Ronddeel

Ronddeel is a Dutch term used in engineering, metalworking, and related fields to denote a piece with a circular cross-section. It describes a cylindrical or near-cylindrical workpiece, whether raw stock or a semi-finished component, intended for further processing or as a finished cylindrical part in an assembly. The concept is general and varies by sector, but typically includes items such as rods, shafts, pins, dowels, and sleeves made from metal, wood, or plastic.

Dimensions are specified by diameter and length. In practice, ronddelen are often referred to by more specific terms depending on the context—rondstaaf for round stock, rondstuk for a round piece. In some catalogs, ronddeel may be used as a broad category name for cylindrical parts.

Manufacturing and finishing: Ronddelen are produced by turning or extrusion for metals, with possible secondary operations such as heat treatment, surface finishing, threading, or coating to meet tolerances and performance requirements.

Applications: They function as structural and moving components in machinery, such as shafts, pins, spacers, or bushings, and are also used in woodworking or plastic fabrication for dowels or decorative cylinders. The exact meaning of ronddeel can depend on regional and industry-specific usage.

See also: Related terms include rondstaaf (round bar) and rondstuk (round piece).