Iscar 2893903 Boring Grooving Bar Holder Through Coolant

Product Description

The ISCAR 2893903 is a boring and grooving bar holder designed for precision internal turning and grooving operations on CNC lathes and turning centers. This toolholder features a 0.236-inch bore ID and a 1-inch OD shank, with an overall length of 3.543 inches and a head diameter of 0.71 inches. A through-coolant design delivers cutting fluid directly to the cutting zone, helping to manage heat and evacuate chips during deep-bore or tight-clearance operations. Part of the ISCAR PICCO series, this holder accepts compatible PICCO boring and grooving bars for modular tooling setups. It is secured with four lock-down screws for rigid, repeatable clamping.

This holder is suited for small-bore internal grooving and boring applications where tight radial clearances demand compact tooling. The PICCO series is commonly used in swiss-type, gang-tool, and conventional CNC turning setups where minimal bore diameter and short overhangs are critical. It is appropriate for production turning environments machining small-diameter bores in steel, stainless, aluminum, and similar workpiece materials. Machinists and toolroom technicians working with modular PICCO-series bars will find this holder a direct fit in their existing PICCO tooling systems.

Key Features

• Through-coolant design delivers fluid directly to the cutting zone for heat control and chip evacuation
• 0.236-inch bore ID accommodates PICCO-series small-diameter boring and grooving bars
• 1-inch OD shank fits standard 1-inch bore toolholding blocks and turret stations
• 3.543-inch overall length suits typical small-bore turning reach requirements
• Four lock-down screws provide rigid clamping and repeatable bar positioning
• Part of the ISCAR PICCO modular tooling series for flexible small-bore setups

Compatibility

Designed for use with ISCAR PICCO-series boring and grooving bars. Compatible with toolholding setups that accept a 1-inch OD shank. Specific machine and turret compatibility should be verified against the PICCO series tooling documentation prior to ordering.

Installation Notes

Installation should be performed by a qualified machinist or toolroom technician with the machine powered down and in an e-stop or lockout-tagout state per applicable shop safety procedures. Ensure the shank is clean and the bore in the toolblock is free of chips or burrs before inserting the holder. Tighten the four lock-down screws evenly and in sequence to the toolholder block specification. Verify through-coolant port alignment with the machine coolant supply before running.