
( øD - Tolerance: m7 ) SumiDrill Power Series SDP Type (DIN) Maximum Feed Rate Result Feed Rate (mm/rev) 0,30 0,40 0,50 0,55 0,60 0,65 0,70 0,75 0,80 SDP Type OK OK OK OK OK OK OK OK Competitor OK Breakage! Internal test conditions Drill: Ø 4, L/D=5 Work Material: Carbon Steel (C50) Cutting Data: vc=80m/rev, ap=18mm Comparison of Tool Life Triple Tool Life Drill: Ø 8, L/D=5 Work Material: Carbon Steel (C50) SDP Type Cutting Data: vc=80m/min, f=0,15mm/rev, ap=38mm, Through hole, Internal coolant Competitor Breakage! SDP Type 0 20 40 60 Cutting Length (m) Competitor SDP Type Cut volume: 950cm3 Cut volume: 3800cm3 Competitor Breakage 500 Holes Work: C50, Drill Dia: 8mm, L/D=5 2000 Holes Excellent Hole Accuracy Hole Accuracy Chip Shape Compact cutting chips Multi-Drills Stable hole size Oversize (mm) SDP Type 0,011 Number of holes Entrance Bottom Longer cutting chips Unstable Oversize (mm) Competitor Breakage! 0,016 Number of holes Entrance Bottom Drill: Ø 8, L/D=5 Workpiece: Carbon Steel (C50) Cutting Data: vc=80m/min, f=0,25mm/rev, ap=24mm, Blind-hole, Internal coolant K7