The DeWalt N309480 Impact Wrench Armature Assembly is a part of the motor that rotates and comes in contact with the magnetic field to produce the strong rotating force that is used in tightening and loosening nuts and bolts. This assembly functions in the manner that it transforms electrical energy to mechanical energy which in turn operates the impact mechanism. Some of the advantages of a properly maintained armature are smooth power output, longer life of the tool, and smooth running.
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