Application scenarios include unusual noise, increased vibration, symptoms after maintenance and changes at specific speeds or loads. Prepare the complete designation, measurement points and directions, original vibration records, videos, operating conditions and maintenance timeline. The guide organises information rather than replacing site diagnosis.
Describe a reproducible symptom
State the speed, load and operating stage at which the symptom appears, whether it persists and whether it changes with starting, direction or load. Record the earliest observation and any maintenance, installation or equipment adjustment at that time.
Videos should identify the equipment location and operating conditions. Recording volume is not a professional measurement, and audio alone is not used to determine bearing damage.
Submit vibration records with context
Keep original time-domain, spectrum or trend records where available, stating measurement point, direction, sampling conditions, units and speed. Explain whether conditions are comparable when submitting records from different dates.
Add support arrangement, bearing location and transmission information. Where measurements are unavailable, start with observations and photographs rather than inventing vibration grades or universal acceptance thresholds.
Connect installation and maintenance history
Arrange lubrication, alignment, tightening, replacement and trial-operation records in time order, with temperature changes and inspection photographs. Identify the installed position of removed bearings and associated parts and connect records to the designation.
Separate recorded observations from cause hypotheses before defining inspections. Noise or vibration does not directly establish one bearing failure mode or justify greater clearance or a different structure.
Record the next verification steps
The technical discussion record should contain observations, records used, inspection steps and subsequent verification arrangements. Where removal or further measurement is required, identify safe equipment operating conditions and information to collect.
Follow the equipment safety procedures when handling operating abnormalities. Do not run outside specified equipment limits merely to collect test data.
Continue with on-site references
Structure illustrations are references, not application recommendations. Read parameters for the complete designation.
