Magic Ball ● Applicable Inserts ● Recommended Depth of Cut Insert Description Description Depth of Cut (mm) Applications Top Face RDFG 08FR ap Pf Mark MRF08-S12 0.2 (Max.0.3) 0.8 10FR MRF10-S12 0.2 1 12FR Standard MRF12-S12 0.5 1.2 16FR Neck MRF16-S20 0.5 1.6 20FR MRF20-S25 1 2 ● Top Face Shown 25FR MRF25-S32 1 2.5 ・Check the Top Face Mark of both insert and toolholder. MRF08-S12-130 0.2 (Max.0.3) 0.8 MRF10-S12-150 0.2 1 Long MRF12-S12-160 0.5 1.2 Neck MRF16-S20-160 0.5 1.6 MRF20-S25-180 1 2 Pf ap MRF25-S32-200 1 2.5 Carbide MRFW08-S08 0.2 (Max.0.3) 0.8 Standard MRFW10-S10 0.2 1 Neck MRFW12-S12 0.5 1.2 Carbide MRFW08-S08-130 0.2 (Max.0.3) 0.8 Long MRFW10-S10-140 0.2 1 Neck MRFW12-S12-150 0.5 1.2 For φ8, Holder may be broken because of over load if ap exceeds 0.3mm. ◆ Recommended Cutting Conditions (At Cutting Dia. φD) Insert Vc fz φ8 φ10 φ12 Workpiece Material Grades (m/min) (mm/t) Vc(m/min) f(z mm/t) Vc(m/min) fz(mm/t) V(c m/min) f(z mm/t) (n:min-1) (Vf:mm/min) (n:min-1) (Vf:mm/min) (n:min-1) (Vf:mm/min) Carbon Steel PR915 100~200 0.1~0.3 150 0.2 150 0.2 150 0.2 (5,970) (2,390) (4,770) (1,910) (3,980) (1,590) Alloy Steel PR915 80~180 0.1~0.3 130 0.2 130 0.2 130 0.2 (5,170) (2,070) (4,140) (1,660) (3,450) (1,380) Mold Steel PR915 50~150 0.1~0.2 100 0.15 100 0.15 100 0.15 (3,980) (1,190) (3,180) (950) (2,650) (800) Stainless Steel PR915 50~150 0.1~0.2 100 0.15 100 0.15 100 0.15 (3,980) (1,190) (3,180) (950) (2,650) (800) Cast Iron PR915 100~200 0.2~0.4 150 0.3 150 0.3 150 0.3 (5,970) (3,580) (4,770) (2,860) (3,980) (2,390) Insert Vc fz φ16 φ20 φ25 Workpiece Material Grades (m/min) (mm/t) Vc(m/min) f(z mm/t) Vc(m/min) fz(mm/t) V(c m/min) f(z mm/t) (n:min-1) (Vf:mm/min) (n:min-1) (Vf:mm/min) (n:min-1) (Vf:mm/min) Carbon Steel PR915 100~200 0.1~0.3 150 0.2 150 0.2 150 0.2 M (2,980) (1,190) (2,390) (950) (1,910) (760) Alloy Steel PR915 80~180 0.1~0.3 130 0.2 130 0.2 130 0.2 (2,590) (1,030) (2,070) (830) (1,660) (660) Mold Steel PR915 50~150 0.1~0.2 100 0.15 100 0.15 100 0.15 (1,990) (600) (1,590) (480) (1,270) (380) Stainless Steel PR915 50~150 0.1~0.2 100 0.15 100 0.15 100 0.15 Milling (1,990) (600) (1,590) (480) (1,270) (380) Cast Iron PR915 100~200 0.2~0.4 150 0.3 150 0.3 150 0.3 (2,980) (1,790) (2,390) (1,430) (1,910) (1,150) ◆ Actual Cutting Speed (Vd) Conversion Coefficient Table Vd varies depending on ap and slant face angle. Vd can be obtained by dividing the conversion coefficient into the recommended cutting speed. Model Tool Dia.(φD) φ8 φ10 φ12 Depth of cut (t:mm) 0.1 0.2 0.1 0.2 0.2 0.5 15° 1.00 1.00 1.00 1.00 1.00 1.00 φD(Tool Dia.) Slant 30° 1.05 1.02 1.05 1.03 1.04 1.01 Face 45° 1.18 1.12 1.20 1.14 1.16 1.07 Slant Face Angle (α) Angle 60° 1.47 1.34 1.51 1.38 1.42 1.24 (α) 75° 2.15 1.82 2.24 1.92 2.02 1.60 t(Depth of cut) 90°(Horizontal Plane) 4.48 3.22 5.06 3.57 3.92 2.50 Tool Dia.(φD) φ16 φ20 φ25 Depth of cut (t:mm) 0.2 0.5 0.5 1 0.5 1 15° 1.00 1.00 1.00 1.02 1.00 1.01 Slant 30° 1.05 1.01 1.02 1.00 1.03 1.00 Face 45° 1.18 1.10 1.12 1.06 1.14 1.08 φd (Actual Cutting Dia.) Angle 60° 1.47 1.30 1.34 1.21 1.38 1.25 (α) 75° 2.14 1.73 1.83 1.53 1.93 1.62 90°(Horizontal Plane) 4.48 2.87 3.20 2.29 3.57 2.55 e.g.) Suppose tool dia. 8mm, ap=0.1mm, slant face angle 90°: The actual cutting speed Vd for carbon steel machining, when Vc is 150m/mim at the biggest diameter, Vd can be obtained as Vd=150÷4.48=33.5m/min M167