Aluminum Chuck for 38-46mm Caps

Standard Aluminum Chucks
Standard aluminum chucks are by far the most common type of chuck. They are a good choice for most cap tightening applications. A standard chuck is an aluminum shell, or cup. A soft urethane or white rubber liner is pressed into the chuck by hand, creating a tight fit between the chuck and liner. During the capping process, the liner contacts the cap and creates the grip with the cap. The capping machine uses the grip generated by the liner to tighten the cap onto the bottle. The role of the chuck is to create a rigid support for the soft and pliable liner while also serving as the means to connect the liner to the capping machine. Our standard chucks come in 16 sizes to fit caps ranging from 10mm - 130mm in diameter. Each chuck size will work with a particular cap range. It may be necessary to purchase additional chucks if you will be tightening multiple cap sizes.