Stick jack components for construction machinery
Stick jack components for construction machinery include hydraulic cylinders, pistons, bushings, washers, and flow control valves, manufactured from alloy steel and aerospace-grade aluminum. Cylinder working pressure reaches up to 320 bar, and operating temperature ranges from minus 40 to plus 120 degrees Celsius. Piston rods and cylinder shafts are induction-hardened to 55 Rockwell C to enhance wear and fatigue resistance. Bushing dimensional tolerance is below 0.005 millimeters to ensure smooth, backlash-free movement under heavy loads.
The weight of each stick jack component set ranges from 10 to 75 kilograms depending on capacity, with assembly using grade 10.9 bolts. Internal lubrication uses high-pressure, high-temperature hydraulic oil to reduce friction and wear. Flow control valves operate at 250–320 bar to maintain safety and hydraulic system performance. The estimated service life exceeds 12000 hours under standard operating conditions, with geometric design optimized using CAD software and FEA analysis.
