Scientific Cutting Tools QHC62-1/8 Boring Grooving Bar Holder

Product Description

The SCIENTIFIC CUTTING TOOLS QHC62-1/8 is a boring grooving bar holder designed to secure grooving bars in precision machining operations. Part of the Series QHC line, it accepts a 1/8-inch inner diameter bore and measures 5/8 inch in outer diameter. The overall length is 3.25 inches with a 3/4-inch head diameter. This holder is equipped with through-coolant capability, directing cutting fluid directly to the cutting zone to manage heat and chip evacuation. It is installed and serviced by machinists and toolroom technicians working with CNC lathes and boring applications.

This bar holder is suited for internal grooving and boring operations on CNC turning centers and manual lathes where precise tool retention and coolant delivery are required. The compact outer diameter and through-coolant port make it practical for tight-bore applications where heat buildup and chip clearance are critical concerns. The four lock-down screws provide secure clamping of the grooving bar insert during high-precision cuts.

Key Features

• 1/8-inch ID bore accommodates standard small-diameter grooving bars
• 5/8-inch OD fits into compatible tool block or turret stations
• 3.25-inch overall length with 3/4-inch head diameter
• Through-coolant design channels fluid directly to the cutting edge
• Four lock-down screws for positive, secure bar retention
• Series QHC design for consistent fitment within the QHC tooling system

Compatibility

Designed as an OEM-style replacement and standard tooling component within the SCIENTIFIC CUTTING TOOLS Series QHC boring and grooving bar holder system.

Installation Notes

Installation is performed by qualified machinists or toolroom technicians. Before mounting or removing the bar holder, ensure the machine is powered down and the turret is fully indexed to a safe position. Use the appropriate hex key to tighten the four lock-down screws evenly to secure the grooving bar without inducing deflection. Verify through-coolant passages are clear and the coolant supply is connected and sealed before resuming machine operation.