F-Type collets are a specific series of collets-often referred to by their metric diameter (e.g., F38, F48, F66)-that are designed for precision machining.
A key feature of F-Type collets is the dead-length design. Unlike traditional draw-in collets, the workpiece does not move axially when clamped. This is crucial for maintaining tight Z-axis precision and is essential in Swiss-type automatic lathes where the tool works directly next to the guide bushing.
They are primarily used for holding small-diameter workpieces (round, hex, or square bar stock) in main and sub-spindles of CNC sliding head and automatic lathes
F-Series collets are typically made from high-grade spring steel and are ground for high accuracy and concentricity, often exceeding the precision of more common collet systems like the 5C series.
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