A Vertical Long Stroke Two-Jaw Power Chuck is a type of chuck used in machine tools, particularly in turning operations like lathes or CNC machines. Here’s a breakdown of its components and function:

• Vertical: This refers to the orientation of the chuck. In a vertical chuck, the spindle axis is oriented upwards, which is useful for certain applications where the workpiece needs to be held vertically.

• Long Stroke: This indicates that the chuck has a long travel or stroke range, meaning the jaws can open and close over a larger distance. This is helpful for holding workpieces that may vary in size or are particularly large.

• Two-Jaw: This chuck has two jaws, which are used to clamp the workpiece. Unlike the more common three-jaw chucks, a two-jaw chuck offers greater flexibility for clamping irregularly shaped or asymmetrical workpieces, as it can grip from two points, rather than three.

• Power Chuck: This means the chuck is operated automatically using a power source (typically pneumatic or hydraulic). It provides the advantage of quicker clamping and unclamping, improving automation and efficiency compared to manual chucks.

In practice, these types of chucks are used in specialized applications where precise clamping of larger or irregularly shaped parts is needed, especially in industries like aerospace, automotive, or heavy machinery.