The most frequently used collet types in machining applications are ER, R8, and 5C collets. R8 collets are mostly used in milling applications and do not require a separate toolholder, while 5C collets are designed for workholding in lathes, rather than for toolholding. ER collets are used throughout the industry for toolholding and workholding, in both mills and lathes.
Learn more about our precision-engineered ER collets.