Spring chuck is also known as elastic collet , is a kind of drilling and milling chuck installed on the drilling and milling machine, its function is clamping drilling cutter or milling cutter, at this stage is more used ER elastic collet, its performance is stable, high accuracy, trusted by the majority of manufacturers.
There are many models of spring chucks, which are characterized by radial runout only half of C-shaped collets, which greatly improves the accuracy of the product in the processing process. At the same time, light weight, fast acceleration, small influence by centrifugal force, and high concentricity when quickly clamping parts are replaced, the size range of the workpiece suitable for the chuck can be quickly exchanged, the limited axial size is long, more suitable for small parts, more suitable for the workpiece with the same diameter and size three-jaw electric chuck, is the standard workpiece clamping device for most lathe users, this chuck has enough versatility and can be applied to a variety of turning processing. However, it is not a fixture for all machining tasks.