Accupro 784954 ER25 Collet 0.594 Inch

Product Description

The ACCUPRO 784954 is an ER25 series collet designed for use in CNC machining centers, milling machines, and other rotating spindle equipment that accept the ER25 collet standard. With a nominal collet size of 0.594 inches and a minimum collet capacity of 0.578 inches, this collet provides a secure clamping range suited to tooling at or near the 0.594-inch nominal diameter. Machinists and tool room technicians rely on ER-series collets for consistent tool runout control and repeatable clamping force across production and maintenance applications.

This collet is intended for use in ER25-compatible collet chucks and tool holders found on vertical and horizontal machining centers, drill-tap machines, and manual knee mills. It is suitable for holding end mills, drills, reamers, and other round-shank tooling within its clamping range. The ER25 standard is widely adopted in both production shop and toolroom environments, making this collet a common replacement or additional-capacity item for shops running ER25 tooling systems.

Key Features

• ER25 collet series for compatibility with standard ER25 chucks and tool holders
• Nominal collet size of 0.594 inches with a minimum capacity of 0.578 inches
• Compact dimensions of 1.9 inches height and 1.2 inches width and length
• Lightweight at 0.1 pounds, minimizing added mass at the spindle
• Single-piece package quantity for targeted replacement or capacity expansion

Compatibility

Designed for use with ER25-standard collet chucks and tool holders. Specific machine or chuck model compatibility was not provided in the product data.

Installation Notes

ER collets are installed and removed by a qualified machinist or toolroom technician using the appropriate ER25 collet nut and spanner wrench. The spindle must be fully stopped and the machine powered down before changing tooling. Do not exceed the collet clamping range when seating tooling, as under- or over-size shanks can cause runout and unsafe ejection. Follow the machine tool manufacturer guidelines for proper collet nut torque and chuck seating procedures.