ISOISO ITS BORE USER GUIDE BHR Rough Boring Cutting Data Boring Range Boring Range Boring Range 18-28 28-50 50-68 Workpiece Hardness Overhang ap (mm) 0.5-1.0 1.0-1.8 0.5-1.0 1.0-1.8 0.5-1.2 1.2-2.0 Material HB LDRED/BDRED RE (Radius) 0.2-0.4 0.4 0.2-0.4 0.4 0.2-0.4 0.4-0.8 2.5 Vc (m/min) 120-160 100-140 120-180 110-150 120-180 110-150 ••• f (mm/rev) 0.06-0.15 0.06-0.18 0.06-0.15 0.06-0.12 0.08-0.2 0.08-0.12 Gray Cast 4Iron GGHB<20010-25••Vc (m/min)100-140 80-120 100-150 80-120 100-150 80-120f (mm/rev)0.06-0.120.06-0.10.06-0.120.06-0.10.08-0.120.08-0.1 6.3 Vc (m/min) 70-100 60-90 70-100 60-90 70-100 60-90 • f (mm/rev) 0.06-0.1 0.06-0.1 0.06-0.1 0.06-0.1 0.08-0.1 0.08-0.1 2.5 Vc (m/min) 140-200 140-200 140-220 160-250 180-220 200-280 ••• f (mm/rev) 0.06-0.15 0.06-0.18 0.06-0.15 0.06-0.18 0.08-0.2 0.1-0.25 Gray CastKIron GG25-40 4 Vc (m/min) 120-160 120-160 120-180 140-200 140-180 180-220••f (mm/rev)0.06-0.120.06-0.140.06-0.120.06-0.140.08-0.120.08-0.2 6.3 Vc (m/min) 70-100 60-90 70-100 60-90 60-100 60-120 • f (mm/rev) 0.06-0.1 0.06-0.1 0.06-0.1 0.06-0.1 0.08-0.1 0.08-0.1 2.5 Vc (m/min) 120-180 120-180 120-200 140-220 180-220 180-240 ••• f (mm/rev) 0.06-0.15 0.06-0.18 0.06-0.15 0.06-0.18 0.08-0.18 0.1-0.2 Cast Iron Spheroidal 4 Vc (m/min) 120-160 120-160 120-180 140-200 140-200 160-220 GGG & Graphite •• f (mm/rev) 0.06-0.12 0.06-0.14 0.06-0.12 0.06-0.14 0.08-0.12 0.08-0.18 6.3 Vc (m/min) 60-100 60-90 60-100 60-90 60-90 60-100 • f (mm/rev) 0.06-0.1 0.06-0.1 0.06-0.1 0.06-0.1 0.08-0.1 0.08-0.1 Boring Range Boring Range Boring Range 68-120 120-200 50-68 Workpiece Hardness Overhang ap (mm) 0.8-1.8 1.8-2.5 0.8-2.0 2.0-3.0 0.8-2.0 2.0-3.5 Material HB LDRED/BDRED RE (Radius) 0.2-0.4 0.4-0.8 0.2-0.4 0.4-0.8 0.2-0.4 0.4-0.8 2.5 Vc (m/min) 120-200 110-150 150-250 180-280 150-250 180-280 ••• f (mm/rev) 0.08-0.25 0.08-0.3 0.08-0.25 0.08-0.35 0.08-0.25 0.08-0.35 Gray CastIron GGHB<20010-25 4•• Vc (m/min) 100-150 80-120 120-170 120-170 N.R N.Rf (mm/rev)0.08-0.180.08-0.20.08-0.180.08-0.25 6.3• Vc (m/min) 70-100 60-90 N.R N.R N.R N.Rf (mm/rev)0.08-0.150.08-0.12 2.5 Vc (m/min) 250-300 250-350 250-350 250-350 250-350 250-350 ••• f (mm/rev) 0.12-0.35 0.12-0.35 0.15-0.3 0.15-0.4 0.15-0.3 0.15-0.4 Gray CastKIron GG25-40 4•• Vc (m/min) 200-270 230-300 200-300 200-270 N.R N.Rf (mm/rev)0.1-0.250.12-0.30.15-0.30.15-0.35 6.3• Vc (m/min) 70-150 60-120 N.R N.R N.R N.Rf (mm/rev)0.1-0.150.12-0.25 2.5 Vc (m/min) 200-240 200-280 200-280 220-300 220-300 220-300 ••• f (mm/rev) 0.12-0.3 0.12-0.3 0.15-0.3 0.15-0.35 0.15-0.3 0.15-0.35 Cast Iron Spheroidal 4GGG& Graphite••Vc (m/min) 160-220 180-240 180-250 200-270 N.R N.Rf (mm/rev)0.1-0.20.12-0.250.12-0.20.15-0.35 6.3• Vc (m/min) 60-100 60-100 N.R N.R N.R N.Rf (mm/rev)0.1-0.150.12-0.2 N.R. = Not Recommended Stability ••• Good •• Normal • Poor LDRED BDRED In case of a single or a stepped boring cutter configuration, only half the feed should be applied. 475