High Quality Hss Center Drill 5/ 3/ 2.5/ 2/ 1.5/ 1mm Bits

High Quality Hss Center Drill 5/ 3/ 2.5/ 2/ 1.5/ 1mm Bits, Hss Centre Drill A B R Type High Speed Steel For Industrial, HSS Cobalt Center Drill Bit for Centre Drilling, Solid Carbide HSS Central Drill Bit, M2 HSS 60° Angle Center Drill Bits Kit Countersink Tools, Carbide Center Drills, High-Speed Steel Center Drills, Center Drill Countersink Set, Woodworking Metalworking & Multipurpose Drill Bits China Supplier Factory

High Quality Hss Center Drill 5/ 3/ 2.5/ 2/ 1.5/ 1mm Bits  Specifications
*Material: HSS
*Type:Double ended
*Color: Silver (as picture shows)
*Size:5/3/2.5/2/1.5/1mm
*Each of the following sizes optional:
# 1 with 3mm body diameter & 1mm drill tip diameter
# 2 with 4mm body diameter & 1.5mm drill tip diameter
# 3 with 5mm body diameter & 2mm drill tip diameter
# 4 with 6mm body diameter & 2.5mm drill tip diameter
# 5 with 8mm body diameter & 3mm drill tip diameter
# 6 with 12mm body diameter & 5mm drill tip diameter
Packaging Features Drilling tool steel, cast iron, aluminum alloy, copper, steel plate, stainless steel

60° tapered holes are machining reference centres
120° bevel ensures that the centre datum is protected from damage.
120° opening angle makes it easier for automatic feeds to enter the cutting position
Ensures smoother next machining process
Mainly used for precision workpiece machining
*Made of material, and practical to use
*Each drill has a double end and is ground with a standard 60 degree angle.
*Center and spotting drills are traditionally used to make a conical hole for a lathe center in orderto make a starting point for a standard drill, designed to prevent the drill from walking.
*Used for producing center holds in components or work pieces with require machining between centers. 7 Pcs 60-Degree Angle HSS Centre Drill Bits Set for Metalworking

Features
1.Center drill bits can be used to make conical holes for a lathe center in order to make a starting point for a standard twist drill, designed to prevent the twist drill from walking, as well as for producing center holds in components or work pieces with require machining between centers.
2.Available for all Kinds of Materials: Metal, Alloy, Copper, Iron, Wood, Aluminum, and so on.
3.Durable and Resistance: Center drill bit is made of HSS high speed steel, with extremely sharp blade, low consumption and durable with impact resistance, wear resistance. HSS Centre Drill Bits Set (1.6mm, 2mm, 2.5mm, 3.15mm, 4mm, 5mm)
4.center drills have flutes and cutting points on both ends. this allows the user with the ability to reverse the drill and utilize both ends.
5.Easy cutting with high speed and excellent offtake of chips.suitable for products with straight flute,oblique flute and spiral fiute,etc.
6.60 degree countersink angle fits all standard centers
7.High-speed steel tools are good for most general purpose applications, offering a combination of hardness and toughness for wear resistance Double-Sided High Speed Steel M2 Titanium Drill Bits Set 10-Pieces

Center drill bits, also known as Slocombe drill bits, are used in metalworking to provide a starting hole for a larger-sized drill bit or to make a conical indentation in the end of a workpiece in which to mount a lathe center. In either use, the name seems appropriate, as the bit is either establishing the center of a hole or making a conical hole for a lathe center. Nevertheless, because of the frequent lumping together of both the terminology and the tool use, suppliers may call center drill bits combined-drill-and-countersinks in order to make it unambiguously clear what product is being ordered. Double-Ended High-Speed Steel Drill Bits Drilling Tools Set

The drill bit is mainly made of M35, M2 steel, sturdy, heat resistant and wear resistant, which is reliable and will serve for a long time; The cutting operation of the bits is accurate because of the hardened and honed cutting edge, no worry about shaking.
Double Ended Twist Design: there are 2 cutting points for each drill bit, you can apply the drill bit separately by every end, promoting the number of drilling holes; The drills adopt a 135 degree split point and twist design, which will increase cutting speed and make drilling precise.  Double-Ended High-Speed Steel Drill Bits Drilling Tools Set

 

 

Type A HSS Center Drill
d	D	L	I
1.00	3.15	33.50	1.90
1.25	3.15	33.50	1.90
1.60	4.00	37.50	2.80
2.00	5.00	42.00	3.30
2.50	6.30	47.00	4.10
3.15	8.00	52.00	4.90
4.00	10.00	59.00	6.20
5.00	12.50	66.00	7.50
6.30	16.00	74.00	9.20
Type B HSS Center Drill
d	D	L	I
1.00	4.00	37.50	1.90
1.25	5.00	42.00	2.20
1.60	6.30	47.00	2.80
2.00	8.00	52.00	3.30
2.50	10.00	59.00	4.10
3.15	11.20	63.00	4.90
4.00	14.00	70.00	6.20
5.00	18.00	78.00	7.50
6.30	20.00	83.00	9.20
Type R HSS Center Drill
d	D	L	I
1.00	3.15	33.50	3.00
1.25	3.15	33.50	3.35
1.60	4.00	37.50	4.25
2.00	5.00	42.00	5.30
2.50	6.30	47.00	6.70
3.15	8.00	52.00	8.50
4.00	10.00	59.00	10.60
5.00	12.50	66.00	13.20
6.30	16.00	74.00	17.00

Other specification is also available according to your requirements. (OEM, ODM )
Pls. contact us freely for more information, I will reply you ASAP!