughness RA, which is the arithmetic mean of the absolute value of the deviation of the surface shape from the centerline. However, these values ​​do not fully represent the effect of the surface condition on the seal, because even with the same roughness, different surface shape features can cause different degrees of seal wear to the seal.