**Inspection of NTN Imported Bearings During Operation** Home > Bearing Knowledge > Inspection of Iron Bearings in Operation /*728*90 created on 2018/5/16*/ var cpro_id = "u3440131";

Inspection of NTN Imported Bearings in Operation

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During the operation of NTN imported bearings, one of the key indicators to monitor is the vibration. Vibration analysis can detect issues such as looseness, indentation, rust, cracks, and wear. The vibration level of NTN bearings is highly sensitive to internal damage, so using specialized vibration measuring devices like frequency analyzers can help identify significant abnormalities. The placement and orientation of the sensor equipment can affect the readings, so it's important to compare measurements from different machines beforehand and establish a baseline for comparison. Another method is to listen to the sound produced by the NTN bearing during operation. Minor damages such as peeling or deformation can cause unusual noises. A stethoscope can be used to distinguish between normal and abnormal sounds. By analyzing the rolling sound quality, early signs of potential problems can be identified before they escalate. Temperature monitoring is also crucial. If possible, directly measure the outer ring temperature of the NTN bearing. Normally, the temperature gradually increases after startup and stabilizes within 1–2 hours. However, if the temperature rises sharply, it may indicate an issue, and the machine should be stopped immediately for inspection. Checking the axle condition is another essential step. Before any race or competition, identifying early signs of wear in the bearing can prevent more serious failures. Early detection and replacement are vital for both professional and amateur drivers to maintain performance and safety. A simple yet effective method is to touch the bearing with your hand. If it feels excessively hot, it could indicate overheating due to lack of lubrication or mechanical stress. This sensation can reveal whether the bearing is smooth or if there are irregularities such as dents or misalignment. Inspecting the appearance of the bearing is also important. Check if the seal is intact and open it to examine the lubricant. If the oil appears black, it may be contaminated or carbonized. If it’s cloudy and white, water contamination may be present. The sooner these issues are detected, the better the chances of preventing further damage. Using an electronic stethoscope is another reliable way to assess the bearing’s condition. Normal operation produces a steady hum, while buzzing or sharp noises may indicate irregularities. Squeaking sounds could signal oil contamination, and irregular murmurs might suggest damage to the raceway. For simpler checks, you can use a wooden stick placed on the fork of a bicycle or the frame to listen to the bearing’s sound. However, this method may not be as accurate for the rear axle due to background noise. **Related Bearing Knowledge** - Intake and Exhaust Control Motor Bearing - SKF Spherical Roller Bearings – "Device Skills Explanation" for Coded Angle Touch Ball Bearings - Discussion on Decoupling Control Strategy of Permanent Magnet Type Bearingless Motor This article is linked to http:// Please indicate China Bearing Network http:// Previous: The Bearing Device Method Next: "Motorcycle Bearing" Protection Method – Keep It Looking New

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