Zhejiang Jiangxin Hydraulic Technology Co.,Ltd.
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Applications
Advancing intelligent manufacturing and hydraulic innovation through independent R&D.
Applications
Construction & Engineering Machinery
Construction & Engineering Machinery
Covers mainstream construction equipment including excavators, wheel loaders, bulldozers, road rollers, motor graders and truck-mounted cranes. Hydraulic cylinders actuate the boom, arm, bucket, steering and lifting movements, directly determining the machine's power density and productivity.
Excavator
loader
Bulldozer
Road roller
Grader
Truck-mounted Crane
Excavator
loader
Road roller
Road roller
Grader
Truck-mounted Crane
Key Challenges
1
High Pressure & Flow
Alternating dust, mud, high and low temperatures stress the wiper seal and rod coating.
2
Harsh Environment
Counterbalance or pilot-operated check valves are mandatory to lock under hose burst.
3
High Side Load
Boom and arm cylinders absorb heavy side impacts during digging, accelerating bushing wear.
4
Long Service Life
Customers expect 8,000+ hour overhaul cycles — cylinders must not be the weak link.
5
Oem Compliance
Drawings, pressure tests and paint specs must match major OEMs (SANY, XCMG, CAT-tier suppliers, etc.).
Our Solutions
Barrels upgraded to 27SiMn / 30CrMnSiA, welded by SAW + robotic welding, 100% UT-inspected.
Piston rods in 42CrMo Q&T with nickel-chrome composite plating, salt-spray ≥ 720h for shock + corrosion resistance.
Gland and piston use QSn7-0.2 tin-bronze / cast-iron inserts with DU composite bushings to withstand side loads.
Double-lip wiper + scraper ring for dusty conditions.
Entire range validated at 35MPa; flanges, eyes, pin interfaces and paint colors customizable to OEM drawings.
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