Assemblies in accordance with the present invention can replace cumbersome and potentially contaminating bearing assemblies for rotary actuators. One such assembly comprises a bearing assembly with a threaded base for insertion into a bore, wherein the bore includes threads for engaging the threaded base of the bearing assembly, eliminating the contamination associated with glueing. The bearing assembly is designed such that it can be disconnected from the rotary actuator for rework without damaging or contaminating the rotary actuator or bearing assembly.