?Preset? is a method to reduce the size of upper plates of sliding bearings in order to savethe material cost.
The normal length of a upper bearing plate should be composed of thefollowing components: length of bearing + 2 x irreversible movement + 2 x reversiblemovement.
Initially the bearing is placed at the mid-point of the upper bearing platewithout considering the directional effect of irreversible movement.
However, asirreversible movement norma