Komatsu Arm Cylinder Repair Seal Kit 7219801981 721-98-01981 For PC360LCI-11 PC390LCI-11

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Company mission and pursuit:

SUNCAR Linkage World

Serve the world with quality and innovation

Firm faith, brave to open up

Demand oriented

Customer focus

Integrity

Efficiency

Innovation

Transcendence

Focus on quality and pursue excellence

Make full use of man's talent

Related Part:

Key points for the use of seals:

1. Select the appropriate seal material and hydraulic oil, as well as the adaptability to the working temperature and the compatibility of the oil.

2. The geometric position accuracy (concentricity) of the sliding parts relative to the seal is high, the material is good (such as hard chrome plating) and the surface roughness is fine, which can prolong the service life.

(1) For oil seals used in hydraulic pumps and motor journals, it is not only required that the roughness of the sliding surface be within Ra of 0.25m, but also that the surface should be plated with hard chrome, and the oil seal lip should be properly adjusted according to the specific situation during specific use. The radial spring force makes it moderately tight, and a mounting sleeve or a thin gasket should be used to protect the sealing ring during installation to prevent the lip from rolling and twisting, causing the spring to slip out.

(2) The inner surface of the hydraulic cylinder is usually processed by rolling, which not only improves the surface roughness, but also makes the surface hardened by cold work, which is beneficial to prolong the service life of the sealing ring. In addition, the pressure used, the length and type of the sliding surface also have a great influence on the service life. Therefore, the "regular inspection" time should be decided according to these conditions.

(3) The sealing surface is required to be well lubriC.A.Ted to prevent dirt from invading. The use of fluids that meet the specified cleanliness levels and the correct installation method are also necessary conditions.

Suncar History:

In 2009, The company established Global construction machinery equipment Store, mainly engaged in the wholesale and sales of secret sealing sets, loader sealing sets, bulldozer sealing sets, crushing hammer sealing sets and other sealing parts related to construction machinery, covering more than 30 cities in China.

In 2013, Guangzhou Global Sealing Technology Co., Ltd. was established, and a sealing parts factory was set up, mainly producing various types of construction machinery seals, laying a solid foundation for the enterprise to expand and strengthen.

In 2014, the company began to transform its business and expanded its sales scope from domestic market to overseas market. Since then, the company established another trading company -- Guangzhou Suncar Construction Machinery Co., LTD.

In 2020, our company will fully upgrade its brand and set up management and service centers in overseas markets to face the world with a unified brand image.