707-99-77140 7079977140 Arm Cylinder Seal Kit Komatsu Fits PC300LL-7E0 PC350LL-7E0 PC390LL-10

707-99-77140 7079977140 Arm Cylinder Seal Kit Komatsu Fits PC300LL-7E0 PC350LL-7E0 PC390LL-10

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Precautions:

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.

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

Main Advantage:

1. More than ten years of industry experience.

2. Excellent quality and competitive price

3. Large inventory of more than 30,000 sizes and more than 10,000 pieces of inventory.

4. Support OEM/ODM orders.

5. Fast delivery

6. Professional Services

• Guangzhou Suncar Seals Co., Ltd. is a foreign trade company specializing in construction machinery seals. Suncar has a complete management center, professional product consulting services, innovative research and development of product production, efficient logistics and distribution and other organizational structures. At present, the company's business covers many regions at home and abroad.

• Suncar Seals entered the construction machinery oil seal industry in 2008 and has nearly 12 years of oil seal technology experience. Suncar Seals has always maintained its core technology advantages, advanced manufacturing and processing capabilities, scientific management system and complete after-sales system. It is recognized as one of the most promising companies in China's future mechanical oil seal business.

• Suncar Seals has a wealth of experience in production and processing and a good production environment. Product is used for excavators, bulldozers and wheel loaders of Komatsu, C.A.T, JCB, Hitachi, Sumitomo, Kobelco, SUNCARVO.L.VO, KATO, Daewoo, CASE, John Deere and other brands.

• Suncar Seals company provide construction machinery equipment such as loaders and crawler excavators provide high-quality, high-performance, long-life seals and vehicle parts, which solves the problem of maintenance and replacement of construction machinery parts for customers. Relying on its good reputation in the machinery industry, SUNCAR will always maintain its original intention, actively develop and create a unique brand belonging to the company, and provide customers with high-quality products at lower costs, better quality and good service.