Tungsten Carbide Nc Center Spot Drilling Bit, Cemented Hss Spot Drill Fixed Point Aluminum Solid Carbide Drill Bits, High Speed Steel 2 Flute Right Hand Cut Nc Spot Drill Bit 90° Point, HSS M42 Bit Spotting Drills with 90 Degree Angle, 120° HSS-COBALT SPOT DRILL SET 6, 8, 10, 12mm, Nc Spot Drill Hss Carbide Stub Center Bits 60 90 120 Degree, Carbide Spot Drill NC Spotting Drill Set, Woodworking Metalworking & Multipurpose Drill Bits China Supplier Factory
Tungsten Carbide Nc Center Spot Drilling Bit Specifications
Flute Number 2/3/4
Application Steel .Stainless Steel
Type Center Drill Bit
Material Tungsten Carbide
Usage Wood Drilling, Well Drilling, PCB Drilling, Metal Drilling, Masonry Drilling, Metal Processing
Standard ISO9001:2015
Length Customized
HRC 55/65
Density 14.45-14.90g/cm3
Transport Package Carton
Specification Customized
Customized Support OEM, ODM
Choosing a Drilling Location
Ideally, the centre of a carbide drill should always make contact with your component first. As a result, the tip angle of a spotting drill should be somewhat more significant than your drill’s. If you use a spotting drill with a more minor point angle than your drill, the outside section of its cutting surface may be damaged owing to shock loading when it makes contact with the workpiece before the centre. An acceptable situation is to use a drill angle equal to the drill angle.
Marking Your Spot
A Spotting Drill aims to make a tiny divot to precisely pinpoint the centre of a drill while starting a plunge. However, some machinists use these tools for a different purpose — chamfering the top of drilled holes. When screw heads are placed, they sit flush with the component due to the chamfer.
Drills made of solid carbide
Solid carbide drills are a fantastic choice for process security, manufacturing economy, and hole quality. They offer the optimum balance of penetration rate and accuracy. This extensive solid carbide drill product line comprises micro, adaptable, optimized, and deep hole drills.
Is it necessary to spot-drill carbide drills?
Its function is to guarantee that the hole is precisely situated. The brief spot exercise is quite stiff, and the spotting action is unlikely to deviate. When using a carbide drill or a screw machine length drill, spotting is usually unnecessary.
What Happens If I Use an Incorrect Angle on a Spot Drill? 142 DEG M35 TiN NC SPOTTING DRILL BITS
By directing the tip of the drill to the centre, a more significant angle drill will locate the proper spot. If the outside diameter of a carbide drill makes first contact with the workpiece, the tool may chip. It would cause damage to the workpiece and result in a faulty tool. If the drill’s two flutes were slightly different, one might come in contact before the other. It might result in an incorrect hole, defeating the point of spot drilling in the first place.
These Coolant Fed Carbide Drill Bits have new chip curling design to enable chip breakage 120 DEG. TiN HSS-E 8% Cobalt M42 Spot Drill Bit
At least 15-Bar of Coolant Pressure is recommended for best of use of these Carbide Drills
These Coolant Fed Carbide Drill Bits are best suited for drilling MS, Alloy Steel, Cast Iron up to 450BHN, Stainless Steel
These Coolant Fed Carbide Drill bits comes with Edge Chamfer & edge preparation for longer drill life
These Carbide Cutting Tools Comes with newly developed NOVA Coating for higher Vc and Feed rates to improve your productivity 120° Long Series Spot Drill Bit Carbide (K15)
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SIZE
|
Diameter
|
Total Length
|
Flute Length
|
Cutting Angle
|
|
3.0
|
3
|
46
|
12
|
60° / 90° / 120°
|
|
4.0
|
4
|
55
|
14
|
60° / 90° / 120°
|
|
5.0
|
5
|
62
|
16
|
60° / 90° / 120°
|
|
6.0
|
6
|
66
|
18
|
60° / 90° / 120°
|
|
7.0
|
7
|
70
|
20
|
60° / 90° / 120°
|
|
8.0
|
8
|
79
|
22
|
60° / 90° / 120°
|
|
9.0
|
9
|
84
|
24
|
60° / 90° / 120°
|
|
10.0
|
10
|
89
|
26
|
60° / 90° / 120°
|
|
11.0
|
11
|
95
|
28
|
60° / 90° / 120°
|
|
12.0
|
12
|
102
|
30
|
60° / 90° / 120°
|
|
13.0
|
13
|
102
|
32
|
60° / 90° / 120°
|
