Accupro 587656 ER11 Collet 0.098 in 2.50mm

Product Description

The ACCUPRO 587656 is an ER11 series collet designed for use in CNC machining centers, milling machines, and high-speed spindle applications. It holds a nominal collet size of 2.50mm (0.098 inches) with a minimum collet capacity of 2.0mm (0.078 inches), allowing it to grip a range of tooling within that span. The total indicator runout (TIR) is rated at 0.02mm, supporting precision cutting operations where concentricity is critical. Machinists and tool-and-die professionals install this collet as part of an ER11 collet chuck system to secure end mills, drills, reamers, and similar rotary cutting tools.

This collet is suited for light-duty and high-speed spindle work in both production and prototype environments. The ER11 series is one of the most widely used collet standards in small-footprint CNC routers, engraving machines, and precision milling spindles. The 2.50mm size targets metric tooling commonly found in PCB routing, micro-milling, and fine detail machining applications where smaller tool diameters are standard.

Key Features

• ER11 collet series — compatible with ER11 collet chuck holders
• Nominal collet size of 2.50mm (0.098 inches)
• Minimum collet capacity of 2.0mm (0.078 inches) for gripping range flexibility
• TIR of 0.02mm for precision concentricity in high-speed applications
• Single-piece package quantity suitable for individual replacement or stocking

Compatibility

Designed for use with ER11 collet chuck holders. Verify spindle and chuck specifications match the ER11 collet series standard before installation.

Installation Notes

Installation is performed by qualified machinists or toolroom technicians familiar with collet chuck systems. Always power down and lock out the spindle before removing or seating a collet. Ensure the collet bore and chuck taper are clean and free of debris before insertion, as contamination directly affects TIR and tool life. Follow machine manufacturer torque specifications for the collet nut — do not over-tighten using improvised methods.