The oil cylinder is easy to get in foreign objects. There are mainly these: 1. Foreign bodies enter due to poor maintenance; 2. When the oil cylinder is installed, dust enters the cylinder; 3. The burr of the parts is not cleaned. Foreign objects entering the cylinder from the pipeline: 1. When machining threads or welding at both ends of the pipe, chips or welding foreign objects are brought into the cylinder. 2. The threaded connection pipe joint with sealing tape is used. When tightening, it is inevitable that the sealing wire is cut off and taken into the pipe and into the cylinder. Foreign objects brought in from the operation of the cylinder: 1. When the pressure on the sliding surface of the piston and the cylinder is abnormally increased, it may cause sintering, generate metal fragments, and scratch the cylinder wall. 2. There are chamfers on both sides of the sliding surface of the piston. The chamfer size and surface finish should be strictly controlled, otherwise the casting particles at the corners will peel off during the sliding process, resulting in loss of the sliding surface. 3. The plunger of the buffer structure is tighter or the lateral load on the piston rod is larger.
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