7.2.5 Preload Classes
The preload classes are defined as a fraction of the dynamic load capacity C (see chapter 17). The amount of preload is generally based on the intended use of the guideways.
An increased preload …
- … increases the rigidity
- … increases the displacement resistance
- … reduces the service life
| Preload class | Preload | corresponding accuracy class |
|---|---|---|
| V0 | slightly play up to 0.01 • C | G3 |
| V1 | 0 to 0.03 • C | G1 or G3 |