In order to maintain as long as possible TRW bearing in good condition original performance, must be maintenance, testing, overhaul, in order to prevent accidents in the first place, to ensure the reliability of operation, increase productivity, economy. Long-term operation of the equipment is concerned, the usual detection and tracking is particularly important, including the rotation detecting program sound, vibration, temperature, status lubricant bearing in accordance with the detection result, maintenance personnel can accurately determine the problem device, make early prevention and solutions.

Abnormal rotation abnormality diagnostic analysis sound tone detection analysis is the use of the rotation auscultation bearing operational state analysis method of monitoring long wooden handle common tool is a screwdriver, may be used as an outer diameter of about 20mm hard plastic tubes. In contrast, the use of electronic stethoscope monitoring, help to improve the monitoring of reliability. Bearing in normal working condition, smooth, light, no stagnation, harmonious sound without noise occurred, uniform and continuous audible "buzzing" sound, or low "humming" sound.