Rego-fix 1111.04000 ER11 Collet 4 Mm Bore

Product Description

The REGO-FIX 1111.04000 is an ER11 precision collet designed to hold cutting tools and workpieces with a 4 mm bore diameter. It delivers a total indicator runout (TIR) of 0.000240 inches, making it suitable for high-precision milling, drilling, and tapping operations. With an overall length of 18 mm and an overall diameter of 11.5 mm, this collet fits standard ER11 collet chucks used in CNC machining centers, manual milling machines, and high-speed spindle applications. Installation is performed by machinists and toolroom technicians.

This collet is used in light-duty to medium-duty CNC and manual machining setups where a compact ER11 chuck is already in use. The 4 mm bore size accommodates a range of small-diameter end mills, drills, reamers, and taps. It is a common choice in precision production environments, toolrooms, and job shops that require repeatable tool holding with minimal runout.

Key Features

• 4 mm bore diameter for small-diameter tool holding
• TIR of 0.000240 inches for high-precision applications
• 18 mm overall length in a compact ER11 form factor
• 11.5 mm overall diameter compatible with standard ER11 chuck bodies
• ER-style spring collet design provides consistent clamping force

Compatibility

Designed for use with standard ER11 collet chucks. Confirm chuck manufacturer specifications before installation to ensure proper seating and clamping range.

Installation Notes

ER collets are installed by machinists following standard toolroom practices. Always power down and lock out the spindle before changing collets. Insert the collet into the ER11 nut before threading the nut onto the chuck body, and tighten using the appropriate ER spanner wrenches to the chuck manufacturer's recommended procedure. Inspect the collet bore and chuck taper for chips or debris before each use to maintain TIR performance.