Accupro ACC-75-3/16 Boring Grooving Bar Holder

Product Description

The ACCUPRO ACC-75-3/16 is a boring and grooving bar holder designed for use with boring bars in precision machining applications. It accepts boring bars with a 3/16 inch inner diameter and features a 3/4 inch outer diameter body. The overall assembly length is 2-3/4 inches, and the head diameter measures 0.88 inches. Retention is handled by two lock-down screws, providing secure clamping on the bar during cutting operations. This holder belongs to the Series DH product family and is intended for use by machinists and toolroom professionals working on lathes and boring setups.

This bar holder is suited for internal diameter boring and grooving operations in both production and toolroom environments. It is used when a rigid, compact holder is needed to position a small-diameter boring bar accurately within a turret or tool post. The small ID makes it appropriate for fine-bore work where precision and minimal runout are critical. Machinists working with CNC lathes or manual engine lathes in job shop and manufacturing settings will find this holder compatible with standard boring bar configurations in the 3/16 inch shank range.

Key Features

• 3/16 inch ID accommodates small-shank boring and grooving bars
• 3/4 inch OD body fits standard tool post and turret bores
• 2-3/4 inch overall length for compact tooling setups
• 0.88 inch head diameter for positive bar seating
• Two lock-down screws for secure, repeatable clamping
• Series DH designation for organized tooling system integration

Compatibility

Designed as an OEM-style replacement and standard tooling component for use with 3/16 inch shank boring and grooving bars in lathe and boring machine applications.

Installation Notes

Installation is performed by qualified machinists or toolroom personnel. Secure the boring bar within the holder bore before tightening the lock-down screws evenly to avoid bar deflection. Ensure the machine spindle is fully stopped and the tool turret is depowered before changing or adjusting tooling. Verify bar overhang is minimized to reduce chatter during cutting operations.