Sumitomo 1GRB005 Carbide Cutoff Insert AC830P Wcf

Product Description

The SUMITOMO 1GRB005 is a solid carbide cutoff insert in the WCF series, designed for parting, grooving, and chamfering operations on CNC lathes and turning centers. It carries the AC830P manufacturer grade with a CVD-applied Al2O3 coating for thermal resistance and edge durability. The insert features a 0.1181-inch cutting width, a 1/128-inch corner radius, and an 8-degree left-hand lead angle, making it suitable for precision cutoff work where controlled chip flow and surface finish matter. It is held in place by a clamp-style toolholder and is not a multi-use reversible insert. Licensed machinists and CNC operators install this insert as part of a dedicated WCF-series toolholder setup.

This insert is rated for primary workpiece materials including stainless steel and carbon steel, corresponding to ISO material codes M and P. It fits standard WCF series insert size code 3 toolholders. Typical applications include production cutoff, shallow grooving, and chamfering on turning centers in job shop and production machining environments. The AC830P grade with CVD coating is well suited for interrupted and continuous cuts on steel alloys where heat buildup and built-up edge are common concerns.

Key Features

• Solid carbide construction in AC830P grade for consistent cutting-edge integrity
• CVD Al2O3 coating process provides thermal barrier and wear resistance on steel workpieces
• 0.1181-inch cutting width for precise parting and grooving slot dimensions
• 8-degree left-hand lead angle promotes directed chip flow away from the finished bore
• 1/128-inch corner radius minimizes stress concentration at the cutting edge
• Clamp-style insert holding method for secure, repeatable seating in WCF toolholders
• Rated for chamfering, cut-off, and grooving applications in a single insert geometry

Compatibility

Designed for use with WCF series insert size code 3 clamp-style toolholders. Suitable for machining stainless steel and carbon steel workpieces. Compatible with material grades C5, C5A, and C6 classifications.

Installation Notes

Installation should be performed by a qualified machinist or CNC tooling technician. Ensure the machine spindle is fully stopped and the turret is in a safe index position before changing inserts. Seat the insert fully into the WCF toolholder pocket and tighten the clamp fastener to the toolholder manufacturer's specified torque using calibrated tooling. Inspect the insert seating surface and clamp for chips or debris before locking down to prevent micromovement during cutting.