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MLD Plus

    Mach Long Drill Exclusive for Deep Holes
    High precision results when machining deep holes

  • Excellent stability thanks to new guide margin added
  • Strong wear resistance thanks to our new PC315G grade
Code System

Code System

Features
Cutting edge shape
Cutting edge and flute shape
Straight cutting edge provides better rigidity
Excellent chip evacuation due to wider chip
pocket and improved flute surface roughness
Double margin secures machining stability
[Flute]
New grade(PC315G)
Ultra fine substrate and new coating applied
Lubricative coating layer improves chip evacuation
with lower frictional resistance
Longer tool life due to higher wear resistance
PC315G
Degree of machining precision
Improved machining precision
- Bent holes reduced
- Inside hole surface roughness improved
- Hole size uniformity increased
Improved point shape
- Precise location secured
Reduced bent holes compared to competitors (a > b)
가공 정밀도
Cutting load
Workpiece SM45C
Cutting conditions Drill Dia.(m) = Ø6.0
vc(m/min) = 70
fn(mm/rev) = 0.12
ap(mm) = 60
Wet
Tools MLD0600N-20P
가공 부하
Application Area

Application Area

Recommended Cutting Condition
Recommended Cutting Condition
Workpiece Grade Cutting
speed
vc(m/min)
Feed(Depth of cut = 10D ~ 25D)
Feed rate(mm/rev) per drill dia.(mm)
ISO Workpiece
materials
Hardness
(HB)
Recommended Ø3.0~Ø5.0 Ø5.1~Ø8.0 Ø8.1~Ø10.0
P Carbon
steel
Low carbon steel 80~120 PC315G 80(60~90) 0.10~0.15 0.15~0.20 0.20~0.25
High carbon steel 180~280 PC315G 70(60~80) 0.10~0.15 0.15~0.20 0.20~0.25
Alloy
steel
Low alloy steel 140~260 PC215G 80(60~90) 0.10~0.15 0.12~0.17 0.15~0.20
Low carbon steel 50-260 PC215G 70(60~80) 0.08~0.15 0.10~0.15 0.15~0.20
K Cast
iron
Gray cast iron 150-230 PC215G 80(60~100) 0.10~0.20 0.15~0.20 0.15~0.20
Ductile cast iron 160-260 PC215G 70(60~80) 0.10~0.20 0.15~0.20 0.15~0.20
N Aluminum Aluminum alloy 30-150 FG2 120(100~150) 0.12~0.17 0.15~0.20 0.20~0.25
Copper alloy Copper alloy 150-160 FG2 120(100~150) 0.12~0.17 0.15~0.20 0.20~0.25
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