Method for producing units with axially movable components

A method for producing an axially movable connection between two components, between which two components a plastic is disposed as a sliding material, the method comprising:

• providing the two components to be joined, wherein
• a plastic sleeve is disposed between the two components, and the two components, and the plastic sleeve are situated free of play with respect to each other;
• joining the two components to form a unit by way of a pressing force in an axial direction;
• clamping the unit in a device in which the two components are clampable and subjectable to a displacement force in the axial direction;
• pressing a sonotrode from one side against an outer of the two components and bracing the outer of the two components against a counter-holder;
• injecting an ultrasound signal into the sonotrode and moving the two components back and forth in the axial direction until a displacement force or a displacement velocity reaches a target value;
• and
• ending the ultrasound signal and removing the unit from the device.