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The CENTAUR RDF - 186 is a Series 100 AF collet designed for precision workholding in machining operations. It accepts stock ranging from 9/16 inch minimum to 37/64 inch (0.5781 inch) maximum collet capacity, making it well-suited for close-tolerance work near the upper end of that range. The collet measures 1.45 inches in overall diameter and 2.5 inches in overall length. Machinists and tool room technicians install this collet in compatible Series 100 spindles and collet chucks to secure round stock, bar stock, or tooling shanks during turning, milling, or grinding operations.
This collet fits production and job-shop environments where consistent, repeatable workholding is required. The Series 100 AF designation indicates compatibility with spindles and collet closers built to that series standard. It is appropriate for both manual and CNC machine tool setups where accurate stock gripping in the 9/16 to 37/64 inch range is needed. Metalworking shops running bar-feed lathes or precision grinding machines are the primary users of this type of collet.
Designed for use with Series 100 AF collet chucks and spindle closers that accept collets of 1.45 inch outer diameter.
Collet installation should be performed by a qualified machinist with the machine powered down and the spindle fully stopped. Ensure the collet bore and collet closer are clean and free of chips or debris before seating the collet. Do not force the collet into the closer; it should seat smoothly by hand before the closer is tightened. Follow the machine tool manufacturer guidelines for proper closure torque and collet engagement depth.
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