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The ISCAR 2300851 is a right-hand indexable cutoff toolholder built for grooving, parting, and turning operations on CNC lathes and manual turning centers. It uses a self-grip insert holding method that clamps compatible GFN and GFR/L series inserts securely without additional screws. The toolholder accepts a maximum workpiece diameter of 2 inches and a minimum insert width of 0.139 inches, making it suited for precise parting and grooving work. The shank measures 0.75 inches in height and 0.75 inches in width, with an overall length of 4.5 inches. Manufactured to ISO 13399 standards, this holder gives machinists a reliable, repeatable setup for high-volume turning operations.
This toolholder is intended for use in production and job-shop turning environments where consistent parting and grooving performance is required. It is commonly installed in tool turrets on CNC lathes or mounted in standard boring bar holders on manual lathes. The SGTF-style toolholder profile is designed for radial cutoff and grooving applications. Machinists and CNC setup technicians working with steel, stainless, cast iron, and non-ferrous materials will find this holder appropriate for a wide range of turning cell configurations. Coolant-through capability is not supported on this holder.
Compatible with GFN-A, GFN-C, GFN-J, GFN-M, GFN-U, GFN-W, GFR/L-C, GFR/L-J, GFR/L-W, and GFR-U inserts from the ISCAR Self Grip series. Also referenced by manufacturers catalog number SGTFR19-4.
Installation is performed by a machinist or CNC setup technician. Power down and lock out the machine spindle before mounting or indexing inserts. Ensure the shank is properly seated and clamped in the turret or toolpost to the machine manufacturer's specified torque using calibrated tooling. Verify insert seating in the self-grip pocket before resuming cutting operations, and confirm workpiece diameter does not exceed the 2-inch maximum rating of this holder.
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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