The book “Calculation of the reliability of machines and their elements” by Sergey Nikolaevich Vikharev is an indispensable work for everyone who is interested in engineering, mechanics and machine design. In today's world, where the reliability of equipment plays a key role, this publication becomes a real guide to complex issues related to the assessment and improvement of the reliability of machines and their components. In his pages, the author offers readers a deep dive into the foundations of reliability theory, starting with the definition of key concepts and ending with complex calculations. Vikharev shares his knowledge and experience, explaining how to correctly assess the probability of failures, conduct statistical analysis and use modern methods to improve the reliability of machines. The book covers a wide range of topics, including methods for calculating reliability, the impact of various factors on the durability of machines and how to optimize them. Each section is written with clarity and accessibility, which makes the material understandable even for those who are just beginning their journey in this area. This book will be especially interesting for students of technical universities, graduate students and practicing engineers working in the field of mechanical engineering, as well as all those who seek to deepen their knowledge in the field of reliability and durability of machines. It will be an excellent addition to training courses in mechanics, machine theory and mechanics, as well as in control and automation systems. Readers interested in topics related to the design and operation of technology will find in it a lot of useful advice and recommendations. The topics raised in the book are relevant and important in light of the current challenges facing mechanical engineering. In the face of fierce competition and a constant drive to improve efficiency, the reliability of machines is becoming one of the key success factors. Vikharev emphasizes that lack of reliability can lead to serious economic losses and even threaten people’s lives. Therefore, the study of calculation methods and increasing reliability is not just a theoretical task, but a practical necessity for any engineer. Sergey Nikolaevich Vikharev is a well-known specialist in the field of mechanical engineering and reliability, the author of many scientific articles and textbooks . His style of presentation is clear and logical, which allows the reader to easily assimilate even the most complex concepts. In previous works, Vikharev has already established himself as an author capable of conveying complex ideas to the reader in a simple and accessible language. In "Calculation of the reliability of machines and their elements" he continues this tradition, offering readers not only theoretical knowledge, but also practical recommendations that can be applied in real work. The book also includes many examples and tasks, which makes it not only a theoretical, but also a practical tool. Readers will be able to test their knowledge and skills by solving the proposed tasks, which contributes to a deeper understanding of the material. If you are looking for a high-quality and up-to-date edition on calculating the reliability of machines, which will help you not only in your studies, but also in your professional activities, then “Calculation of the reliability of machines and their elements” by Sergey Nikolaevich Vikharev is exactly what you need. This book will become a reliable assistant on your way to mastery in the field of mechanical engineering and reliability of machinery.