Micro 100 QTS-187-500 Boring Grooving Bar Holder

Product Description

The MICRO 100 QTS-187-500 is a quick change boring and grooving bar holder designed for precision machining operations on CNC lathes and turning centers. This holder features a 0.1875 inch inside diameter and a 0.5000 inch outside diameter with an overall length of 2.8 inches. It supports through-coolant delivery, directing cutting fluid directly to the tool tip for improved chip evacuation and thermal control during internal boring and grooving work. Part of the QTS series, it is installed and used by machinists and CNC operators working in production or job-shop environments.

This holder is suited for internal boring and grooving applications where quick change tooling systems are in use. The QTS series is built for setups that require repeatable, fast tool changes without sacrificing rigidity or positioning accuracy. Through-coolant capability makes it a practical choice for deep-bore work or materials that generate significant heat during cutting. It is appropriate for both production runs and prototype machining where consistent tool positioning is critical.

Key Features

• 0.1875 inch inside diameter for precise bar retention
• 0.5000 inch outside diameter for standard quick change toolpost compatibility
• 2.8 inch overall length for compact tool station clearance
• Through-coolant support for improved chip evacuation and tool life
• QTS series design for fast, repeatable tool changes

Compatibility

Designed for use with MICRO 100 QTS series quick change tooling systems accepting a 0.5000 inch outside diameter boring and grooving bar holder.

Installation Notes

Installation is performed by machinists or CNC setup technicians. The machine spindle and turret must be fully powered down and locked out before mounting or removing any toolholders. Ensure the coolant supply line is properly connected and free of obstruction before activating through-coolant flow. Follow the machine tool manufacturer guidelines for torque and clamping procedures specific to the quick change system in use.