2025年12月26日

When inspecting the feed motor for pellet stoves, we often notice a small horizontal through-hole in the middle of the motor’s output shaft. Typically, a milled-edge shaft would suffice for the motor’s function. Why, then, is this hole required in the shaft for pellet stove applications? Drawing on years of experience designing and manufacturing pellet stove motors, Fengtech explains the rationale from the perspectives of reliability, safety, stability, and ease of subsequent maintenance. 1. Working Principle The shaft with a hole in the middle is called a “perforated shaft,” primarily used for pin-type connections.In applications, the auger is typically connected to the motor shaft in the following ways:Spring pinDowel pinShear […]