My A/C clutch wasn't in bad shape so I replaced the bearing and lightly sanded the faces, now a point that needs to be made is that most clutches that fail can be easily remedied if attended to immediately there is a lip on the pulleys that catch dust and wear material over time this buildup can reach the clutch disk slowly taking pressure off the mating surfaces until slipping occurs, so by cleaning that area with sand paper you can extend your clutch life.
Dave