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A collet block is a precision workholding device designed to securely grip and position cylindrical or hexagonal workpieces. Unlike traditional vises that clamp with flat jaws, collet blocks utilize a collet a slotted sleeve with a tapered outer surface that collapses uniformly around the workpiece when tightened. This provides a concentric and consistent grip, minimizing the risk of distortion or damage, particularly when working with delicate or thin-walled materials.

• This collet block provides easy indexing for 3 and 6 divisions.
• The collet block is 1.75″ across the flats and the body is 2.8″ long.
• ER-32 collets have a range of 1/16″ to 13/16″ (2 mm to 20 mm)

The collet block itself is typically a hardened steel block, often square or hexagonal, with a precision-machined bore to accommodate the collet. The combination of the precision collet and the stable block creates a rigid and accurate platform for a wide range of machining operations.