Coated SUMIBORON H Hardened Steel BNC200 Bearing Steel Excellent wear and fracture resistance! Predictable tool life on a wide range of applications! - General Our silver coloured Sumiboron insert grade BNC200 offers safe reliable cutting and predictable tool life. The newly developed cutting material with enhanced edge strength is coated with TiAlN based ceramic for excellent wear resistance and realises extended tool life even when interrupted cutting. This grade is especially suitable for medium speed machining of carburised surfaces. - Advantages l Predictable tool life! Extended tool life is realised even when high speed cutting thanks to excellent wear resistance. l Wide range of applications! Sumiboron is suitable for a wide range of applications eg. from low to high speed interrupted cutting. l The newly developed brazing technology maximises edge strength making Sumiboron suitable for interrupted and continuous cutting. - Performance Continuous Cutting Interrupted Cutting 0,10 -- Competitor´sCBN BNC200 BNC200 Competitor´s 0,05 -- BNX10 CBN Breakage (25%) BNX10 Breakage (5%) l l l l l l l 0 2 4 6 0 25 50 75 100 Cutting Length (km) Comparison of Tool Life Ratio (BNC200 = 100%) Work material: 15CrMo5 (HRC58-62) Work material: 15CrMo5 (HRC58-62) Insert type: CNGA 120408 NC-4 Insert type: CNGA 120408 NC-4 Cutting data: vc = 200 m/min, f = 0,1 mm/rev, doc = 0,1 mm Cutting data: vc = 200 m/min, f = 0,1 mm/rev, doc = 0,1 mm Dry Dry BNC200 features excellent wear resistance comparable with BNX10, plus outstanding fracture resistance. - Application Range 300 BNC100 1 Recommended Cutting Conditions BNC2010 BNC160 200 BNC2020 vc (m/min) f d oc5080ll170 220l l(mm/rev)(mm) 120100 BNC200 0,03 - 0,25 0,05- 0,5 BNC300 Coolant ... Continuous cutting: Dry or Wet Interrupted cutting: Dry Can be used in a wide range of applications Continuous Light Interrupted Medium Interrupted Heavy Interrupted from low to high speed operation. Small Impact Force on Cutting Edge Large L16 SUMIBORON Cutting Speed (m/min)Interruption Frequency (mm)Width of Flank Wear