What should the surface temperature of the piston rod in a piston compressor not exceed?
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After the major repair of the unit’s compressor, the surface temperature of the piston rod was a bit high. However, the requirements specified in the standards aren’t very clear; for compressors with oil-based and oil-free lubrication, what should be the maximum allowable surface temperature for the piston rod?
According to the provisions of **standard GB/T18430.1-2007 \"Compressors\", for piston compressors that have been properly sealed and use oil-free lubrication, the surface temperature of their piston rods should not exceed 60℃； For piston compressors lubricated with oil, the surface temperature of the piston rod should not exceed 120°C. Therefore, it is necessary to determine whether the surface temperature of the compressor piston rod is normal based on the compressor’s operating conditions and lubrication method. .
This temperature limit is primarily determined based on the physical and chemical properties requirements of the lubricating oil at the oil seal, with the temperature limit of the sealing material on the piston rod side of the cylinder also serving as a reference point. Therefore, it is advisable for the equipment manufacturer to provide the relevant technical parameters for reference.