The Cat 305.5 excavator hydraulic cylinders include two boom cylinders, one stick cylinder, and one bucket cylinder. The cylinder diameter is 120-140mm, the stroke is 1030-1430mm, and the working pressure reaches 34.3MPa. They are responsive and reliably sealed, providing strong power and precise control for excavation operations.
Cat 305.5 excavator hydraulic cylinder core parameters
| Type | Quantity | Bore diameter | Rod diameter | Retractlon | Stroke | Corresponding excavation force | Adaptive pressure |
| Boom cylinder | 2 | 120mm | 55mm | 1450mm | 1260mm | Overall lifting force | 24.5–25.2 MPa |
| Stick cylinder | 1 | 140mm | 55mm | 1620mm | 1430mm | Stick digging force: 27.2–27.4 kN | 24.5–25.2 MPa |
| Bucket cylinder | 1 | 120mm | 55mm | 1220mm | 1030mm | Bucket digging force: 35–35.3 kN | 24.5–25.2 MPa |
Runhe Hydraulics is a premium hydraulic manufacturer, supplying high-strength excavator hydraulic cylinders with stable performance and precise stroke. We offer full models, OEM customization, global delivery and professional after-sales for excavator hydraulic systems.
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