The judgment and maintenance methods for heating of needle roller bearings are as follows:

1. Judgment method: During operation, measure the surface temperature change through touch or temperature detector. If the temperature is too high or there is a significant warming trend, it is an abnormal phenomenon. The machine should be stopped to check the cause and take measures to ensure safety performance and extend the service life; If there is a problem with poor lubrication, it is necessary to clean and add lubricating grease in a timely manner, and improve the ventilation conditions of the working environment to reduce the environmental temperature load and ensure smooth operation to avoid overheating faults and damage accidents. In short, once the temperature rises, immediate measures should be taken to prevent the situation from worsening and affecting the production schedule and equipment service life, which may have adverse effects; Regular maintenance and upkeep of equipment to ensure normal operation and safety, as well as the quality of equipment operation, is one of the key measures to safeguard the interests of the enterprise.   If there is a situation where the operation is not flexible during use, an appropriate amount of lubricant can be added to ensure that its function can operate normally, thereby reducing the probability of problems occurring during use and maintaining work efficiency to achieve optimal results. This effectively improves the safety factor of the machinery, promotes the development of the enterprise, and increases the economic profit value; As for repairing or replacing related parts, please seek personnel to ensure safety and avoid unnecessary losses and risks caused by misjudgment! The above content is for reference only. For specific details, please consult technical personnel for more information for reference, learning and communication. Thank you for your attention and support. Have a pleasant cooperation