Parlec 5UMER11-0218 ER11 Collet 0.2188 Inch

Product Description

The PARLEC 5UMER11-0218 is an ER11 collet designed for precision tool holding in CNC machining and milling applications. It accepts a 0.2188 inch bore diameter and delivers a total indicator runout (TIR) of 0.0002 inches, making it suitable for operations where tight concentricity tolerances are required. The overall length (OAL) is 0.708 inches with an overall diameter of 0.452 inches. Machinists and CNC operators install this collet into compatible ER11 collet chucks or toolholders to securely grip cutting tools, drill bits, or other round-shank tooling during machining operations.

This collet fits into standard ER11 collet chuck systems used in CNC machining centers, milling machines, and high-speed spindle applications. The ER11 series is widely used in light-duty to medium-duty machining where a compact collet system is needed. The 0.2188 inch bore targets common fractional shank sizes used in production and toolroom environments. It is sold individually and is appropriate for both shop floor and maintenance toolroom use.

Key Features

• 0.2188 inch bore diameter for precise shank engagement
• 0.0002 inch TIR for high concentricity in precision machining
• 0.708 inch overall length in a compact ER11 form factor
• 0.452 inch overall diameter fits standard ER11 chuck systems
• Sold individually with a minimum order quantity of 1

Compatibility

Designed as a direct-fit replacement or production collet for standard ER11 collet chuck systems used in CNC milling, drilling, and high-speed spindle toolholding applications.

Installation Notes

ER collets are installed and removed by a machinist or CNC setup technician using the appropriate ER11 collet nut and spanner wrench. Always ensure the spindle or toolholder is fully stopped and the machine is powered down before changing collets. Inspect the collet taper and chuck bore for chips or debris before seating the collet, as contamination directly affects runout. Do not exceed the collet bore range when selecting shank diameter.