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The ISCAR 2500558 is an external right-hand indexable grooving toolholder designed for precision groove turning on CNC lathes and turning centers. Built in the Heli-Grip series with a HELI toolholder style, it accepts GRIP-3 and HG.-3 series inserts secured by a clamp-style holding method. The toolholder measures 6 inches in overall length with a 1 inch by 1 inch square shank and a shank length of 4.57 inches. It supports groove widths from 0.118 inches to 0.125 inches and is rated for a maximum workpiece diameter of 1.76 inches. Machinists and CNC tool room technicians install this holder in standard square-shank tool blocks on production and job-shop lathes.
The 2500558 is suited for external non-face grooving operations on a wide range of workpiece materials. Its primary workpiece material classification covers universal material groups, including ISO material codes H, K, M, N, P, and S, making it applicable to steel, stainless, cast iron, non-ferrous alloys, high-temperature alloys, and hardened materials. Typical install scenarios include OD grooving for snap-ring grooves, undercuts, and part-off prep work on small to mid-diameter turned parts in both production and prototype environments.
Designed for use with GRIP-3 and HG.-3 series indexable grooving inserts. Fits standard 1 inch by 1 inch square-shank tool blocks. No coolant-through capability; external coolant delivery applies.
Installation is performed by a qualified machinist or CNC toolroom technician. Power down and lock out the machine spindle before seating or indexing inserts or mounting the toolholder in the turret or tool block. Ensure the shank seating surfaces are clean and free of chips before torquing the clamping bolts to the machine or block manufacturer specifications. Do not exceed the maximum workpiece diameter of 1.76 inches for this holder configuration.
We pulled together the parts most installs need for this unit, plus a few add-ons worth a look. Check what you need — nothing here blocks checkout.
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