Twist drill bit 228 series

solidmulti-purposefor plastics

High performance twist drill for all-purpose use in drilling machines and cordless drills. (Materials up to 5,0 mm thickness) » The 3-surface-shank provides an excellent fixing within the drill chuck with little effort. In addition, the shank ensures an ideal power transmission. No spinning of the drill! » The 135º high performance cutting edge ensures a very high aligned preciseness, particularly when hand-operated with a cordless drilling machine. The edge prevents sliding off corrugated surfaces whilst spot-drilling. » Increased wear resistance of the rechargeable battery due to reduction of cutting forces. » The black bevel increases the wear resistance and prevents cold welding and build-up edges. » The 40º helix angle enables a perfect and fast chip removal and provides a high cutting speed along with increased stability and accuracy. HSSE-Co 5: Heavy-duty high speed steel with 5 % cobalt content. High ductility and heat resistance, for drilling holes in difficult-to-machine materials with a strength of up to 1100 N/mm². Technical data Coating - Bronzed / black oxidized surface Shaft - 3-way clamping surface Cutting direction - right hand cutting Tip grinding - Shape C: Split point Tolerance - h8 Spiral angle - 40° Drilling depth - 5 x diameter Groove profile - wide, for better chip removal Core - normal Point angle - 135° Type - UNI