Hydraulic Cylinder Trunnion / Cylinder Eye for Construction Machinery
This hydraulic cylinder trunnion, also known as cylinder eye, is a heavy load-bearing casting component for excavator hydraulic cylinders, widely installed on boom, arm and bucket cylinders of crawler construction machinery. It serves as the pivotal hinge joint connecting hydraulic cylinders and equipment frames, bearing alternating tension, compression and impact loads during continuous operation.
The product adopts high-strength cast alloy steel as raw material. After precision casting, rough machining and finish boring, the inner hole achieves high dimensional accuracy and smooth surface. Reinforced structural design effectively disperses stress and avoids cracking under heavy-load working conditions such as mining, rock breaking and earthmoving. The protruding positioning strip on the top ensures accurate positioning during cylinder assembly, preventing rotational displacement while working.
Strict multi-step quality control runs through the whole production process. Raw material composition inspection, nondestructive crack detection, dimensional tolerance testing and surface examination are carried out before delivery. Unqualified castings will be eliminated to guarantee stable mechanical performance.
For export logistics, each cylinder trunnion can be wrapped separately to prevent scratches and collision damage. Bulk goods are loaded into export wooden cases with buffer protection. The standardized packaging keeps components intact during long-distance sea transportation.
We supply multiple sizes of cylinder trunnions compatible with mainstream excavator brands including Komatsu, Hitachi and Caterpillar. Stable raw material quality and precise machining extend the service life of hydraulic cylinder assemblies, reducing unexpected breakdowns and maintenance costs for end users.
Our warehouse maintains sufficient stock to support prompt shipment. Customized production is available according to customer drawings. Reliable hydraulic cylinder castings help global machinery dealers and repair shops deliver long-lasting spare parts for construction projects.
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