我输油站热媒炉由VW-0.42/7型全无油润滑空压机提供雾化风。投入运行三年多来,连续运行不超过500h,就会产生排出压力不足,声音异常,影响热媒炉的正常运行。经多次解体检查发现,均是由于活塞销、滚针轴承和连杆小头磨损,致使滚针轴承架断裂、滚针脱落、连杆小头间隙增大、滚针轴承松 I am a thermal station furnace by the VW-0.42 / 7 no oil-lubricated air compressor to provide atomized wind. Put into operation more than three years, continuous operation does not exceed 500h, there will be insufficient discharge pressure, abnormal sound, affecting the normal operation of the thermal media furnace. After many disintegration inspection found that are due to the piston pin, needle roller bearings and small head wear, resulting in needle bearing frame fracture, needle drop, connecting rod head clearance increases, needle bearing loose