Parlec ER11-0187 ER11 Collet 0.187 Inch

Product Description

The PARLEC ER11-0187 is an ER11 series collet designed for precision workholding in CNC machining and milling operations. With a collet size of 0.187 inches and a minimum collet capacity of 0.148 inches, this collet clamps tool shanks securely within its clamping range. The overall length is 0.708 inches and the overall diameter is 0.452 inches. Machinists and tool room technicians install this collet into compatible ER11 collet chucks to hold end mills, drills, reamers, and other round-shank tooling during cutting operations. Its compact ER11 form factor suits smaller spindle applications where controlled runout and consistent clamping force are required.

This collet is used in ER11 collet chucks found on CNC machining centers, milling machines, lathes with live tooling, and high-speed spindle units. It is suited for light-duty precision machining in both production and tool room environments. The 0.187-inch nominal capacity accommodates standard fractional shank tooling at that diameter. Typical applications include drilling, reaming, and light milling where a compact collet chuck system is specified.

Key Features

• ER11 collet series for use in ER11-compatible collet chucks
• 0.187-inch collet size with a minimum collet capacity of 0.148 inches
• Overall length of 0.708 inches for compact spindle installations
• Overall diameter of 0.452 inches
• Lightweight construction at 0.03 pounds

Compatibility

Designed as an OEM-style replacement or direct-fit collet for ER11 series collet chucks and compatible toolholding systems.

Installation Notes

ER11 collets are installed and removed by a machinist or tool room technician using the appropriate ER11 collet nut and spanner wrench. Always ensure the spindle or collet chuck is fully powered down and at rest before changing collets. Inspect the collet bore and chuck taper for debris or damage before seating the collet. Do not exceed the collet clamping range when inserting tool shanks.