Measurement of crankshaft arm clearance in reciprocating compressors
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Recently, while disassembling a reciprocating compressor, I had some questions regarding the measurement of the bent arm clearance. Why is it necessary to measure this clearance after checking that the axial runout of the main shaft and the condition of the bearing shells are satisfactory? What is the purpose of it? ? ? Also, those who need pictures of the compressor after disassembly can message me privately.
Personal opinion: Assuming there is no deviation in the levelness of the crankcase bearing seats, measuring the bend arm clearance can reveal the degree of bending of the crankshaft, especially near the coupling end. As the motor generates power, excessive bending of the crankshaft can easily lead to fatigue fractures in it.