Iscar 2500426 Grooving Cutoff Toolholder 1 in Shank

Product Description

The ISCAR 2500426 is a right-hand indexable grooving and cut-off toolholder built on the Heliface platform. It accepts clamp-style insert retention and is designed for use with DGN, GRIP, and HFPR insert families, giving machinists and tool-room technicians a broad range of grooving geometries from a single body. The shank measures 1 inch square in both height and width, with an overall length of 4.88 inches. Through-coolant capability channels fluid directly to the cutting zone, supporting extended insert life and chip evacuation in interrupted or deep-groove operations. The holder conforms to ISO 13399 tooling data standards.

This toolholder is suited for turning center and CNC lathe applications where external grooving, plunge cutting, and cut-off operations are required. The right-hand orientation positions the cutting edge for standard front-tool-post configurations on most horizontal lathes. The Heliface series is used in production and job-shop environments where quick insert indexing and consistent edge positioning reduce changeover time. Compatible inserts span a wide width range, covering DGN, GRIP, and HFPR geometries for both profiling and straight grooving work.

Key Features

• Right-hand HAP-style toolholder configured for external grooving and cut-off operations
• 1 inch x 1 inch square shank fits standard tool-post and turret pockets
• Overall length of 4.88 inches provides reach for typical OD grooving setups
• Through-coolant design delivers fluid directly to the insert tip for improved chip control and thermal management
• Clamp insert retention method ensures repeatable edge location across indexing cycles
• Conforms to ISO 13399 cutting tool data representation standards

Compatibility

Compatible inserts include DGN 4003C, DGN 4803C, DGN 5003C, GRIP 4002Y, GRIP 4004Y, GRIP 4020Y, GRIP 476-080Y, GRIP 476-238Y, GRIP 5005Y, GRIP 5008Y, GRIP 5025Y, GRIP 6030Y, HFPR 3003, HFPR 3015, HFPR 4004, HFPR 4020, HFPR 5004, HFPR 5025, HFPR 6004, and HFPR 6030.

Installation Notes

Installation is performed by a machinist or toolroom technician on a CNC lathe or manual turning center. Power down and lock out the spindle before mounting or removing the toolholder from the turret or tool post. Ensure the shank seating surfaces and coolant port are clean and free of chips before installation. Verify through-coolant line alignment and pressure at the machine connection before running at production feed rates.