Solid Carbide Drills GS / HGS ¢ Double margin (HGS) (excluding ø.0591” to ø.0945” sizes) The HGS uses a double margin for greater stability and hole precision in deep drilling
Made with DEX Coat, the world's first compound super multi-layered coating
The HGS uses a double margin
(inch)
2.0
Surface
.40 .20 0 -20 -40 .40 .20 0 -20 -40 .40 .20 0 -20 -40
(μm)
Ra 0.56μm
Roughness Comparison
HGS
1.5
1.0
Ra 1.39μm
0.5
Competitor's Product A
J
0
Competitor's Product A
Competitor's Product B
HGS
Surface Roughness (Ra)
Ra 1.72μm
Part Material: Alloy Structural Steel (120HB) Tool: MDW0800HGS5 Cutting Conditions: v c =262sfm, f =.0098inch/rev, H =1.4961inch Internal coolant supply: Water soluble
Competitor's Product B
10.0 15.0 20.0 25.0
( μm )
Circularity
HGS (double margin)
Competitor's Product C (single margin)
Comparison
HGS Competitor's Product C
0.0 5.0
1
2
3
4
5
6
7
8
9
10
(No. of Holes)
Circularity
Part Material:1049 Steel (200HB) Tool: MDW0800HGS8 Cutting Conditions: v c =262sfm, f =.0098inch/rev
4-point guide design thanks to double margin reduces runout for improved stability. Good surface roughness and circularity.
7.7μm
19.7μm
H =2.51971inch, internal coolant supply (water soluble)
¢ Application Examples for GS Drills
z Medium Carbon Steel (250HB) for Automotive z Prehardened Mold Steel Machine Components z Structural Steel Machine Components
·Tool: MDW0980GS2 ·Cutting Conditions: v c =230sfm, f =.0059inch/rev
·Tool: MDW0970GS4 ·Cutting Conditions: v c =262sfm, f =.0098inch/rev
·Tool: MDW 050GS4 ·Cutting Conditions: v c =492sfm, f =.0118inch/rev
H =.9843inch, external coolant supply (water soluble)
H=.4724inch, external coolant supply (water soluble)
H =.2756inch, external coolant supply (water soluble)
Achieved 1.5 times the tool life! Reduced wear on peripheral cutting edge
1.3 times longer tool life than conventional tools. Good circularity and cylindricity.
Achieved 1.5 times the tool life! Good chip control
1800 holes
GS
Wear
GS
Wear
2600 holes
GS
1400 holes
Wear
Competitor's Product E
Conventional Tool
Competitor's Product D
Wear
2000 holes
Fracture
900 holes
1200 holes
Adhesion
0
1,000
2,000 (No. of Holes)
0
1,000
2,000
3,000 (No. of Holes)
0
500
1,000 1,500 (No. of Holes)
¢ Application Examples for HGS Drills
z Structural Alloy Steel for Automotive z Alloy Bearing Steel Automotive Components z Low Carbon Steel Machine Components
·Tool: MDW0570HGS5 ·Cutting Conditions: v c =262sfm, f =.0039inch/rev
·Tool: MDW 0600HGS8 ·Cutting Conditions: v c =262sfm, f =.0098inch/rev
·Tool: MDW0860HGS3 ·Cutting Conditions: v c =171sfm, f =.0079inch/rev
H =1.8898inch, internal coolant supply (oil-based)
H=.9843inch, internal coolant supply (water soluble)
H =1.378inch, internal coolant supply (water soluble)
Achieved 1.3 times the tool life!
Achieved 2.5 times the tool life!
Achieved 1.8 times the tool life!
1500 holes
HGS
Wear
HGS
Wear
1500 holes
HGS
650 holes
Wear
Competitor's Product G
Competitor's Product H
Competitor's Product F
600 holes
800 holes
Wear
Wear
500 holes
Fracture
0
500
1,000
1,500
0
500
1,000
1,500
0
500
1,000
(No. of Holes)
(No. of Holes)
(No. of Holes)
J9
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