Mechanical design engineers planning a drivetrain typically have a range of component options to choose from, and many decisions will boil down to the specific application. When it comes to creating optimal torque output, rotational speed and direction, few decisions are as important in designing high performing gear drives as choosing the right gear for the job. 

Gear backlash in precision applications is a critical element of gear system performance. Too much backlash can result in inefficiencies of motion in the gear train and will ultimately damage a gear’s teeth. Too little can mean the gears bind up and cause excessive wear to the tooth’s surface and the root of the gear, or even the fracturing of a tooth. Establishing and setting the appropriate amount of backlash is essential in gear design and manufacturing, according to Berg, a Regal Rexnord Brand.