High Quality Double Acting Piston Telescopic Hydraulic Cylinder
OEM hydraulic cylinder for hitachi EX200
Supply full range of excavator cylinders for Hitachi, Caterpillar, Volvo, Kobelco, Komatsu, Kato, Sumitomo, Liugong, Liebherr, etc machines
All forged ear rings, proper treatment on Q+T, washing+cleaning, Chrome plating, assembling.
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| Rod material | Tube material | Seals | Tube cleaning | Chromium coating |
| 40Cr/45# steel Q+T | 27SiMn/20# steel | Kaden/Aston | Ultrasonic/high pressure chemical liquid | 30-60 micro |
-- A lot cylinder fails because of rod scratched by it's machined steel scraps from the beginning
-- A lot cylinders fails because of too thin chromium coating or wrong treatment of hydraulic rod before coating : We treat hydraulic rod properly and have from 30 to 60 micromillimeter chromuim coating for different type or tonnage rate hydraulic rod -- free from chromium peel off or rusting. -- Heavier chromium coating available for big hydrauli cylinders.
-- A lot cylinders fails because of saving 2 dollars on seals to get their cylinders sell cheap and quick not thinking of after sell services. -- We only use proper quality seals, although it cost bit more.
-- A lot cylinders fails because of use lower grade steel and no proper Quenching and Tempering to save 20 dollars in cost. -- We use proper steel and treat steel properly according to ISO standard on hydraulic cyliners.
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