Value Collection 231-2114 R8 Collet Set 14 Piece

Product Description

The VALUE COLLECTION 231-2114 is a 14-piece R8 collet set designed for use in milling machines equipped with an R8 spindle taper. The set covers a capacity range from 1/16 inch to 7/8 inch in 1/16-inch increments, providing a complete selection for common tooling diameters. Each collet is manufactured to a Total Indicator Runout (TIR) of 0.0007 inch, supporting accurate, repeatable tool holding. The full set ships with a storage rack that keeps collets organized and accessible at the machine. Machinists, toolroom technicians, and CNC mill operators are the primary installers and users of this set.

This collet set is suited for vertical milling machines, knee mills, and manual or CNC machining centers that accept the R8 spindle interface. The 14 individual sizes span 1/16, 1/8, 3/16, 1/4, 5/16, 3/8, 7/16, 1/2, 9/16, 5/8, 11/16, 3/4, 13/16, and 7/8 inch, making it practical for shops that run a variety of end mills, drill chucks, and arbors. It is commonly used in job shops, maintenance facilities, and apprentice training environments where a full-range collet selection is needed without sourcing individual sizes.

Key Features

• R8 collet system for direct compatibility with R8-taper milling machine spindles
• 14 collets covering 1/16 inch through 7/8 inch in 1/16-inch steps
• TIR of 0.0007 inch for consistent tool concentricity
• Includes a storage rack to house all 14 collets in one organized unit
• Complete set eliminates the need to source individual collet sizes separately

Compatibility

Designed for milling machines with an R8 spindle taper, the most common spindle interface found on Bridgeport-style vertical knee mills and similar manual and CNC milling machines.

Installation Notes

R8 collets are installed and removed by a licensed machinist or qualified mill operator. Before changing collets, power down the machine and engage the spindle brake or lock to prevent rotation. Use the appropriate drawbar wrench to tighten or release the drawbar to the machine manufacturer's specified procedure. Inspect each collet bore and the spindle taper for chips or contamination before seating a collet, as debris will increase runout and accelerate wear.