Parlec ERS25-0157 ER25 Collet 4mm Bore

Product Description

The PARLEC ERS25-0157 is an ER25 series collet designed for precision workholding in CNC machining centers, milling machines, and drilling applications. With a 4 mm bore diameter and an overall length of 1.338 inches, this collet seats into any standard ER25 collet chuck to grip cutting tools, drill bits, and round-shank tooling securely. Rated to 1800 psi clamping pressure, it delivers the holding force required for consistent, repeatable toolholding in production environments. Machinist and CNC technicians are the primary installers for this component.

This collet is suited for use in machine shops, job shops, and manufacturing facilities running ER25-compatible toolholding systems. It accommodates 4 mm shank tooling and is a standard fit across a broad range of spindle configurations that accept the ER25 collet standard. Typical applications include light milling, drilling, reaming, and tapping operations where precise tool concentricity is required.

Key Features

• ER25 series collet with 4 mm bore for precise tool gripping
• Overall length of 1.338 inches for standard ER25 chuck compatibility
• 1800 psi rated clamping pressure for secure toolholding
• Compact design at 0.18 pounds for easy handling and tool change
• Compatible with any standard ER25 collet nut and chuck body

Compatibility

Designed as an OEM-style replacement or direct-fit collet for use with standard ER25 collet chucks and compatible toolholding systems.

Installation Notes

Installation is performed by a machinist or CNC setup technician. Ensure the spindle is fully stopped and the machine is locked out before changing collets. Clean the collet taper and chuck bore before seating to prevent runout. Use the appropriate ER25 collet nut and torque wrench per the chuck manufacturer's guidelines to achieve proper clamping force.