The expected service life in operating hours indicates how long a machine or plant component is expected to operate under defined operating conditions. It is based on service life calculations, load profiles, and empirical data, and serves as an important basis for maintenance, replacement, and operational planning.
This metric is particularly relevant for estimating the service life of ball screws, bearings, motors, and drive units. In addition, it supports maintenance and inspection planning, the selection of suitable components, and the assessment of cost-effectiveness and reliability.
The actual service life is influenced by several factors:
- Load Profile: Magnitude, Frequency, and Duration of Loads
- Rotational Speed and Feed Rate:These factors affect friction, heat generation, and wear
- Lubrication and Sealing Systems: These are critical for low-wear operation
- Preload and Bearing Arrangement: These factors influence forces, stiffness, and accuracy
- Operating Environment: Temperature, dust, and humidity can significantly reduce service life.
The service life is converted from revolutions to operating hours using the following formula:
The following applies:
= Service life in operating hours,
= Service life in revolutions,
This makes service life, measured in operating hours, a practical metric for evaluating the technical suitability of components and planning maintenance measures in a targeted manner.