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                                  Contact Us
                                  Hammond & Company Ltd
                                  Finway Road
                                  Hemel Hempstead
                                  Hertfordshire
                                  HP2 7PT
                                  England
                                  +44 (0)1442 212 211
                                  +44 (0)1442 252 003
                                  Send a Message
                                  We'll respond within 48 business hours
                                  Diagram

                                  Speedfeed Drills


                                  The Speedfeed drill is a twin fluted, carbide tipped coolant fed drill. The micro grain solid carbide tip is multi regrindable. The tubular shank is formed and heat treated from high quality chrome molybdenum steel into an overlapping figure of eight cross section.

                                  The maximum flute length is 900mm subject to the application being suitable. Please discuss new applications with Hammond & Company's technical department.

                                  A regrinding service is available at our Hemel Hempstead factory.

                                  ? Tungsten Carbide tipped
                                  ? Multi-regrindable
                                  ? ? 5,0 to ? 30,0 diameter
                                  ? High penetration rates
                                  ? Good size control and surface finish

                                  Ordering Information


                                  When ordering Speedfeed drills please state diameter, flute length and driver design. Alternatively, go towards the end of this website and order by Product Codes.

                                  Driver Styles

                                  Driver Styles REF d h h1 h2
                                  HAMMOND STANDARD
                                  FA 16 40    
                                  FB 25 50
                                  FC 35 60
                                       
                                  WELDON
                                  GC 16 48 24  
                                  GD 20 50 25
                                  GE 25 56 32 17
                                  GF 32 60 36 19
                                  JF 40 70 40 19
                                  Driver Styles REF d h h1 h3
                                  View PDF
                                  SANDVIK TYPE
                                  JD 16 48 34 40
                                  FF 20 48 34 40
                                  FG 25 53 38 45
                                  FH 32 55 38 45
                                  GUNDRILL TYPE
                                  FT 10 40 24  
                                  GU 16 45 31
                                  FV 20 70 34
                                  FW 25 70 34
                                  FX 32 70 34
                                     
                                     

                                  Speedfeed Cutting Data

                                   
                                  MATERIAL CUTTING
                                  SPEED
                                  FEED - mm PER REV
                                    M/MIN ? 5 -10 ? 10 - 15 ? 15-20 ? 20-30
                                  LOW CARBON STEEL 60 - 110 0.03 - 0.13 0.10 - 0.28 0.15 - 0.35 0.15 - 0.40
                                  CAST IRON 40 - 80 0.06 - 0.24 0.10 - 0.40 0.20 - 0.45 0.30 - 0.50
                                  ALUMINIUM
                                  (DIFFICULT TO CHIP)
                                  80 - 160 0.03 - 0.10 0.04 - 0.15 0.06 - 0.20 0.08 - 0.30
                                  ALUMINIUM
                                  CAST BRASS
                                  110 - 220 0.06 - 0.30 0.10 - 0.35 0.20 - 0.50 0.30 - 0.50

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