Scientific Cutting Tools QHC10-1/2 Boring Grooving Bar Holder

Product Description

The SCIENTIFIC CUTTING TOOLS QHC10-1/2 is a boring and grooving bar holder engineered for precision turning and grooving operations on CNC lathes and boring machines. This Series QHC holder features a 0.5 inch inner diameter and a 1 inch outer diameter, with an overall length of 3.25 inches and a head diameter of 1.12 inches. The 1/2-14 NPT through-coolant port delivers cutting fluid directly to the tool tip, supporting chip evacuation and thermal control during deep boring passes. Machinists and CNC operators working in production or job-shop environments rely on this holder for consistent, repeatable tool positioning in tight-tolerance applications.

This bar holder is suited for internal turning, grooving, and threading operations where secure tool clamping and coolant delivery are required. The through-coolant design makes it particularly effective for deep-hole boring where flood coolant cannot reach the cutting zone effectively. Four lock-down screws provide firm, vibration-resistant clamping of the boring bar, supporting stable cuts in ferrous and non-ferrous materials. It is installed by machinists and tool-and-die professionals on CNC turning centers and manual lathes equipped with compatible tooling systems.

Key Features

• 0.5 inch ID and 1 inch OD for precise bar-to-holder fitment
• 3.25 inch overall length with 1.12 inch head diameter
• 1/2-14 NPT through-coolant port for directed cutting fluid delivery
• Four lock-down screws for rigid, vibration-resistant bar retention
• Series QHC design for consistent tooling system compatibility

Compatibility

Designed as an OEM-style replacement and standard fitment holder for CNC turning centers and lathes accepting 0.5 inch bore, 1 inch OD Series QHC boring and grooving bar holders.

Installation Notes

Installation is performed by a qualified machinist or CNC tooling technician. Power down and lock out the machine spindle before inserting or removing the holder from the turret or tool block. Verify that the coolant line connection matches the 1/2-14 NPT port before pressurizing the coolant circuit. Torque all four lock-down screws evenly to secure the boring bar and prevent tool pull-out during cutting operations.