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The KENNAMETAL 4034787 is a solid carbide grooving insert designed for precision external and internal grooving operations on CNC lathes and turning centers. Manufactured to the G0505GMP geometry in grade KCU10, this insert features a PVD-applied AlTiN coating that supports elevated cutting speeds and extends tool life in ferrous and hardened materials. The neutral hand orientation and 5.05 mm cutting width make it suitable for straight grooving applications where consistent dimensional accuracy is required. Machinists and tool-and-die professionals working on production turning lines or job-shop lathes will find this insert performs reliably across a range of depth requirements up to 4.19 mm.
This insert belongs to Kennametal Series A4 and carries the manufacturer catalog number A4G0505M05U04GMP. It is sized at 0505 and is intended for metric-dimensioned toolholders matched to that insert size. The GMP chip breaker geometry is engineered to manage chip evacuation in grooving cuts, reducing the risk of chip packing in the groove. The 90-degree included angle and 0.41 mm corner radius support clean groove walls and controlled surface finish. Applications include groove cutting on steel, stainless steel, and cast iron workpieces in both high-production and maintenance machining environments.
Designed for use with Series A4 toolholders accepting the 0505 insert size in metric configurations. Refer to the manufacturer catalog number A4G0505M05U04GMP when cross-referencing compatible toolholder bodies.
Installation is performed by qualified machinists or toolroom technicians. Always power down and lock out the machine spindle before seating or replacing inserts. Use the appropriate torx or clamp screw driver specified for the toolholder to avoid stripping the clamping mechanism. Verify insert seating and clamp torque before resuming cutting operations, and confirm that coolant flow is directed to the cutting zone per the toolholder manufacturer guidelines.
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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