Spindle RUKO 93 mm Spiral

The RUKO drill bit is made of high-performance cobalt-alloyed high-speed steel, a material that provides superior heat resistance and outstanding hardness, ideal for drilling operations in materials that produce difficult-to-remove chips. With an approximate length of 93 mm and a diameter of 5.5 mm, this twist drill features a specially ground conical tip designed with a split point according to DIN 1412 C standard, which improves accuracy and facilitates drilling start without slipping. It has a cutting angle of 130º and a helix angle between 20º and 30º, optimized for efficient chip evacuation and longer tool life. The diameter tolerance is h8, ensuring precise fit in technical applications. Its golden brown surface is not only distinctive but also protects against wear during use. This drill bit is designed for right-hand feed and is suitable for working with demanding materials such as alloyed and unalloyed steel up to approximately 900 N/mm² tensile strength, gray and malleable cast iron, as well as acid-resistant stainless steels, including those with high chromium content like V2A and V4A. The product comes in a translucent plastic case with a red background label, facilitating safe storage and transport. This RUKO drill bit combines durability, precision, and versatility for professional applications requiring demanding drilling and consistent tool life, making it a reliable tool for tough metalworking tasks.

• Shape: Spiral
• Approx. dimensions: 93 mm
• Approx. diameter: 5,5 mm
• Cut size: 57 mm
• Colour: Bronze