KUFFLER , Iran

Koehler cobalt drill bits are made from HSS-E steel with 8% cobalt. This alloy maintains 67-70 Rockwell C hardness at elevated temperatures. Standard diameters range from 1 to 20 mm in 0.1 mm increments. Spiral flute length varies from 30 to 150 mm depending on size. A 135-degree split point optimizes penetration into hard steels. The TiAlN coating increases wear resistance by 300 percent. These bits are suitable for alloy steels up to HRC 55 hardness. Recommended cutting speed is 15 to 35 meters per minute.

The bit features two spiral flutes with a 40-degree helix angle. This design facilitates chip evacuation and reduces binding risk. The precise four-facet point ensures excellent centering and stability. The body is polished with diamond grinding for reduced friction. A PVD coating system ensures uniform and durable layer adhesion. These bits operate on CNC and pillar drills at speeds up to 8000 RPM. Effective drilling depth reaches 5 times the bit diameter without accuracy loss. They carry DIN 338 and ISO 10899 quality certifications.You can order and buy KUFFLER from Iran by contacting us through whatsaap and email.
WEBSITE: KUFFLER Iran