A rigid strip or block placed around the edges of a type form or plate to bear the weight of the impression cylinder or platen. Bearers prevent the rollers from dipping into the blank spaces and over-inking the edges of the type, and they protect delicate elements from being crushed by taking the brunt of the mechanical pressure.
Heard on the job
Lock a bearer into the chase on both sides of that delicate halftone so the platen doesn't smash it.