Union Tool Carbide End Mill Taper Neck Ball End Mill HTNB HTNB2020-340-1 1 piece

Catalog number: HTNB2020-340-1 Features: ●High rigidity achieved by improved tapered neck shape. ●Uses HM coating that achieves outstanding heat resistance and lubricity. ●Can cut high-speed steel materials of 65HRC. ●Achieves unprecedented long life. ●High R accuracy of ±0.005, outer diameter tolerance of 0/-0.015. Applications: ●Cutting materials: hardened steel (up to 55HRC) (up to 60HRC) (up to 65HRC), pre-hardened steel, copper (wet cutting recommended), carbon steel, alloy steel, cast iron. Specifications: ●Ball radius (mm): 1 ●Neck length (mm): 34 ●Blade length (mm): 1.6 ●Total length (mm): 70 ●Shank diameter (mm): 4 ●Surface treatment: HM coating ●Twist angle 30° ●Ball radius: R1.0 ●Neck taper angle (TN): 30′ ●Total length (L): 70 ●Shank diameter (φd): 4 ●Effective length (l): 3 ●Blade length (l): 1.6 ●Neck diameter (φd): 1.91 ●Shank taper angle (Bta): 16° ​​Material/Finish: ●Ultrafine particle alloy (Super MG) Note: ●The shank taper angle is a guideline. ●If interference with the workpiece is required, be sure to measure it and confirm. ●Please be careful of contact between the shank and the workpiece.