What is the decibel rating of the model 7765 rotary hammer? Support October 30, 2020 20:16 Updated The7765 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? What is the process for sending an invention or idea to someone for consideration? Where can I purchase parts for my Gesipa Rivet Tool? What can cause premature pad failure? What is the warranty for my sander and polisher? Comments 0 comments Please sign in to leave a comment.