Micro 100 TH-206 Boring Grooving Bar Holder

Product Description

The MICRO 100 TH-206 is a boring grooving bar holder designed for use with compatible boring and grooving bars in precision machining operations. Part of the TH series, this holder features a 0.25 inch inside diameter, a 0.75 inch outside diameter, and an overall length of 2.75 inches. The head diameter measures 0.875 inches. Weighing 0.31 pounds, it is a compact, solid holder suited for machinists and toolroom professionals running internal grooving or boring operations on lathes and turning centers. No coolant-through capability is included in this configuration.

The TH-206 is intended for shop floor and toolroom use where a reliable, rigid bar holder is needed for internal grooving or boring applications. Its compact overall length of 2.75 inches makes it well suited for setups with limited clearance. This holder is typically installed by machinists and tool setters working on CNC or manual lathes performing precision internal operations on workpieces requiring controlled bore geometry.

Key Features

• 0.25 inch inside diameter for secure bar retention
• 0.75 inch outside diameter for standard toolholder fitment
• 0.875 inch head diameter for positive registration
• Overall length of 2.75 inches for compact setups
• Part of the MICRO 100 TH series for consistent system compatibility
• No coolant-through design - straightforward, low-maintenance configuration

Compatibility

Designed as an OEM-style holder for use with MICRO 100 TH series boring and grooving bars requiring a 0.25 inch shank bore.

Installation Notes

Installation is performed by qualified machinists or tool setters. Power down and lock out the machine spindle before installing or removing any toolholder. Ensure the bar shank is clean and free of burrs before seating in the holder. Follow the machine tool manufacturer torque guidelines for clamping screws - do not overtighten, as this can distort the bore or damage the bar shank.