Some common mechanical preventive maintenance tasks for a cement rotary kiln include:
7. Kiln Drive and Pinion Maintenance
 - Inspect the kiln drive motor, coupling, and reducer. Check for abnormal vibrations, noise, or overheating.
 - Ensure the pinion shaft and gear mesh properly and are well-lubricated.
8. Support Structure Checks
 - Inspect the kiln support rollers, trunnions, and bases for wear, alignment, and foundation integrity.
 - Tighten any loose bolts or structural connections.  9. Kiln Shell Ovality and Crank Inspection
 - Measure and record kiln shell ovality to monitor the deformation of the kiln during operation.
 - Inspect for shell cracks, both circumferential and longitudinal, which can indicate stress or overloading.
10. Thermal Scanning
 - Perform regular thermal scanning of the kiln to detect hotspots, which may indicate internal issues like refractory failure or improper heat distribution.
 11. Refractory Inspection
 - Regularly inspect the refractory lining for wear, spalling, or damage. Replace damaged or worn-out bricks or castables to prevent heat loss and shell damage.
12. End Seals and Cooler Inspection
 - Check the kiln end seals and cooler components for wear, damage, and proper function. Ensure smooth transfer of clinker from the kiln to the cooler.
13. Vibration Monitoring
 - Perform regular vibration analysis on the kiln drive system, girth gear, and rollers to detect any anomalies or signs of mechanical failure.