Rego-fix 1211.04000 ER11 Collet 0.1575 in 4mm

Product Description

The REGO-FIX 1211.04000 is an ER11 precision collet designed for use in CNC machining centers, milling machines, and high-speed spindle applications. It holds tool shanks at a collet size of 4.00 mm (0.1575 inches) and delivers a total indicator runout (TIR) of 0.0002 inches, making it suitable for applications that demand close tolerances and consistent tool concentricity. The 18 mm overall length and 11.5 mm overall diameter fit the compact ER11 collet nut and chuck system. Machinists and tool crib technicians working with precision toolholding systems install this collet as part of a standard ER-style clamping setup.

This collet is used in light-duty to medium-duty machining operations where a small-diameter tool shank must be held securely at high RPM. Typical applications include drilling, reaming, tapping, and end milling with shanks at or near 4.00 mm. The ER11 form factor is common in benchtop CNC routers, Swiss-type lathes, and compact vertical machining centers where spindle envelope is limited. It is sold individually with a minimum order quantity of one.

Key Features

• ER11 collet type with 4.00 mm (0.1575 inches) bore capacity
• Low TIR of 0.0002 inches supports precise tool concentricity
• 18 mm overall length fits standard ER11 chucks and collet nuts
• 11.5 mm overall diameter conforms to ER11 collet geometry
• Sold as a single unit with no minimum order beyond one piece

Compatibility

Designed as an OEM-style replacement or direct-fit collet for ER11 toolholding chucks and collet nuts that accept the standard ER11 collet form factor.

Installation Notes

Installation is performed by qualified machinists or toolroom technicians. The spindle or toolholder must be fully de-energized and brought to a complete stop before changing collets. Seat the collet fully into the collet nut before threading the nut onto the chuck body to avoid cross-threading or collet damage. Do not exceed the chuck manufacturer's recommended clamping torque range for ER11 collet nuts.