The worm gear is an important part of the meat slicer. The QX/QH/QE and QSJ-A produced by our company use this part. The specifications are the same. Please be assured when purchasing. This part will wear out when it is used for a long time or overload and needs to be replaced: if the toolset is stuck or the transmission mechanism fails during operation, the part will also be broken and damaged, so as to avoid the motor burning and burning. After replacing the worm gear, be sure to clean the gearbox and refill the lubricant to keep the gear set in good working condition.