1.HIGH SPEED STEEL DRILL BITS

2. The Drill Bit Range Metal Cutting Drill Bits Product Colour Code Straight Shank TCT Twist Drill Bits Product Colour Code HSS PRO HSS COBALT HSS TIN HSS TURBOMAX 3. PATENTED JET POINT TIP 1) Self-centring point for clean, fast start. The drill bit will not walk. No need for centre punching. 1 3 3) The special shoulder design provides clean exit holes and guarantees perfectly round holes when drilling sheet metal. Conventional drill bits tend to produce triangular holes in sheet metal. The Jet Point is CBN ground (Cubic Boron Nitride - Industrial Diamond) and will stay sharp longer and produce more holes than conventional drill bits. 2 2) Computer designed cutting edges for faster and more comfortable drilling. Will drill 2 - 3 times faster than conventional drill bits. TURBOMAX 4. Turbomax Jet Point seen from front. APPLICATION Turbomax is primarily designed for drilling metal, but performs exceedingly well also in all types of wood and plastics. Can be used for drilling stainless steel, but this is not the main application for the product. For drilling stainless steel we would normally recommen a Cobalt alloyed HSS Twist Drill Bit. Remember always to use a coolant when you drill stainless steel. TURBOMAX 5. M2 HIGH SPEED STEEL The drill bit body is made from Molybdenum alloyed High Speed Steel. The Molybdenum makes the drill bit more resistant to heat and ensures a longer drill bit life. GROUND FLUTE A ground flute provides higher accuracy compared to a rolled flute. SHANK From 5. 5 mm and up the Turbomax drill bits come with 3 flats on the shank preventing the drill bit from spinning in in the chuck. HARDENING The drill bit body is hardened to app. 62 - 64 Rockwell C. TURBOMAX 6. APPLICATION HSS DIN 338 Irwin HSS Twist Drill bits are primarily designed for drilling low carbon steel and soft metals, but can also be used for drilling wood and plastics. Irwin HSS Twist Drill Bits come with ground flute and are primarily used within the industry and in professional work shops. Cheaper HSS twist drill bits mostly come with roll forged flutes. Recommended for drilling materials with a rupture strength up to 900 N/mm 7. CUTTING EDGES Precision ground cutting edges with perfect symmetry for fast drilling and perfect hole finish POINT ANGLE Relieved cone, 118. Universal point shape HARDENING The drill bits are hardened to 62 - 64 Rockwell C GROUND FLUTE Industrial quality ground flute for high accuracy drilling and fast removal of chips HSS STEEL Drill bit body manufactured from high quality HSS steel with steam oxide surface finish DIN 338 Manufactured acc. to DIN 338 Standards 8. PRECISION MACHINED Irwin HSS PRO twist drills are precision machined to manufacture high accuracy holes and meet the strict demands from the industry Same length of cutting edges and same cutting angles secures high quality holes Drill bit centre and rotation centre must come together at this point for perfect drilling results 118 Point angle 9. STANDARD DIN 338 VPA TEST RESULT: OUTSTANDING ! Several quality tests were made by VPA leading to the conclusion: OUTSTANDING. VPA (Versuchs- und Prfanstalt) is an independent German laboratory that specializes in a.o. various kinds of quality tests. Irwin HSS PRO twist drill bits had a total performance rate of more than 160%. Outstanding is the absolute top rating given by VPA. 10. APPLICATION HSS DIN 338 Co Irwin HSS PRO Co Twist Drill bits are primarily designed for drilling hard and tough steels like stainless steel V2A, V4A and other high alloy steels. Irwin HSS PRO Co Twist Drill Bits come with ground flute and Split Point and are primarily used within the industry and in professional work shops. Recommended for drilling materials with a rupture strength up to 800 - 1100 N/mm HSS PRO Co Twist Drill Bits should always be used with a coolant. 11. COBALT ALLOYED Drill bit body manufactured from high quality HSS steel containing 5% Cobalt (Co) The added 5% Cobalt improves the red hardness (heat resistance) of the drill bit and results in significantly extended life DIN 338 Manufactured acc. to DIN 338 Standards GROUND FLUTE Industrial quality ground flute for high accuracy drilling and fast removal of chips SURFACE FINISH Tempered matt surface finish 12. CUTTING EDGES Precision ground cutting edges with perfect symmetry for fast drilling and perfect hole finish 135 SPLIT POINT GRINDING Flatter point compared to 118 is ideal for drilling tougher, harder high-alloy materials The Split Point has less tendency to walk (self-centring), and reduces drilling pressure and torque. Also helps prevent work hardening 135 Split Point 118 Relieved Cone 13. APPLICATION HSS DIN 338 TiN Irwin HSS PRO TiN Twist Drill bits are primarily designed for drilling harder, tougher alloys. Recommended for production applications where repetitive drilling is done. Irwin HSS PRO Tin Twist Drill Bits come with ground flute and Split Point and are primarily used within the industry and in professional work shops. Recommended for drilling materials with a rupture strength up to 900 N/mm 14. TITANIUM NITRIDE COATED Drill bit body manufactured from high quality HSS steel coated with 2.5 Titanium Nitride (TiN) The TiN coating has a hardness of app. 80 HRC and is very resistant to wear TiN has a low coefficient of friction. This results in less power being consumed and less heat generated during the drilling GROUND FLUTE Industrial quality ground flute for high accuracy drilling and fast removal of chips Titanium Nitride has poor welding characteristics to most materials. Pressure and heat welding between chip and tool is reduced. 15. SPEED AND FEED Compared to traditional HSS Twist Drill Bits speed can be increased by 40 - 60% and feed by 10 - 20% without reducing the life time of the drill bit significantly PRODUCTIVITY TiN drill bits will produce 6 - 10 times as many holes as traditional HSS drill bits. HOLE FINISH The TiN coating also gives a smoother surface finish in the hole and reduces the need for post treatment of the hole. DIN 338 Manufactured acc. to DIN 338 Standards 16. CUTTING EDGES Precision ground cutting edges with perfect symmetry for fast drilling and perfect hole finish 135 SPLIT POINT GRINDING Flatter point compared to 118 is ideal for drilling tougher, harder high-alloy materials The Split Point has less tendency to walk (self-centring), and reduces drilling pressure and torque. Also helps prevent work hardening 135 Split Point 118 Relieved Cone 17. APPLICATION Irwin TCT Twist Drill Bits are primarily designed for drilling hard and very abrassive materials like Cast Iron Hardened Steel Bronze Alloys Manganese Alloyed Steel but will also perform very well in Bakelite Fibre Glass Porcelain Hard Rubber Marble Slate Irwin TCT Twist Drill Bits are primarily used within the Metal Working Industries. TCT TWIST DRILL BITS 18. DRILLING EQUIPMENT Irwin TCT Drill Bits are designed to be used in stationary machines like Pillar Drills (Drill Presses) Lathes Machine Centres The TCT Twist Drill Bits are not to be used in hand held drills. For perfect results always use correct Cutting Data. Cutting Data is a combination of Speed (RPM) and Feed (advance). TCT TWIST DRILL BITS 19. STAINLESS STEEL Irwin TCT Twist Drill Bits are not be recommended for drilling Stainless Steel. For Stainless Steel we recommend Cobalt Alloyed HSS Twist Drill Bits. SOFT STEEL (unhardened steel) Irwin TCT Twist Drill Bits are designed to drill hard materials and will not perform well in soft steel. For this material we recommend HSS Twist Drill Bits. Short Chipped Material Long Chipped Material SHORT CHIPPED/LONG CHIPPED All types of hardened steel will produce short chips when drilled. Soft steel will produce long chips. Irwin TCT Drill Bits are not designed to drill long chipped material. TCT TWIST DRILL BITS 20. FINISH Glass blasted surface finish. CARBIDE TIP C2 Carbide Tip will drill hardened material up to a hardness of 50 Rockwell C. Four Facette ground for low drilling pressure and perfect centring. Diameter tolerance +0/-0.018 - 0.039 mm. FLUTE Extra deep ground double flutes for extra chip capacity. BODY Drill bit body made from Chrome Vanadium Steel. Hardened to 56 Rockwell C. BODY CLEARANCE Reduced flute land means less friction. POINT ANGLE 118 point angle. TCT TWIST DRILL BITS 21. Drill Bit Diameter: 6.0 mm - Drilling Depth: 18 mm - Cast Iron HB 2 - 300 Feed (Advance) 0.14 mm 0.08 mm Speed RPM 840 3000 mm Hole per min. 117.6 240 mm hole per 30 min. 3528 7200 Number of holes per 30 min. 196 400 COMPARISON OF CUTTING DATA & PERFORMANCE FOR HSS & TCT TWIST DRILL BITS HSS TCT TCT TWIST DRILL BITS Drill bit range 0.2 mm 14 mm. Imperial 25/64 1/2