Uncoated SUMIBORON for Hardened Steel Machining H  BN1000 / BN2000 Hardened Steel ■ Cutting Performance ● BN1000 ● BN1000/BN2000 Wear Resistance (Continuous Cut) Chipping Resistance (Interrupted Cut) Flank Wear Width (mm) 0.16 0.14 Comp. CBN 0.12 BN1000 Approx 2x Tool life! 0.10 BN1000 0.08 0.06 Previous CBN (1) 0.04 0.02 0 1 2 3 Cutting Distance (km) Comp. CBN (1) Work Material: SUJ2 Bar (58-62HRC) Cutting Conditions: vc=150m/min, f=0.1mm/rev, ap=0.2mm, Dry BN2000 Approx 1.4x Tool life! ● BN2000 Wear Resistance (Continuous Cut) Breakage - Cannot Continue Previous CBN (2) 0.25 Comp. CBN Flank Wear Width (mm) 0.20 BN2000 0.15 Able to continue Comp. CBN(2) 0.10 0.05 0 50 100 150 0 2 4 6 8 10 Tool Life Ratio (%) BN2000's previous CBN as 100% Cutting Distance (km) Work Material: SCM415H 8V Grooved (58-62HRC) Work Material: SCM415H Bar (58-62HRC) Insert: 2NU-CNGA120408 Cutting Conditions: vc=100m/min, f=0.1mm/rev, ap=0.2mm, Dry Cutting Conditions: vc=150m/min, f=0.1mm/rev, ap=0.2mm, Dry ■ Machining Precision ● BN1000 ● BN2000 Size Accuracy Comparison (Continuous Cut) Surface Roughness Comparison (Continuous Cut) Comp. CBN 10 Comp. CBN (μm) 4 Variance (μm) 8 Roughness,Rz 3 Previous CBN Diameter 6 BN1000 2 L 4 BN2000 2 Surface 1 SUMIBORON 0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 0 1 2 3 4 5 6 7 Cutting Distance (km) Cutting Distance (km) Work Material: SCM415H φ130 Diameter (58-62HRC) Work Material: SCM415H Bar (58-62HRC) Inser:t 2NU-CNGA120408 Insert: 2NU-CNGA120408 Cutting Conditions: vc=200m/min, f=0.1mm/rev, ap=0.1mm, Wet Cutting Conditions: vc=100m/min, f=0.08mm/rev, ap=0.2mm, Dry L17