As applied to tubular products, the center of the inside diameter is consistent with the center of the outside diameter. Welded, roll-formed tubing is inherently more concentric than seamless tubing because it is fabricated from precision rolled flat stock resulting in a more consistent wall thickness.
The permissible variation in the location of the axis (exact center) of a characteristic to the axis of another characteristic. The axis of the controlled characteristic must remain within a circular zone of a diameter equal to the concentricity limit.
A situation where a smaller circle is exactly in the center of a larger circle when measured in every direction. Valves will operate efficiently and give long service life only if the valve guide is concentric with the valve seat.
The term to describe two circles or cylindrical shapes having a common center and common axis, such as the inside and outside diameters of the flighted surface and bearing surface of a screw. Deviation from concentricity is referred to as "Runout".
The measurement of how well-centered the core is within the cladding. Connector: A mechanical or optical device that provides a demountable connection between two fibers or a fiber and a source or detector.
In HPLC, the degree to which the thru-hole of a part has a common centerline with the part. This is critical when aligning small-bore tubing with a union's thru-hole. If the thru-hole is not concentric, the flow path may be restricted.