Kennametal K68 Round Carbide Inserts, Grade K68 3pcs

Kennametal K68 Round Carbide Inserts — versatile CVD-coated inserts designed for steel and cast iron machining in general-purpose applications. Model: K68 (unmarked round geometry — equivalent to RNG/RCMB series) Grade: K68 Manufacturer: Kennametal Inc. Country of Manufacture: USA Insert Type: Round, negative rake, double-sided (two cutting edges) Insert Diameter (D): 0.375–0.625 in (9.53–15.88 mm typical range depending on holder type) Thickness (S): 0.125–0.187 in (3.18–4.76 mm typical) Hole Diameter (D1): 0.140–0.250 in (3.6–6.4 mm) Relief Angle: 0° (negative geometry, double-sided use) Material: Submicron tungsten carbide substrate with multilayer CVD TiC/TiN coating Grade K68 Characteristics: • General-purpose CVD-coated carbide optimized for steel and cast iron • Excellent wear resistance and fracture toughness balance • Suitable for both roughing and semi-finishing cuts • Works efficiently in dry or coolant-assisted operations ISO Application Range: P25–P45 / K20–K40 Recommended Cutting Speed: • Steel: 400–800 SFM (120–245 m/min) • Cast Iron: 500–950 SFM (150–290 m/min) Feed Rate: 0.003–0.015 in/rev (0.08–0.38 mm/rev) Depth of Cut: Up to 0.200 in (5 mm) Color: Gold (TiN-coated surface) Mounting: Center hole for screw clamping (RNGN/RCMN-compatible holders) Package Quantity: 3 inserts per pack Applications: • General turning and facing of steels and cast irons • Roughing, semi-finishing, and interrupted cutting • CNC and conventional lathe operations Please review pictures carefully and let us know if you have any questions!