Iscar 2500453 Grooving Toolholder External Left Hand

Product Description

The ISCAR 2500453 is an indexable grooving toolholder designed for external grooving operations on CNC lathes and turning centers. Part of the Heli-Grip series, this left-hand toolholder accepts DG.-4 and GRIP-4 style inserts secured by a clamp-style holding method. The shank measures 1 inch x 1 inch with a shank length of 4.35 inches and an overall length of 6 inches. The head length is 1.65 inches, and the back-of-bar to cutting edge distance is 0.94 inches. Rated for a maximum workpiece diameter of 1.97 inches, this toolholder weighs 1.76 pounds and is suited for universal workpiece materials across multiple ISO material codes.

This toolholder is intended for use in production turning environments where consistent groove geometry is required. The HELIL 25.4-4T25 designation identifies it as a left-hand external grooving holder in the Heli-Grip series. The groove width range of 0.157 inches to 0.187 inches suits standard grooving insert geometries. It is compatible with universal workpiece materials including ISO material codes H, K, M, N, P, and S, making it applicable across steel, stainless, cast iron, non-ferrous, and high-temperature alloy turning applications. Machinists and CNC operators in job shops and production facilities are the primary users.

Key Features

• Left-hand external grooving orientation for HELIL-style tooling setups
• Accepts DG.-4 and GRIP-4 insert styles via clamp holding method
• Groove width range: 0.157 inches to 0.187 inches
• Maximum workpiece diameter of 1.97 inches
• 1 inch x 1 inch shank with 4.35-inch shank length and 6-inch overall length
• Compatible with universal workpiece materials across ISO codes H, K, M, N, P, and S

Compatibility

Designed for use with DG.-4 and GRIP-4 series indexable inserts. Compatible with universal workpiece materials coded H, K, M, N, P, and S per ISO material classification.

Installation Notes

Installation is performed by qualified machinists or CNC tooling technicians. Ensure the machine spindle is fully stopped and the machine is in a safe, locked-out state before mounting or removing the toolholder. Confirm shank seating and clamp torque match the machine tool manufacturer's tooling specifications. Do not exceed the maximum workpiece diameter of 1.97 inches for this holder style.