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The CENTAUR RDF - 140 is a Series 75 AF collet designed to hold workpieces ranging from 49/64 inch to 25/32 inch in diameter. With an overall diameter of 1.13 inches and an overall length of 2.02 inches, this collet is built for precision workholding applications in machining environments. It is sized and configured for use in lathes, milling machines, and similar machine tool setups where repeatable clamping force and accurate concentricity are required. Machinists and toolroom professionals select this collet when the job demands a reliable, close-tolerance grip within its specified capacity range.
The RDF - 140 fits Series 75 AF collet systems and is suited for production and jobshop machining operations where consistent part-holding is critical. Its capacity range covers 49/64 inch to 25/32 inch, making it appropriate for round bar stock, shafts, and similar cylindrical workpieces that fall within that tolerance window. This collet is typically installed and serviced by machinists, tool-and-die makers, and CNC setup technicians working with compatible collet chucks or collet-style spindle noses.
Designed as an OEM-style replacement or direct-fit collet for Series 75 AF collet chucks and spindle systems that accept workpieces in the 49/64 inch to 25/32 inch diameter range.
Installation is performed by machinists or qualified toolroom personnel. Before inserting or removing a collet, power down the machine, engage the spindle lock, and confirm the chuck body is fully de-energized and at rest. Inspect the collet bore and mating taper surfaces for chips or wear before seating. Do not exceed the rated capacity range, as overloading a collet beyond its maximum bore can damage both the collet and the workpiece.
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