NC centre drill solid carbide 90° - DRL-SPRL-MET-NC90-SC-D20,0MM

NC centre drill solid carbide 90°

Name: NC centre drill solid carbide 90°
Brand: Würth
SKU: 5443002758

Centre drill NC 90° solid carbide WN
DRL-SPRL-MET-NC90-SC-D20,0MM

Art.-no. 5443002758

EAN 4055375891476

All versions

Specification

Special drill bit for especially precise and rapid spot drilling on NC machines, jig boring machines etc. For centring and chamfering threaded drill holes.

Technical information


Product code	6225
Material to be processed	Steel, Cast metal, Stainless steel, Copper, Brass, Plastic
Standards	CS
Oberfläche	Plain
Schneidstoff	SC
Angle of the tip	90 Degree
Number of cutting edges	2 PCS
Diamètre (d1)	20 mm
Shank style	Cylindrical
Länge (l1)	131 mm
Chip flute length (l2)	45 mm
Shank diameter (d2)	20 mm
Tolerance of cutting edge diameter	h6
Tolerance of shank diameter	h6
Werkstoffuntergruppe	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

Cutting values for solid carbide drill bits, uncoated
For dia. 4 - dia. 20
Material designation	Tensile strength	Cooling	v_c		f
			from	to	Dia. 4-5.9	Dia. 6-8.9	Dia. 9-11.9	Dia. 12-15.9	Dia. 16-20
General structural steels	< 500 N/mm²	E	60	75	0,100	0,140	0,170	0,230	0,288
General structural steels	500-850 N/mm²	E	60	75	0,100	0,140	0,170	0,230	0,288
Carbon steels	< 850 N/mm²	E	60	75	0,100	0,140	0,170	0,230	0,288
Carbon steels	850-1000 N/mm²	E	55	65	0,100	0,140	0,170	0,230	0,288
Unalloyed heat-treated steels	< 700 N/mm²	E	60	75	0,100	0,140	0,170	0,230	0,288
	700-850 N/mm²	E	60	75	0,100	0,140	0,170	0,230	0,288
	850-1000 N/mm²	E	55	65	0,090	0,120	0,150	0,200	0,250
Alloyed heat-treated steels	850-1000 N/mm²	E	55	65	0,090	0,120	0,150	0,200	0,250
Alloyed heat-treated steels	1000-1200 N/mm²	E	50	60	0,090	0,120	0,150	0,200	0,250
Unalloyed case-hardening steels	< 750 N/mm²	E	60	75	0,090	0,120	0,150	0,200	0,250
Alloyed case-hardening steels	< 1000 N/mm²	E	55	65	0,090	0,120	0,150	0,200	0,250
Alloyed case-hardening steels	1000-1200 N/mm²	E	50	60	0,090	0,120	0,150	0,200	0,250
Nitriding steels	< 1000 N/mm²	E	55	65	0,080	0,110	0,140	0,180	0,225
Nitriding steels	1000-1200 N/mm²	E	50	60	0,080	0,110	0,140	0,180	0,225
Tool steels	< 850 N/mm²	E	55	65	0,080	0,110	0,140	0,180	0,225
	850-1100 N/mm²	E	50	60	0,080	0,110	0,140	0,180	0,225
	1100-1400 N/mm²	E	30	40	0,080	0,110	0,140	0,180	0,225
High-speed steels	850-1200 N/mm²	E	30	40	0,080	0,110	0,140	0,180	0,225
Wear-resistant constructional steel	1350 N/mm²	E	20	35	0,080	0,110	0,140	0,180	0,225
Spring steels	< 1200 N/mm²	E	20	35	0,080	0,110	0,140	0,180	0,225
Stainless steels, sulphurated	< 700 N/mm²	E	30	40	0,090	0,120	0,150	0,200	0,250
Stainless steels, austenitic	< 700 N/mm²	E	30	40	0,090	0,120	0,150	0,200	0,250
Stainless steels, austenitic	< 850 N/mm²	E	25	35	0,090	0,120	0,150	0,200	0,250
Stainless steels, martensitic	< 1100 N/mm²	E	25	35	0,090	0,120	0,150	0,200	0,250
Special alloys	< 1200 N/mm²	E	15	25	0,080	0,110	0,140	0,180	0,225
Cast iron	< 180 HB	T/E	70	100	0,090	0,130	0,160	0,210	0,263
Cast iron	> 180 HB	T/E	70	100	0,090	0,130	0,160	0,210	0,263
Nodular graphite, malleable iron	> 180 HB	E	65	75	0,090	0,120	0,150	0,200	0,250
Nodular graphite, malleable iron	> 260 HB	E	65	75	0,090	0,120	0,150	0,200	0,250
Aluminium, aluminium alloys	< 530 N/mm²	E	150	220	0,100	0,140	0,170	0,230	0,288
Aluminium, cast aluminium alloys < 10 % Si	< 600 N/mm²	E	100	180	0,100	0,140	0,170	0,230	0,288
Aluminium, cast aluminium alloys > 10 % Si	< 600 N/mm²	E	100	180	0,100	0,140	0,170	0,230	0,288
Magnesium, magnesium alloys	< 280 N/mm²	E	150	220	0,100	0,140	0,170	0,230	0,288
Copper, low-alloy	< 350 N/mm²	E	100	180	0,100	0,140	0,170	0,230	0,288
Brass, short-chipping	< 600 N/mm²	E	100	180	0,100	0,140	0,170	0,230	0,288
Brass, long-chipping	< 600 N/mm²	E	100	180	0,100	0,140	0,170	0,230	0,288
Bronze, short-chipping	< 600 N/mm²	E	100	180	0,100	0,140	0,170	0,230	0,288
Bronze, short-chipping	650-850 N/mm²	E	100	180	0,100	0,140	0,170	0,230	0,288
Bronze, long-chipping	< 850 N/mm²	E	90	140	0,090	0,130	0,160	0,210	0,263
Bronze, long-chipping	850-1200 N/mm²	E	90	140	0,090	0,130	0,160	0,210	0,263
Graphite		T	70	100	0,090	0,130	0,160	0,210	0,263

Legend
E = emulsion
T = dry
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.