ISOISO .0015 ITS BORE USER GUIDE Cutting Conditions for Boring Operations with BHC Combi Rough and Fine Cutting Feed fn=mm/rev Cutting Depth mm Boring Depth to Working Speed Roughing Material Diameter Ratio Conditions Vc=m/min RE=0.2 RE=0.4 Carbide Grade Finishing Ø28-Ø46 Ø46-Ø75 Ø75-Ø160 P Carbon SteelHB < 200Carbon SteelHB > 200LDRED/BDRED = 2.5LDRED/BDRED = 4LDRED/BDRED = 6.3LDRED/BDRED = 2.5LDRED/BDRED = 4LDRED/BDRED = 6.3goodnormaldifficultgoodnormaldifficult160-250 0.1-0.2 0.1-0.2120-1800.1-0.20.1-0.2IC807, IC908,0.15-0.370-100*0.1-0.150.1-0.2IC520N, IC20N,140-2000.1-0.20.1-0.2IC30N, IC8150,100-1600.1-0.20.1-0.2IC8250, IC30280.15-0.370-100*0.1-0.150.1-0.21.51.5222.52.5 Stainless LDRED/BDRED = 2.5 goodMSteel AISILDRED/BDRED = 4normal304-316LDRED/BDRED = 6.3difficult100-14080-11060-90 0.1-0.2 0.1 -0.20.1-0.20.1 -0.2*0.1-0.150.1-0.2IC807, IC30N,IC30280.15-0.31.5 2 2.5 K Cast Iron LDRED/BDRED = 2.5 goodLDRED/BDRED = 4normalLDRED/BDRED = 6.3difficult120-16090-12060-90 0.1-0.2 0.1 -0.20.1-0.20.1 -0.2*0.1-0.150.1-0.2IB55, IC908,IC5005, IC4280.15-0.322.5 3 LDRED/BDRED = 2.5 good 250-350 0.1-0.2 0.1-0.2 N Aluminum LDRED/BDRED = 4 normal 160-250 0.1-0.2 0.1-0.2 ID5, IC20 0.15-0.3 2 2.5 3 LDRED/BDRED = 6.3 difficult 100-150 *0.1-0.15 0.1-0.2 * Only for finishing Inserts. ** Use inserts with the same corner radii for both roughing and finishing inserts Vc Cutting speed (m/min) D Diameter of workpiece (mm) n Number of revolutions / min' (rev./min) Vf Feed rate (mm/min.) fn Feed / rev/ (mm/rev) ∏ 3.14 Vc= ∏·D·n1000 LDRED BDRED 0 n= Vc 1000∏·D LDRED BDRED Vf= n·fn 0.2 ap roughing ap finishing In case of a single or a stepped boring cutter configuration, only half the feed should be applied. Cutting Conditions for BHD / BHF / BHE Fine Boring Heads ap 0.1-0.25 Feed f=mm/rev Cutting Speed Insert Radius Material LDRED/BDRED Stability Vc=m/min RE=0.2 RE=0.4 Insert Grade P Carbon SteelHB<200 LDRED/BDRED=2.5LDRED/BDRED=4LDRED/BDRED=6.3Carbon SteelHB<200LDRED/BDRED=2.5LDRED/BDRED=4LDRED/BDRED=6.3goodnormaldifficultgoodnormaldifficult 200-300 0.05-0.08 0.08-0.10160-2500.05-0.080.08-0.1070-1000.05-0.08-160-2500.05-0.080.08-0.10150-2000.05-0.080.08-0.1070-1000.05-0.08-IC20NIC30NIC54IC20NIC30N M Stainless SteelAISI 304-316LDRED/BDRED=2.5LDRED/BDRED=4LDRED/BDRED=6.3goodnormaldifficult 120-160 0.05-0.08 0.08-0.10100-1400.05-0.080.08-0.1070-1000.05-0.08-IC54 LDRED/BDRED=2.5 good 120-160 0.05-0.08 0.08-0.10 IC20 K Cast Iron LDRED/BDRED=4 normal 100-140 0.05-0.08 0.08-0.10 LDRED/BDRED=6.3 difficult 70-100 0.05-0.08 - LDRED/BDRED=2.5 good 300-400 0.05-0.08 0.08-0.10 IC20 N Aluminum LDRED/BDRED=4 normal 250-350 0.05-0.08 0.08-0.10 LDRED/BDRED=6.3 difficult 100-150 0.05-0.08 - (1) ap=0.1 min 477 .0005 .001