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Carbide Drills List of Drill Geometry by Type, Features by Specifications

List of Drill Geometry by Type

Model Number	Diameter Tolerance	Torsion Angle	Tip Angle	Thinning	Relief Surface	Cutting Blade
TSC-DL-ESDB / TSC-DL-ESDR	h7	Composite Spiral	145	X Shape	Three-Rake	Wave
TAC-BNESDBA	js6	Standard	140	R Shape	Three-Rake	Wave
TAC-HBNESDR	js6	Standard	140	R Shape	Three-Rake	Wave
TAC-ESD3FB / TAC-ESD3FRA	h6	Standard	140	Special S-type	Three-Rake	Wave
TAC-WMESDRA	h6	Standard	140	R Shape	Three-Rake	Wave
TAC-RFESDB / TAC-RFESDRA	h6	Standard	140	R Shape	Three-Rake	Wave
TAC-CR-RFESDBA / TAC-CR-RFESDRA	h7	Standard	140	R Shape	Three-Rake	Wave
TAC-CR-RFSDB / TAC-CR-RFSDR	h7	Standard	140	R Shape	Three-Rake	Wave
TAC-RESDBA / TAC-RESDRA	m7	Standard	140	R Shape	Conical	Wave
TAC-HRESDB / TAC-HRESDR	m7	Standard	140	R Shape	Conical	Wave
TAC-RSDB / TAC-RSDR	m7	Standard	140	R Shape	Conical	Wave
TAC-MS-ESDR	h7	Standard	140	None	Three-Rake	Straight Line
TAC-ESDB / TAC-ESDR	h8	Standard	140	None	Three-Rake	Straight Line
TAC-ESDBA / TAC-ESDRA	h8	Standard	140	X Shape	Three-Rake	Straight Line
TAC-HESDB / TAC-HESDR	h8	Standard	140	X Shape	Three-Rake	Straight Line
TAC-SDB / TAC-SDS	h7	Standard	118	S-Shape	Three-Rake	Straight Line
C-SDB / C-SDS	h7	Standard	118	S-Shape	Three-Rake	Straight Line
TSC-CR-XESDR	h7	Weak	140	X Shape	Three-Rake	Straight Line
TSC-XESDR / TSC-XESDM	h8	Weak	140	X Shape	Three-Rake	Straight Line
TSC-XSDR / TSC-XSDM	h8	Weak	140	X Shape	Three-Rake	Straight Line
TSC-MS-XESDB / TSC-MS-XESDR	m7	Standard	140	X Shape	Three-Rake	Straight Line
TAC-DL-SESDR	h7	Composite Spiral	125	X Shape	Three-Rake	Wave
DLC-DL-ALESDR	h7	Composite Spiral	120	X Shape	Three-Rake	Wave
DLC-ALESDR	h8	Strong	130	X Shape	Three-Rake	Straight Line
SEC-PLSDB	h8	Standard	-	-	-	-
TAC-FCESD3R	m7	Standard	130	R Shape	Conical	Wave
TAC-SDXL / TAC-HSDXL	h8	Strong	130	S Shape (for Deep Hole)	Conical	Straight Line
TAC-ESD2LB	h8	Standard	140	X Shape	Three-Rake	Straight Line
TSC-XESD2LB	h8	Weak	140	X Shape	Three-Rake	Straight Line
TAC-SC-SDR	h8	Standard	140	X Shape	Three-Rake	Straight Line
TAC-SF-SDR	h8	Standard	140	X Shape	Three-Rake	Straight Line
DLC-SC-SDR / DLC-SF-SDR	h8	Strong	130	X Shape	Three-Rake	Straight Line

Features By Drill Specifications

■ Diameter Tolerance
Title image sample

★ Advantages of Plus Tolerance
・ Drills can be used at a hole tolerance of about H9 without the need for a reamer.
・ When drilling pilot holes for deep holes, setting a hole diameter with a plus tolerance allows highly precise guide holes to be drilled.
・ Tapping costs can be reduced and the durability of taps can be improved by setting a hole diameter with a plus tolerance when drilling pilot holes for taps.
・ Hole diameter minus values following regrinding can be reduced and limited.
Title image sample

■ Torsion Angle

■ Tip Angle