Boring Technical information Recommended cutting conditions Boring: Positive insert (Cutting diameter under 10 mm) ISO Corner-R Lower limit - Recommendation - Upper limit Workpiece material Hardness Cutting range Applications Chipbreaker Insert grades classification (RE) Vc (m/min) ap (mm) f (mm/rev) Finishing Continuous EZB-FLow-carbon steelHBSolid type≤FinishingLow-carbon alloy300InterruptionEZB-HContinuousInterruptionFFinishing-MediumContinuousInterruptionCFPR12250.050.15PR17250.10.2PR17250.10.230 - 70 - 11030 - 60 - 9040 - 80 - 12040 - 70 - 10040 - 80 - 12040 - 70 - 1000.05 - 0.1 - 0.20.01 - 0.04 - 0.070.05 - 0.1 - 0.20.03 - 0.07 - 0.10.05 - 0.08 - 0.10.03 - 0.05 - 0.070.05 - 0.1 - 0.150.03 - 0.07 - 0.10.05 - 0.15 - 0.250.03 - 0.05 - 0.070.05 - 0.15 - 0.250.03 - 0.07 - 0.1 Finishing Continuous EZB-FMedium-carbon steelHBSolid typeP*≤FinishingMedium-carbon alloy300InterruptionEZB-HContinuousInterruptionFFinishing-MediumContinuousInterruptionCFPR12250.050.15PR17250.10.2PR17250.10.230 - 70 - 11030 - 60 - 9040 - 80 - 12040 - 70 - 12040 - 80 - 12040 - 70 - 1000.05 - 0.1 - 0.20.01 - 0.04 - 0.070.05 - 0.1 - 0.20.03 - 0.07 - 0.10.05 - 0.08 - 0.10.03 - 0.05 - 0.070.05 - 0.1 - 0.150.03 - 0.07 - 0.10.05 - 0.15 - 0.250.03 - 0.05 - 0.070.05 - 0.15 - 0.250.03 - 0.07 - 0.1 Finishing Continuous EZB-FHBSolid typeInterruptionEZB-HHigh-carbon alloy≤Finishing280ContinuousInterruptionFFinishing-MediumContinuousInterruptionCFPR12250.050.15PR17250.10.2PR17250.10.230 - 70 - 11030 - 60 - 9040 - 80 - 12040 - 70 - 10040 - 80 - 12040 - 70 - 1000.05 - 0.1 - 0.20.01 - 0.04 - 0.070.05 - 0.1 - 0.20.03 - 0.07 - 0.10.05 - 0.08 - 0.10.03 - 0.05 - 0.070.05 - 0.1 - 0.150.03 - 0.07 - 0.10.05 - 0.15 - 0.250.03 - 0.05 - 0.070.05 - 0.15 - 0.250.03 - 0.07 - 0.1F M Finishing Continuous EZB-FStainless steelHBSolid type≤Finishing220Finishing-MediumInterruptionContinuousInterruptionContinuousInterruptionEZB-HFCFPR12250.050.15PR12250.1PR15350.2PR12250.1PR15350.230 - 60 - 8030 - 60 - 8030 - 60 - 8030 - 60 - 8030 - 60 - 8030 - 60 - 80FinishingContinuousEZB-FStainless steelHBSolid type≤Finishing300Finishing-MediumInterruptionContinuousInterruptionContinuousInterruptionEZB-HFCFPR12250.050.15PR12250.1PR15350.2PR12250.1PR15350.230 - 60 - 8030 - 60 - 8030 - 60 - 8030 - 60 - 8030 - 60 - 8030 - 60 - 800.05 - 0.1 - 0.20.01 - 0.03 - 0.050.05 - 0.1 - 0.20.02 - 0.05 - 0.070.05 - 0.08 - 0.10.03 - 0.05 - 0.070.05 - 0.1 - 0.150.03 - 0.07 - 0.10.05 - 0.15 - 0.250.03 - 0.05 - 0.070.05 - 0.15 - 0.250.03 - 0.07 - 0.10.05 - 0.1 - 0.20.01 - 0.03 - 0.050.05 - 0.1 - 0.20.02 - 0.05 - 0.070.05 - 0.08 - 0.10.03 - 0.05 - 0.070.05 - 0.1 - 0.150.03 - 0.07 - 0.10.05 - 0.15 - 0.250.03 - 0.05 - 0.070.05 - 0.15 - 0.250.03 - 0.07 - 0.1 Finishing Continuous (VNB)Solid typeInterruption(VNB-NB)KW100.030.230 - 60 - 10030 - 60 - 1000.05 - 0.08 - 0.1 0.03 - 0.05 - 0.070.05 - 0.1 - 0.150.03 - 0.07 - 0.1 HBGray cast iron≤Finishing250 ContinuousInterruptionF KW10 0.10.2 30 - 60 - 10030 - 60 - 800.05 - 0.08 - 0.1 0.03 - 0.05 - 0.070.05 - 0.1 - 0.150.03 - 0.07 - 0.1 Finishing-Medium ContinuousInterruptionWithoutchipbreakerKW10 0.20.4 30 - 60 - 10030 - 60 - 800.1 - 0.2 - 0.3 0.03 - 0.05 - 0.070.1 - 0.2 - 0.30.03 - 0.07 - 0.1 K FinishingSolid type Continuous (VNB)Interruption(VNB-NB)KW10 0.030.2 30 - 60 - 8030 - 60 - 800.05 - 0.08 - 0.1 0.03 - 0.05 - 0.070.05 - 0.1 - 0.150.03 - 0.07 - 0.1 HBNodular cast iron≤Finishing270 ContinuousInterruptionF,U KW10 0.10.2 30 - 60 - 8030 - 60 - 800.05 - 0.08 - 0.1 0.03 - 0.05 - 0.070.05 - 0.1 - 0.150.03 - 0.07 - 0.1 Finishing-Medium ContinuousInterruptionWithoutchipbreakerKW10 0.20.4 30 - 60 - 10030 - 60 - 800.1 - 0.2 - 0.3 0.03 - 0.05 - 0.070.1 - 0.2 - 0.30.03 - 0.07 - 0.1 Non-ferrous metals High Speed Finishing ContinuousRainbow surface glossWithoutchipbreakerKPD0010.05 150 - 200 - 300 0.05 - 0.1 - 0.3 0.05 - 0.1 - 0.15 N Copper alloyAluminum HB Finishing≤100Long tool lifeContinuousInterruptionF, U PDL025 0.10.2 100 - 150 - 200100 - 150 - 2000.05 - 0.3 - 0.50.05 - 0.3 - 0.50.03 - 0.1- 0.20.03 - 0.1- 0.2 Aluminum alloys Finishing ContinuousInterruptionF, U KW10 0.10.2 100 - 150 - 200100 - 150 - 2000.05 - 0.3 - 0.50.05 - 0.3 - 0.50.03 - 0.1- 0.20.03 - 0.1- 0.2 Precision Finishing Continuous WithoutHBRainbow surface glossInterruptionchipbreakerKPD0010.10.2100 - 120 - 15070 - 100 - 1200.05 - 0.1 - 0.30.05 - 0.1 - 0.30.03 - 0.07 - 0.10.03 - 0.07 - 0.1 Titanium alloys ≤ 400 Finishing ContinuousInterruptionF, U KW10 0.10.2 20 - 40 - 6020 - 40 - 600.05 - 0.2 - 0.5 0.03 - 0.1 - 0.20.05 - 0.2 - 0.50.03 - 0.1- 0.2 S HB FinishingSolid type ContinuousInterruption(VNB) KW10 0.20.2 10 - 30 - 5010 - 30 - 500.05 - 0.1 - 0.3 0.03 - 0.05 - 0.10.05 - 0.1 - 0.30.03 - 0.05 - 0.08 Heat-resistant alloys ≤ 350 Finishing ContinuousInterruptionF,U KW10 0.20.2 10 - 30 - 5010 - 30 - 500.05 - 0.2 - 0.4 0.03 - 0.05 - 0.10.05 - 0.2 - 0.40.03 - 0.05 - 0.1 40~50Hardened steelHRCFinishing ContinuousInterruption(VNB) PR930 0.20.2 30 - 50 - 7030 - 50 - 700.05 - 0.1 - 0.4 0.01 - 0.02 - 0.050.05 - 0.1 - 0.20.01 - 0.02 - 0.03 H Hard materials 45~68HRC Finishing ContinuousInterruptionMEMES KBN05M 0.20.4 60 - 100 - 14060 - 80 - 1200.05 - 0.1 - 0.20.05 - 0.1 - 0.20.02 - 0.05 - 0.10.02 - 0.05 - 0.1 * Please use it with PR1725 set to Vc = 150 m/min or below, for machining of free-cutting steel such as small size SUM. For ap and f, refer to specs for low carbon steels. • ap indicates radius F123