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The PARLEC 100RPG-0312 is a coolant single angle collet designed for use with TG/PG 100 series toolholding systems. It accepts a 5/16-inch (0.3125-inch) bore and delivers a total indicator runout (TIR) of 0.0005 inches, supporting tight tolerances on precision machining operations. The collet has an overall length of 2.375 inches and a maximum body diameter of 1.379 inches. It is rated for coolant delivery at up to 600 psi, making it suitable for through-spindle coolant applications. Machinists and toolroom technicians install this collet into compatible TG/PG 100 chucks to secure round-shank cutting tools while directing coolant directly to the cutting zone.
This collet is used in CNC machining centers, mills, and production tooling setups where through-coolant capability is required. The TG/PG 100 series is a widely used precision collet system in both job shop and production environments. The 5/16-inch bore size makes it appropriate for end mills, drills, and reamers with matching shank diameters. It fits applications where coolant-through toolholding is specified to extend tool life and manage heat at the cutting edge.
Designed for use with TG/PG 100 series collet chucks that support coolant-through toolholding. Accepts 5/16-inch round-shank cutting tools.
Installation should be performed by a qualified machinist or toolroom technician familiar with TG/PG collet systems. Ensure the spindle is fully stopped and the machine is powered down before changing collets. Clean the chuck bore and collet surfaces before seating to prevent runout from debris. Torque the chuck nut according to the chuck manufacturer's specifications - do not use impact tools on precision toolholding components.
We pulled together the parts most installs need for this unit, plus a few add-ons worth a look. Check what you need — nothing here blocks checkout.
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