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The ACCUPRO 784764 is an ER25 series collet designed for use in CNC machining centers, milling machines, and other rotating spindle applications that accept the ER25 collet standard. With a collet size of 0.346 inches and a minimum collet capacity of 0.313 inches, this collet provides a reliable clamping range suited to a variety of tooling diameters. The overall length is 1.378 inches. It is installed and serviced by machinists and CNC technicians working in precision machining environments.
This collet is suited for shops and production environments running ER25-compatible toolholders. The ER25 standard is widely used in both light-duty and moderate-production milling, drilling, and tapping operations. The 0.346-inch collet size accommodates common shank diameters in that range, making it a practical stocking item for tool cribs and machining cells handling varied tooling setups.
Designed for use with ER25-standard collet chucks and toolholders. Specific machine compatibility depends on the toolholder in use; verify that the host chuck or holder is rated for the ER25 collet series before installation.
Installation is performed by qualified machinists or CNC technicians. Before inserting or removing the collet, ensure the spindle is fully stopped and the machine is in a safe, powered-down state. Use the appropriate ER25 collet nut and spanner wrench to seat and torque the collet properly within the toolholder. Inspect the collet bore and seating surfaces for chips or damage before each use to maintain runout accuracy.
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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