Value Collection 204-2516 ER25 Collet 0.25 Inch

Product Description

The VALUE COLLECTION 204-2516 is an ER25 series collet designed to hold 0.25 inch (1/4 inch) round shank tooling in ER25-compatible chucks and tool holders. It delivers a total indicator runout (TIR) of 0.0005 inches, making it suitable for precision milling, drilling, and tapping operations where consistent tool concentricity is required. Weighing 0.11 pounds, this collet is a compact, single-piece clamping element used in CNC machining centers, manual mills, and dedicated tapping heads. Machinists and tool room technicians rely on low-TIR collets like this one to maintain dimensional accuracy and extend cutting tool life across production and job-shop environments.

This ER25 collet is used in machining applications where a 0.25 inch tool shank must be gripped securely with minimal runout. Typical installations include CNC vertical machining centers, horizontal mills, and bench-top drilling and tapping machines equipped with ER25 collet chucks or collet blocks. It is suited to both light-duty finishing passes and moderate material-removal operations where tool rigidity and repeatable seating are priorities. A single collet is supplied per package.

Key Features

• ER25 collet series fits standard ER25 collet chucks and tool holders
• 0.25 inch (1/4 inch) bore accepts common fractional-inch round shank tooling
• 0.0005 inch TIR supports precision machining with minimal tool runout
• Lightweight at 0.11 pounds for easy single-hand handling and chuck loading
• Single-piece quantity packaged individually for direct replacement use

Compatibility

Designed as a direct-fit replacement collet for any ER25-standard collet chuck or tool holder accepting a 0.25 inch bore collet.

Installation Notes

Installation is performed by a machinist or tool room technician. Before swapping collets, power down and lock out the machine spindle per applicable OSHA lockout/tagout procedures. Seat the collet fully into the ER25 nut before threading onto the chuck body, and verify runout with a dial indicator after clamping to confirm TIR is within specification. Do not exceed the torque range stamped or published for the specific ER25 chuck body in use.