SC twist drill bit DIN 6537K - DRL-TWST-DIN6537K-UV-SC-TNS-HA-D6,8MM

SC twist drill bit DIN 6537K

Name: SC twist drill bit DIN 6537K
Brand: Würth
SKU: 5443000524

Twist drill SD DIN 6537K type N TiAlN-S Uni
DRL-TWST-DIN6537K-UV-SC-TNS-HA-D6,8MM

Art.-no. 5443000524

EAN 4055375900345

All versions

Specification

For universal applications. High robustness and universal application owing to straight main cutter. Special grinding ensures optimal chip breakage, high centring accuracy and low cutting forces.

Technical information


Product code	6727
Material to be processed	Steel, Cast metal, Stainless steel, Copper, Brass, Aluminium, Plastic
Standards	DIN 6537
Design	Short
Surface	TiAlN-S
Max. drilling depth (D)	3xD
Cutting material	SC
Number of guiding chamfers	2 PCS
Angle of the tip	140 Degree
Number of cutting edges	2 PCS
Coolant supply	External
Diameter (d1)	6.8 mm
Shank style	Cylindrical DIN 6535-HA
Length (l1)	79 mm
Chip flute length (l2)	34 mm
Tolerance of cutting edge diameter	h7
Shank diameter (d2)	8 mm
Tolerance of shank diameter	h6
Material of sub-group	General structural steels, Non-alloyed tempering steels < 1000 N/mm², Alloyed tempering steels < 1000 N/mm², Nitriding steels < 1300 N/mm², Grey cast iron, Malleable cast iron, Stainless steels < 850 N/mm², Stainless steels > 850 N/mm², Copper, Brass, Aluminium, Plastics

Legend
T = dry
E = emulsion
v_c = cutting speed [m/min]
f = feed [mm/r]
The suggested cutting values are reference values and must be adapted to the respective conditions.

Cutting values for solid carbide high-performance drill Speeddrill, 3xd1 without internal cooling
For dia. 1 to dia. 8.9
Material designation	Tensile strength	Cooling	v_c	f
				Dia. 1 to dia. 1.9	Dia. 2 to dia. 2.9	Dia. 3 to dia. 5.9	Dia. 6 to dia. 8.9
General structural steels	< 500 N/mm²	E	105	0,06	0,09	0,16	0,22
General structural steels	500-850 N/mm²	E	90	0,06	0,09	0,16	0,22
Machining steels	< 850 N/mm²	E	105	0,06	0,09	0,16	0,22
Machining steels	850-1000 N/mm²	E	90	0,06	0,09	0,16	0,22
Unalloyed heat-treated steels	< 700 N/mm²	E	85	0,05	0,08	0,15	0,21
	700-850 N/mm²	E	85	0,05	0,08	0,15	0,21
	850-1000 N/mm²	E	85	0,03	0,05	0,08	0,12
Alloyed heat-treated steels	850-1000 N/mm²	E	85	0,03	0,05	0,08	0,12
Alloyed heat-treated steels	1000-1200 N/mm²	E	80	0,03	0,05	0,08	0,12
Non-alloyed case-hardening steels	< 750 N/mm²	E	100	0,06	0,09	0,16	0,22
Alloyed case-hardening steels	< 1000 N/mm²	E	90	0,06	0,09	0,16	0,22
Alloyed case-hardening steels	1000-1200 N/mm²	E	85	0,05	0,08	0,15	0,21
Nitriding steels	< 1000 N/mm²	E	85	0,03	0,05	0,08	0,12
Nitriding steels	1000-1200 N/mm²	E	85	0,03	0,05	0,08	0,12
Tool steels	< 850 N/mm²	E	65	0,03	0,05	0,08	0,12
Tool steels	850-1100 N/mm²	E	55	0,03	0,05	0,08	0,12
Spring steels	< 1200 N/mm²	E	45	0,03	0,05	0,08	0,12
Cast iron	< 180 HB	T/E	120	0,08	0,13	0,20	0,25
Cast iron	> 180 HB	T/E	100	0,08	0,13	0,20	0,25
Spheroidal graphite, malleable iron	> 180 HB	E	100	0,05	0,08	0,13	0,18
Spheroidal graphite, malleable iron	> 260 HB	E	95	0,05	0,08	0,13	0,18

Cutting values for solid carbide high-performance drill Speeddrill, 3xd1 without internal cooling
For dia. 9 to dia. 20
Material designation	Tensile strength	Cooling	v_c	f
				Dia. 9 to dia. 11.9	Dia. 12 to dia. 15.9	Dia. 16 to dia. 20
General structural steels	< 500 N/mm²	E	105	0,28	0,34	0,40
General structural steels	500-850 N/mm²	E	90	0,28	0,34	0,40
Machining steels	< 850 N/mm²	E	105	0,28	0,34	0,40
Machining steels	850-1000 N/mm²	E	90	0,28	0,34	0,40
Unalloyed heat-treated steels	< 700 N/mm²	E	85	0,27	0,32	0,38
	700-850 N/mm²	E	85	0,27	0,32	0,38
	850-1000 N/mm²	E	85	0,15	0,20	0,26
Alloyed heat-treated steels	850-1000 N/mm²	E	85	0,15	0,20	0,26
Alloyed heat-treated steels	1000-1200 N/mm²	E	80	0,15	0,20	0,26
Non-alloyed case-hardening steels	< 750 N/mm²	E	100	0,28	0,34	0,40
Alloyed case-hardening steels	< 1000 N/mm²	E	90	0,28	0,34	0,40
Alloyed case-hardening steels	1000-1200 N/mm²	E	85	0,27	0,32	0,38
Nitriding steels	< 1000 N/mm²	E	85	0,15	0,20	0,26
Nitriding steels	1000-1200 N/mm²	E	85	0,15	0,20	0,26
Tool steels	< 850 N/mm²	E	65	0,15	0,20	0,26
Tool steels	850-1100 N/mm²	E	55	0,15	0,20	0,26
Spring steels	< 1200 N/mm²	E	45	0,15	0,20	0,26
Cast iron	< 180 HB	T/E	120	0,35	0,40	0,46
Cast iron	> 180 HB	T/E	100	0,35	0,40	0,46
Spheroidal graphite, malleable iron	> 180 HB	E	100	0,23	0,30	0,36
Spheroidal graphite, malleable iron	> 260 HB	E	95	0,23	0,30	0,36