Questions to ask yourself before you start:

What positioning do we want ?

A cylindrical recess with total immobilization.

What constraint tool can we use ?

Attachment
which makes the designated constraint elements coincide with complete immobilization (adjustable).
 

 Pre-position the bearing instances using the move tool.
 

 Select in the tree the chassis constraint element (defined in the preparation phase) corresponding to the bottom circle of the counterbore receiving the bearing, then while keeping the Ctrl key pressed, select in the tree the constraint element of the 1st instance of pad corresponding to the circle of the pad shoulder, then apply the constraint.
 

 Proceed in the same way with the following instances of bearings in order to constrain them to their respective locations of the chassis.
Result

A recap video will be available at the end of this cycle.