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The KENNAMETAL 4175863 is a solid carbide grooving insert designed for precision external grooving and parting operations on CNC lathes and turning centers. It carries the KCU10 manufacturer grade with a PVD-applied AlTiN coating for improved wear resistance and thermal protection at elevated cutting temperatures. The insert features a 3.18 mm cutting width, a maximum depth of cut of 2.79 mm, and a corner radius of 0.19 mm. The K chip breaker geometry promotes controlled chip formation during interrupted and continuous grooving cuts. This insert is intended for use by machinists and toolroom professionals working with the Top Notch clamping system.
The 4175863 is suited for production turning environments where consistent groove width and depth control are required. It is configured for right-hand cutting orientation and fits clamp-style toolholders in the Top Notch series. Typical applications include grooving of steel and hard alloy workpieces on manual or CNC turning equipment. The insert size designation is 2125, with a cutting height of 5.56 mm and an overall width of 3.84 mm, making it appropriate for medium-duty grooving passes within a depth-of-cut range of 2.00 mm to 3.00 mm.
Designed for use with Top Notch series clamp-style toolholders that accept the NG-style insert. The MSC and manufacturer cross-reference number is NG2125R/LK. Verify toolholder bore and clamping slot dimensions against the 2125 insert size before installation.
This insert is installed and replaced by qualified machinists or toolroom technicians. Power down and lock out the machine spindle before changing inserts. Use appropriate insert seating and clamping torque as specified by the toolholder manufacturer for the Top Notch clamping system. Inspect the insert pocket and clamp for wear or debris before seating a new insert to ensure proper contact and secure retention.
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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