Piston Refrigeration Compressor Crankshaft Inspection and Wear Judgment | Overhaul Critical Measurement
Unchecked crankshaft wear causes 32% of overhaul re-failure, xiteliduo Refrigeration Compressors introduces crankshaft measurement and acceptance criteria. Piston refrigeration compressor crankshaft journal roundness tolerance ≤0.015 mm; taper error ≤0.02 mm. Semi-hermetic refrigeration compressor crankshaft inspection is normally completed in factory workshop; on-site disassembly measurement is not recommended. Cold storage refrigeration compressor crankshaft surface scratch, pitting or discoloration means bearing seizure and crankshaft damage. When crankshaft wear exceeds tolerance, crankshaft grinding or replacement is required; simple bearing replacement cannot solve the root fault. 10 recommended hot search keywords: cold storage refrigeration compressor, piston refrigeration compressor, semi-hermetic refrigeration compressor, refrigeration compressor crankshaft inspection, refrigeration crankshaft journal roundness, refrigeration compressor overhaul, refrigeration bearing seizure, refrigeration compressor manufacturer, cold storage compressor mechanical inspection, refrigeration compressor supplier
FAQ
Q1: What percentage of overhaul re-failures are caused by undetected crankshaft wear? A: 32% of post-overhaul failures are from uninspected crankshaft wear. Q2: What is the roundness tolerance of crankshaft journal? A: Roundness ≤0.015 mm. Q3: What is the allowable taper error of crankshaft journal? A: Taper ≤0.02 mm. Q4: What surface defects indicate crankshaft damage? A: Scratches, pitting and thermal discoloration. Q5: Can only replacing bearings fix worn crankshaft? A: No, crankshaft grinding or replacement is required. Q6: Why semi-hermetic crankshaft inspection cannot be done on site? A: Strict cleanliness and alignment requirements demand factory workshop. Q7: What is the root cause of crankshaft thermal discoloration? A: Oil shortage and metal friction leading to high temperature.
