Accupro 588356 ER25 Collet 15 Mm

Product Description

The ACCUPRO 588356 is an ER25 series collet designed to hold 15 mm diameter tooling in ER25-compatible tool holders and chucks. Collets in the ER series function by compressing radially when a clamping nut is tightened, securing cutting tools, drills, reamers, and other round-shank tooling with consistent concentricity. The ER25 is one of the most widely used collet standards in CNC machining, manual milling, and drilling operations. This collet is suited for machinists, tool-and-die technicians, and CNC operators working in production or job-shop environments who require reliable, repeatable tool holding at the 15 mm shank size.

This collet is appropriate for use in milling machines, machining centers, drill presses, and lathes equipped with ER25 collet chucks or tool holders. The ER25 collet series accommodates a range of shank diameters, and this 15 mm unit fills the upper end of that range. It is a standard fit for both horizontal and vertical spindle configurations where ER25 holders are in use. Typical applications include precision drilling, end milling, reaming, and tapping operations in both light and moderate-duty cutting conditions.

Key Features

• ER25 collet series for compatibility with ER25 chucks and tool holders
• 15 mm collet size for secure clamping of 15 mm shank tooling
• Radial compression design delivers consistent tool concentricity
• Suitable for CNC machining centers, manual mills, and drill presses
• Lightweight at 0.7 pounds for easy handling and quick changeover

Compatibility

Designed as a direct-fit replacement or addition for any ER25-standard collet chuck or tool holder accepting 15 mm collets.

Installation Notes

ER collets are installed by a licensed machinist or qualified CNC operator. Before installing or removing a collet, ensure the machine spindle is fully stopped and the power is locked out per standard lockout/tagout procedures. Seat the collet into the clamping nut before threading onto the holder, and tighten with an appropriate ER25 spanner wrench to the tool holder manufacturer's specified procedure. Do not use impact tools to tighten or loosen collet nuts.