This graduate thesis investigates various measurement methods that are crucial in the preventive maintenance of machinery in the cement industry. Methods such as thermography, vibration diagnostics, ultrasound, tape hardness measurement, chain stretching and oil analysis are particularly highlighted. Thermography is used to measure the temperature of equipment in order to detect potential functional problems before failure occurs. Vibration diagnostics enables the analysis of machine vibrations, which can indicate abnormalities in operation, such as imbalance or bearing wear. Ultrasound is used to detect air or fluid leaks and to identify mechanical problems that are not visible to the naked eye. Measuring the hardness of the bands and the stretch of the chain are important indicators of the condition of these parts of the equipment, which makes it possible to monitor their wear and to plan a replacement before a failure occurs. Oil analysis is also crucial because it allows monitoring the condition of lubricants in machines, detecting the presence of metal particles or other impurities that may indicate possible problems in the equipment. The combination of these methods allows maintenance engineers to develop a comprehensive overview of equipment health and identify potential problems before they lead to more serious breakdowns or production downtime. This is essential for maintaining high efficiency and reliability of equipment in the cement industry. This paper describes the specific methods used in the company Holcim d.o.o.