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BRA, BRL

CUTTING RESISTANCE Workpiece : DIN 42CrMo4(200HB) Cutting Speed : 60m/min
Power Consumption Torque Thrust Reason for Low Thrust Load

IDENTIFICATION FOR BRA AND BRL	TOP

1.Drill Type

Type	Description						Applications	Products Name
	Point Angle	Hole Depth	Helix Angle	Relief Angle	Back Taper	Body Dia.
BRA	150°	3－4D	20°	10°	0.3mm/100mm	øD-0.2mm	For General Use (Carbon / Alloy /Stainless Steel)	BRAS
BRL	150°	3－4D	10°+ Straight	10°	1.0mm/100mm	øD-1.0mm	For Turning	BRLSL

2.Shank Size

Type	Shank Diameter	Drill Diameter
S16	ø16(h6)	ø8.0 ≤D≤ø14.5
S20	ø20(h6)	ø14.5< D ≤ø18.5
S25	ø25(h6)	ø18.5< D ≤ø23.5
S32	ø32(h6)	ø23.5< D ≤ø30.5
S40	ø40(h6)	ø30.5<D ≤ø40.0

3.Honing Type

Type	Honing Width (mm)	Workpiece
		BRA	BRL
- (standard)	0.15－0.2	Carbon Steel, Alloy Steel, Mild Steel	Carbon Steel(≥200HB),Alloy Steel, Stainless Steel
S	0.2－0.25	－	Carbon Steel(≤200HB)
M	0.25－0.3	－	High Tension Steel. Rolled Steel for Welded Structures
L	0.3－0.4	－	Mild Steel
H	0.05－0.1	Stainless Steel, Heat Resistant Alloy, Titanium Alloy	－
G	0.025－0.08	Cast Iron, Aluminium Alloy, Non Ferrous Metals	Cast Iron