Kennametal CNMG120408UP KCM35 Super-Tough Carbide Substrate High Metal Removal

CNMG120408UP KCM35 is authentic American Kennametal Kenloc series 80° square negative rake MTCVD coated carbide turning insert, specially engineered for heavy stock removal rough turning and medium semi-finishing of cast stainless steel, alloy structural steel and iron-based heat-resistant superalloys, mainly applied to external OD shaft turning and end face turning operations. Equipped with exclusive UP heavy-duty universal roughing chipbreaker and balanced 0.8mm medium roughing nose radius, each double-sided square insert provides four independent reusable cutting edges to drastically reduce per-edge tool consumption cost. Adopting KCM35 super-tough CVD coated gradient carbide substrate, it perfectly matches CCLNR/CCMNN series Kenloc lever-lock negative turning tool holders. The UP chipbreaker features optimized positive rake surface, enabling large depth of cut and high feed roughing parameters while maintaining stable chip curling and evacuation, suitable for continuous heavy roughing and severe interrupted cutting of uneven cast stainless steel and forged alloy blanks. Widely deployed on medium and large heavy-duty CNC lathes for automotive cast engine parts, stainless steel pump valve bodies, heavy machinery alloy shafts and casting structural component mass rough turning production lines.

• Classic 80° square negative rake geometry with four independent usable cutting edges, superior cost efficiency for high metal removal rate rough turning mass production workshops
• Exclusive UP heavy-duty universal roughing chipbreaker with optimized positive rake face design; large-capacity segmented chip pocket smoothly curls long ductile stainless steel chips into short controllable fragments, prevents chip winding and scratch damage on rough machined workpiece surfaces
• KCM35 proprietary super-tough cobalt-enriched gradient carbide substrate, outstanding impact resistance, effectively resists edge micro-chipping and catastrophic insert fracture under severe heavy interrupted cutting of uneven casting and forged blanks
• Multi-layer TiN-MT-TiCN-Al₂O₃ MTCVD composite coating system, ultra-high thermal barrier performance, excellent anti-crater wear and anti-flank wear capability; polished coating surface greatly inhibits built-up edge adhesion when machining sticky cast stainless steel even at low cutting speeds
• Thick 4.763mm rigid insert substrate, high structural rigidity, can withstand heavy depth of cut and high feed rough turning loads without insert deformation
• Precision ground cutting edge with controlled micro edge honing treatment, improves edge impact resistance and ensures stable dimensional consistency after long-cycle roughing operations
• Standard central clamping hole for Kenloc lever-lock tool holders, high clamping rigidity under heavy roughing cutting load, minimizes machining vibration and ensures consistent stock removal allowance
• Multi-material universal processing adaptability, covers cast stainless steel, alloy structural steel, grey cast iron and low-temperature iron-based superalloys, simplifies heavy machinery workshop rough turning tool inventory varieties and procurement costs

• Cast austenitic stainless steel, martensitic stainless steel, medium carbon structural steel, low alloy forged steel, grey cast iron, ductile iron, iron-based low-temperature heat-resistant superalloys

• Continuous cast stainless steel external shaft heavy rough turning, end face large stock removal roughing, medium semi-finish contour turning, severe interrupted uneven casting and forging blank rough turning

• Automotive casting workshop: Cast stainless steel engine housing, exhaust manifold rough turning batch production
• Fluid pump & valve manufacturing factory: Stainless steel cast pump body, high-pressure alloy valve blank heavy rough stock removal processing
• Heavy machinery component production line: Large alloy steel casting shaft, gear rough blank high-efficiency rough turning
• General casting processing plant: Stainless steel casting structural fittings, equipment cast iron housing continuous heavy roughing
• Energy equipment workshop: Heat-resistant alloy cast fittings, low-temperature stainless steel casting parts severe interrupted rough turning mass processing