Answering those questions comprehensively is impossible given space constraints, but to get a glimpse into the effect of
concentricity, I devised a series of simple tests.
Summary of selected characteristics Characteristic Number of points Scanning system Mean 15 Scan Flatness 45 Points
Concentricity 15/15 Scan / scan Straightness 5 Points Table 2.
You are correct that neck turning can cure case neck issues that would negatively affect
concentricity. That said, I have only found it necessary to neck turn when I have formed cases for wildcat cartridges, which resulted in oversize neck dimensions.
Concentricity and management of run out is cheap and effective.
Because handgun bullets are relatively short and don't always align perfectly in the bore--and tend not to be manufactured to the same
concentricity standards as rifle bullets--for best accuracy custom pistolsmiths generally recommend barrels with the slowest twist that will stabilize the bullet you are using.
Failure to follow proper tool colleting procedures will result in deformed collets, which reduces tool
concentricity and holding power.
Enka Tecnica is capable of producing extremely critical and delicate nozzle assemblies for the production of high quality hollow fiber membranes with accurate tolerances in terms of wall thickness and
concentricity.
Both the steel adapter and the nylon direct injected bushing provide
concentricity and extended bearing life.
Meister Abrasives' aluminium oxide mounted points are reported to be manufactured on advanced production lines to high standards of
concentricity, dimensional accuracy and stability, in tightly controlled recipes.
They also have exceptional perimeter
concentricity and side runout of +/- .001.
In addition, VisEdge CV300R-EP is the first system to incorporate data from patterned edge die--including partial die--to trace the film edge and its
concentricity with the wafer itself or with neighbouring films in the process.
Linear shafts come in a variety of design options, including radial wrench hole drilled at one or both ends; precision option with perpendicularity tolerance of 0.03 mm; high-precision piloted shafts with pilot
concentricity tolerance of 0.02 mm; both ends stepped and tapped with wrench flat, and both ends tapped and one end stepped with wrench flat.
There are 21 inch (U.S.) size and 27 metric size stainless steel adapters, identified as the S52FCY Series, that are high precision, with tight tolerances on bores, shank, and bore/ shank
concentricity. The female end of the adapter is designed to fit 14 shaft diameters, ranging from 0.12 to 0.4998 in.
