Accupro 588484 ER20 Collet 12 Mm

Product Description

The ACCUPRO 588484 is an ER20 series collet sized at 12 mm, designed for use in CNC machining centers, manual milling machines, and high-speed spindle applications. Collets in the ER20 series grip cutting tools such as end mills, drills, and reamers by compressing radially as the nut is tightened, providing concentric tool holding with minimal runout. This collet fits any ER20-compatible collet chuck and is a standard component in machine shops running precision cutting operations. It weighs 0.5 pounds and is sold as a single unit.

ER20 collets are widely used in both production and job-shop environments across CNC milling, drilling, and light turning operations. The 12 mm bore size accommodates a broad range of tool shanks common in metric tooling setups. Machinists, tool-and-die workers, and CNC operators typically select this collet for general-purpose metal cutting where secure, repeatable tool holding is required. It is suited for residential machine shop use as well as light industrial production environments.

Key Features

• ER20 collet series for broad compatibility with ER20-standard chucks
• 12 mm collet bore size accommodates metric tool shanks
• Radial compression design delivers concentric clamping with low runout
• Single-piece construction for straightforward tool changes
• Lightweight at 0.5 pounds for easy handling during tooling setup

Compatibility

Designed as a direct-fit collet for ER20-standard collet chucks used in CNC machining centers and manual milling machines.

Installation Notes

Installation is performed by machinists or CNC operators. Before installing or changing collets, power down and lock out the machine spindle per standard lockout/tagout procedures. Seat the collet fully into the collet nut before threading onto the chuck body, and torque the nut using the appropriate ER20 spanner wrench. Inspect the collet bore and mating chuck taper for chips or damage before each use to maintain clamping accuracy.