Accupro ACC-62-3/8 Boring Grooving Bar Holder

Product Description

The ACCUPRO ACC-62-3/8 is a boring grooving bar holder designed for precision internal machining operations. It accepts a 3/8 inch inner diameter boring bar and features a 5/8 inch outer diameter body. The overall length (OAL) is 2-3/4 inches, with a 3/4 inch head diameter. Two lock-down screws secure the boring bar firmly in place, reducing deflection and maintaining concentricity during grooving and boring passes. This holder fits the Series DH designation and is used by machinists and toolroom professionals working on CNC lathes and manual turning centers where controlled internal geometry is required.

This bar holder is suited for shop environments performing internal grooving, profiling, or boring on workpieces that require consistent tool positioning. It is a compact unit at 2-3/4 inches OAL, making it practical for applications with limited reach clearance. The Series DH classification places it within a standardized holder family, allowing machinists to match tooling across compatible setups. Typical users include production machinists, toolroom technicians, and job shop operators running repetitive internal turning operations.

Key Features

• 3/8 inch ID accepts standard boring bars for internal grooving and boring operations
• 5/8 inch OD body provides a stable, rigid mounting profile
• Two lock-down screws deliver secure bar retention and minimize tool movement under load
• 3/4 inch head diameter supports precise tool positioning at the cutting zone
• Compact 2-3/4 inch OAL suits setups with limited clearance
• Series DH classification enables straightforward tooling system matching

Compatibility

Designed as an OEM-style replacement and standard fitment holder for boring bars with a 3/8 inch shank diameter used in Series DH tooling systems on CNC and manual turning equipment.

Installation Notes

Installation is performed by machinists or toolroom technicians. Before mounting or adjusting the bar holder, confirm the lathe or turning center is fully powered down and the spindle is locked. Seat the boring bar fully into the holder bore before tightening the lock-down screws evenly to ensure uniform clamping force. Follow the machine tool manufacturer guidelines and applicable shop safety procedures when setting tool offsets and performing test cuts.