Uneven thickness. Stator motor punching sheet is the key component of motor. The uneven thickness of silicon steel sheet will lead to the phenomenon that one side of the core punching sheet is thick and the other side is thin. Then the stator core is welded by overlapping multiple core punching sheets. Stator blades, also known as stator punching sheets, are stamped from 0.3mm silicon steel sheets and become punching sheets with different specifications to adapt to different power motor stators.