Page 140 - Demo

138 ISCAR GENERAL PURPOSE DRILLING %u00bd%u0009Solid Carbide DrillsSolid carbide drills offer an alternative to indexable drills for machining relatively small diameter holes with tight tolerances and in some cases are the only possible solution. Solid carbide drills are preferable for interrupted applications and machining holes with external coolant above 2XD. The market for solid carbide drills is very diverse and wide, but ISCAR tools stand out for their quality and reliability. The design of solid carbide drills can be both with internal coolant supply to the cutting zone, and with external coolant. These drills are coated for increased wear resistance. At some point, the drill reaches its wear limit and to extend tool life, solid drills can be reground. Regrinding can usually be carried out multiple times. Most of ISCAR solid carbide drills comply with the DIN 6537 standard and are available in a diameter range of 0.8 to 20 mm (0.125 to 0.765 inches) with a functional length of up to 50XD depending on the drill diameter. Basically, solid drills are made with a cylindrical shank. Solid carbide drills have high rigidity and are able to work with high feed rates without compromising the quality and durability of the drill.