The double- piston rod hydraulic cylinder is mainly composed of sealing ring, guide sleeve, piston, cylinder tube , cylinder head, gland, piston rod and other parts. Usually live cylinder seamless steel pipe, the inner wall of high precision machining ; piston and piston rod with cylindrical cotter pin connector ; rod guided by a guide sleeve , and with a sealing ring , the adjusting screw between the head and the gland can Adjust the tightness of the sealing ring ; a gap seal is adopted between the piston and the cylinder.
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