To determine whether the bearing of the organic fertilizer granulator needs to be replaced, it can be judged by the following methods:

1. Observe the appearance of the bearing: check whether the bearing has wear, cracks, deformation or other damage. If the bearing surface shows obvious wear marks or damage, it may need to be replaced.

2. Listen to the running sound of the bearing: Use a stethoscope or a screwdriver and other tools close to the bearing to listen to whether there is abnormal noise during its operation, such as sharp hissing, rattling or abnormal vibration, which may be signs of bearing damage.

3. Check the vibration of the bearing: Use vibration analysis instrument to detect the vibration of the bearing, abnormal vibration may be a signal of bearing failure.

4. Monitor the lubrication status of bearings: regularly check the quality and quantity of lubricating oil, if the lubricating oil deteriorates or is insufficient, it may lead to premature bearing wear.

5. Operating performance of bearings: If the operating performance of organic fertilizer equipment is reduced, such as reduced production efficiency and poor product quality, it may be caused by bearing wear.

6. Use professional tools for detection: bearing fault diagnosis tools, such as bearing fault diagnosis instrument, can be used for more accurate detection.

Combining the above methods, it can be more accurate to determine whether the bearing of the organic fertilizer granulator needs to be replaced. If there is a problem with the bearing, it should be replaced in time to avoid greater equipment damage and production disruption.