A spindle capper is a type of machine used to apply caps or lids to containers such as bottles, jars, and tubes in a manufacturing or packaging environment. The spindle capper is designed to handle caps that are screwed onto containers, such as those commonly used in the food and beverage, pharmaceutical, and cosmetic industries.The spindle capper typically consists of a rotating spindle that holds and applies the caps to the containers. The containers are fed into the machine on a conveyor belt and are positioned under the spindle. The spindle then rotates and applies the caps to the containers by pressing them down and screwing them on tightly.