Holemaking
YG-1 Holemaking tools
YG-1 Holemaking tools are well known for its low tolerance and high technology,
continuously impressing various manufacturers around the world.
Its advance designed geometry brings out extraordinary performances,
creating a longer tool life with outstanding productivity. Also a variety of size and
shapes are available for multiple applications.

- 3&4 corner economical insert with new PVD coating.
- Bigger chip gullet for better chip evacuation.
- ST Chipbreaker for sticky material is newly developed


- High performance exchangeable drilling tools with carbide inserts and holders
- Micro grain carbide inserts and premium steel holders with secure and quick clamping system
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for carbon steels, alloy steels and cast iron
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3 X D
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5 X D
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8 X D

- Optimized for steel and cast iron machining
- Excellent Performance with Optimized Design and Hign Cutting Speed
- Superior surface finish with the most optimal flute shape design
- Unique wave-shaped cutting edge design reduces the cutting force and also increases the chip evacuation rate
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With and Without Internal Coolant Holes
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3 X D
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5 X D

- For General Purpose (HRc30 – HRc50)
- Special design for good centering, smooth chip removal and powerful drilling
- Special surface treatment after coating to reduce friction and better chip flow
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With Internal Coolant Holes (Drill Diameter = Shank Diameter)
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3 X D
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5 X D
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8 X D
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With Internal Coolant Holes (Drill Diameter = Shank Diameter)
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3 X D
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5 X D

- For Carbon Steels, Alloy Steels, and Cast Iron
- Increased productivity due to which is 1.5-2 times faster feeding speed than 2-flute carbide drill
- Multi-layer coating delivers improved productivity and reliability
- Self centering and chip breaking by R-Thinning and coolant holes
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With Internal Coolant Holes
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3 X D /
5 X D

- For holes on various angled surfaces.
- 180 degree point angle enables drilling of flat, inclined and curved surfaces.
- Optimized flute shape for excellent chip evacuation.
- High strength cutting edge to improve tool life and versatility drilling.
- For through holes, minimized burrs at entrance and exit when drilling thin plate.
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2 X D
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5 X D

- For Tough Materials like Stainless Steels, Nickel Alloys and Titanium
- Special flute shape and geometry for excellent chip removal
- Point R-thinning makes the superior centering and chip curl
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With Internal Coolant Holes
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3 X D
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5 X D
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8 X D

- For Aluminum and Aluminum Alloys
- Good chip treatment due to flute geometry & chip space
- Better finish & built-up edge prevention
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3 X D
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5 X D
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8 X D

- For composite materials including CFRP, GFRP
- Special Point Type improve hole quality for Composite material
- Long tool life and increased productivity by Diamond Coating
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5 X D

- Available for processing MQL(Minimum Quantity Lubrication)
- Flute Shape and Point Shape allowing better chip evacuation in deep hole drilling
- Excellent Coating and Surface Treatment for better performance and chip evacuation
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With Internal Coolant Holes
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10 X D
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15 X D
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20 X D
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25 X D
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30 X D

HARDENED STEEL For Hard Material, HRc 50~70 YG-1 tailored TiAlN-Coated Solid Carbide Drills View more
- For Hardened Materials (HRc 50~HRc70)
- Low Helix Angle to maximize tool’s rigidity
- Special Point Thinning to improve chip evacuation
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4 X D

- For Steels, up to Medium Hardness (~HRc30)
- Special design for good centering, smooth chip removal and powerful drilling
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5 X D
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7 X D

- For Multi Purpose
- Made from Premium powder metallurgy materials with Special point geometry, holds superb wear resistance and improved Hole Tolerance
- Better tool life with excellent coating
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STUB
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JOBBER

- Premium cobalt HSS with TiN coating drills for Steels and Stainless Steels
- High quality & good surface finish, high productivity
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HPD Drills for Steels
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STUB
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JOBBER
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HPD-SUS Drills for Stainless Steels
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STUB
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JOBBER

- Competitive price and same performance as full TiN coating
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D1GP103
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D1GP125
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D1GP165
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D2GP191
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DLGP195
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DLGP506

- For reaming holes after drilling
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CARBIDE, NC MACHINE REAMERS - STRAIGHT FLUTES
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CARBIDE, NC MACHINE REAMERS - LH SPIRAL FLUTES
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HSS, HAND REAMERS - STRAIGHT FLUTES
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HSS, HAND REAMERS - LH SPIRAL FLUTES
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HSS-E, STRAIGHT SHANK CHUCKING REAMERS - STRAIGHT FLUTES
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HSS-E, STRAIGHT SHANK CHUCKING REAMERS - LH SPIRAL FLUTES
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HSS-E, STRAIGHT SHANK CHUCKING REAMERS - LH SPIRAL FLUTES
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HSS-E, MORE TAPER SHANK CHUCKING REAMERS - STRAIGHT FLUTESS
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HSS-E, MORE TAPER SHANK CHUCKING REAMERS - LH SPIRAL FLUTES
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HSS-E, NC MACHINE REAMERS WITH WHOLE - NUMBER SHANK Ø

- Deburring
- Chamfering
- Countersinking
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HSS, DEBURRING TOOL with HOLE
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HSS, SINGLE FLUTE CHAMFERING CUTTERS
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HSS, THREE FLUTE COUNTERSKINS (60°)
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HSS, THREE FLUTE COUNTERSKINS (90°)
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HSS, THREE FLUTE COUNTERSKINS (120°)

- The counterbores with solid pilot are designed for machining as fillister screw caps or ejector caps in molds.
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3 FLUTE

- For removing sharp corners, burrs and fins etc.
- excellent performance
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CYLINDER SHAPE TYPE SA
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CYLINDER SHAPE WITH END CUT TYPE SB
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CYLINDER SHAPE WITH RADIUS END TYPE SC
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BALL SHAPE TYPE SD
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OVAL SHAPE TYPE SE
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TREE SHAPE WITH RADIUS END TYPE SF
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TREE SHAPE WITH POINTED END TYPE SG
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FLAME SHAPE TYPE SH
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60° CONE SHAPE TYPE SJ
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90° CONE SHAPE TYPE SK
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TAPER WITH RADIUS END TYPE SL
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CONE SHAPE TYPE SM
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INVERTED CONE SHAPE TYPE SN
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PRODUCT