Which factor is NOT typically a focus of gear tooth design?

In gear tooth design, the primary focus is on performance-related factors that affect how well the gears will function in their application. Wear resistance is crucial because gears often experience significant friction and contact stresses during operation. Ensuring that the gear material can withstand wear maximizes its lifespan and reliability.

Tooth shape and profile are also fundamental considerations in gear design. The shape affects how gears mesh, their efficiency, and how they transmit power, making it essential to optimize these parameters for the specific application. Material strength is vital as well, as the gears must endure various loads without failing. A strong material helps prevent deformation, fractures, or other mechanical failures under operational conditions.

In contrast, while visual representation can be important for understanding designs and concepts, it does not directly impact the mechanical performance or functionality of the gear itself. Therefore, it is not a typical focus of gear tooth design in terms of engineering principles and practical applications. The emphasis on performance-driven factors overshadows aesthetic considerations in most gear design processes.