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Technical Information
SG Drills
SG Drills with End Mill Shank
Improved Drills for Improved Performance made from Premium Powder HSS with Composite Multi- Layer SG Coating.
Cut down the procces and save machining time
dramatically to 20%
• Extremely precise positioning
• Stable drilled hole diameter
• Reduced drilling cycle via high speed and feed
Centering Drilling by one SG-ESS Drill
Reaming
Center Drills
Centering Drilling
SG-ESS Drill
7 sec.
Drills
35 sec.
Semi-Finish Reamers Reaming
Tool life is 2 to 3 times longer than TiN Coated Drills.
Transition of Hole Diameter
1.7225 42CrMo4
Positioning Accuracy
μm 50
40 30 20 10
0
Others (TiN coated)
SG-ESS
800 1000 1200 1400 Number of Holes
200 400 600
SG-ESS Drill
8
–x=927
Other TiN-coated Drill
Number of Holes
x=415
–
Drill Dia Material Depth Speed Feed Coolant
: 7mm
: 1.7225 42CrMo4
: 16mm
: 26.4m/min (1200rpm)
: 240mm/min (0.2mm/rev) : Emulsion
Ø 12
μm 100
50 20
SG-ESS HSS
Oversize
20