What is the decibel rating of the model 7765 rotary hammer? Support October 03, 2022 13:37 Updated The 7765 is rated at a maximum average of 90 db. Note: Ear protection is recommended. Related articles Can I put a 1/2" chuck on a 3/8" drill? How many shots can one expect per fuel cell? What is the process for sending an invention or idea to someone for consideration? What can cause premature pad failure? Where can I find a service center to repair my tools? Comments 0 comments Please sign in to leave a comment.