12 best spotting drill bits
Spotting drill bits, also known as spot drills or center drills, are specialized cutting tools used in machining and metalworking. They serve a crucial role in the drilling process, particularly when precision and accuracy are essential. Here's what you need to know about spotting drill bits:
Purpose: Spotting drill bits are designed to create an initial hole or indentation at a specific point on a workpiece before drilling. This indentation serves as a precise starting point for the main drilling operation and helps prevent the drill bit from wandering or drifting off course.
Design: Spotting drill bits have a unique design compared to standard twist drill bits. They typically have a shorter overall length and a more rigid construction. The cutting end of a spotting drill bit has a conical or chamfered shape with a 90-degree angle.This chamfered tip provides a flat surface for the subsequent drill bit to make initial contact.
Materials: Spotting drill bits are often made from high-speed steel (HSS) or carbide to withstand the rigors of machining operations and maintain sharp cutting edges.
Application: Machinists and metalworkers use spotting drill bits primarily in metalworking applications. They are essential when accuracy in hole placement and perpendicularity is crucial, as in precision drilling operations.
Benefits: Using a spotting drill bit offers several advantages, including improved hole accuracy, reduced drill bit wander, and enhanced hole quality. It helps ensure that the main drill bit follows the intended path without deviation.
Centering: Spotting drill bits are also used to center a hole, which is particularly important when creating holes for threaded fasteners or other applications requiring precise alignment.
Operation: To use a spotting drill bit, it is typically mounted in a drill chuck or collet and brought into contact with the workpiece's surface at the desired drilling location. The operator then applies light pressure to create the indentation or chamfer. After spotting, a standard twist drill bit can be used to complete the drilling operation.
Size and Selection: Spotting drill bits come in various sizes, with the choice depending on the specific hole size and depth requirements of the job. The selection of the right spotting drill bit is crucial for achieving precise results.
Safety: Like all cutting tools, safety precautions should be taken when using spotting drill bits. Operators should wear appropriate protective gear, and the workpiece should be securely clamped to prevent movement during drilling.
Spotting drill bits play a critical role in precision machining and drilling applications. Their ability to create accurate starting points and ensure hole alignment is essential in industries where precision is paramount, such as aerospace, automotive, and manufacturing. Proper selection and use of spotting drill bits contribute to the overall quality and accuracy of machined components.
Below you can find our editor's choice of the best spotting drill bits on the market
KKmoon 7pcs M42 HSS High Speed Steel Cobalt Spotting Drill Bits Set Round Shank 90 Degree Drilling Chamfering Tool
KKmoon
- 7pcs spotting drills with 90 degree angle.
- With high temperature and abrasion resistance.
- Positioning and chamfering can be finished by one time.
- The holes made by these drills are not easy to cause edge breakage.
- High quality high speed steel drills have long service life.
User questions & answers
| Question: | will these drill through 1/4" hard steel? They look easy to sharpen.. are they |
| Answer: | Hi,Extension gate panels are available on Amazonhttps://www.amazon.com/dp/B01NCUVZFA or an ext gate with a door https://www.amazon.com/gp/product/B01N12DQPB |
| Question: | It says this can be used for chamfering, is this true? Could it do it in aluminum? I was going to buy a chamfer mill and a spot drill but maybe not |
| Answer: | This gate would not hold up against an aggressive dog or puppy who really really wants out. It did fine for our puppy but she is small and not very aggressive, although she has learned to nuzzle it open on the ends (luckily it had already done its job and we removed the panels) Large dog I would think you would want one that actually attaches to the wall. |
YG-1 - 0161L High Speed Steel NC Spotting Drill Bit, Uncoated (Bright), Straight Shank, Slow Spiral, 90 Degree, 1/4" Diameter x 2.76" Length (Pack of 1)
YG-1
Product description
NC spotting drill. 90 Degree point angle. Made of 8 percent cobalt and high speed steel. For more precise centering work on NC/CNC machine. A larger diameter in respect to the subsequent drilling tool permit to obtain the centering and chamfering simultaneously.
- NC spotting drill
- 90 Degree point angle
- Made of 8 percent cobalt and high speed steel
- For more precise centering work on NC/CNC machine
- A larger diameter in respect to the subsequent drilling tool permit to obtain the centering and chamfering simultaneously
User questions & answers
| Question: | having trouble finding this in 7/16th size. bought 1/8, 5/16, 3/8, 1/2 for future use...but need the 7/16th size asap. any leads |
| Answer: | Yes you can I connected 5 of the 4 panel units and 2 of the 2 panel extensions for a client and just ordered 2 more 4 panels for a different room he has very small dogs id say about 5 lbs each if that so these are great |
YG-1 - 0321L High Speed Steel NC Spotting Drill Bit, Uncoated (Bright), Straight Shank, Slow Spiral, 90 Degree, 1/2" Diameter x 4-1/64" Length (Pack of 1)
YG-1
Product description
NC spotting drill. 90 Degree point angle. Made of 8 percent cobalt and high speed steel. For more precise centering work on NC/CNC machine. A larger diameter in respect to the subsequent drilling tool permit to obtain the centering and chamfering simultaneously.
- NC spotting drill
- 90 Degree point angle
- Made of 8 percent cobalt and high speed steel
- For more precise centering work on NC/CNC machine
- A larger diameter in respect to the subsequent drilling tool permit to obtain the centering and chamfering simultaneously
Naiyong Tools 5 Lathe Mill CENTER DRILL COUNTERSINK Bit Tooling SET , M35 HSS 5 % Cobalit Contained , Titanium Plated (1-5 mm)
Naiyong
- TOP QUALITY CARBIDE MATERIAL: The center drill bit is made of HSS M35. Compared with ordinary high speed steel, M35 material can prolong the service life, enhance wear resistance and remove chippings clearly. HSSCO are harder and tougher than other materials.
- PLAIN STYLE 60°ANGLE: Center drill bit can be used to process the centering hole and countersink of general material. Plain style 60°angle can guide twist drill bits to process holes.
- SPIRAL FLUTE: Spiral groove helps clear chips and debris away from the bit, decreasing friction and heat for a faster, cooler drilling process. The precision ground surface is corrosion resistance to achieve better using effects and prolong the working life.
- WIDE APPLICATIONS: It is suitable for mold steel, carbon steel, cast iron, stainless steel, thread mold, a material with high hardness, wear-resistance and toughness for precise positioning before drilling, so as to facilitate the efficiency of subsequent drilling.
- SET INCLUDING & LIFETIME GUARANTEE: Total 5 pieces center bits(#1,#2,#3,#4,#5) with Box Package can be used to drill holes in different sizes. We stand behind all of our high quality products so we offer a lifetime No Question on our drill bits. Please contact us (through Amazon if past the standard return window) and we will be pleased to assist you.
User questions & answers
| Question: | For this drill set , can I use it for stainless steel ? Is it good quality |
| Answer: | Did you even try to read the specs? It clearly states in the first section "ideal for 45-60 inch doorways". |
| Question: | I have been looking for a good lathe drill set , but I am not sure of this product quality .what grade of it |
| Answer: | It is about 29 inches tall. |
| Question: | Will this work for titanium |
| Answer: | Yes. I love mine |
| Question: | Where is your product made in/manufactured |
| Answer: | No |
YG-1 - 2161L High Speed Steel NC Spotting Drill Bit, Uncoated (Bright), Straight Shank, Slow Spiral, 120 Degree, 1/4" Diameter x 2-97/128" Length (Pack of 1)
YG-1
Product description
NC spotting drill. 120 Degree point angle. Made of 8 percent cobalt and high speed steel. For more precise centering work on NC/CNC machine. A larger diameter in respect to the subsequent drilling tool permit to obtain the centering and chamfering simultaneously.
- NC spotting drill
- 120 Degree point angle
- Made of 8 percent cobalt and high speed steel
- For more precise centering work on NC/CNC machine
- A larger diameter in respect to the subsequent drilling tool permit to obtain the centering and chamfering simultaneously
YG-1 - 2241L High Speed Steel NC Spotting Drill Bit, Uncoated (Bright), Straight Shank, Slow Spiral, 120 Degree, 3/8" Diameter x 3-1/2" Length (Pack of 1)
YG-1
Product description
NC spotting drill. 120 Degree point angle. Made of 8 percent cobalt and high speed steel. For more precise centering work on NC/CNC machine. A larger diameter in respect to the subsequent drilling tool permit to obtain the centering and chamfering simultaneously.
- NC spotting drill
- 120 Degree point angle
- Made of 8 percent cobalt and high speed steel
- For more precise centering work on NC/CNC machine
- A larger diameter in respect to the subsequent drilling tool permit to obtain the centering and chamfering simultaneously
Roeam 7pcs M42 HSS High Speed Steel Cobalt Spotting Drill Bits Set Round Shank 90 Degree Drilling Chamfering Tool
Roeam
Product description
If you are looking for a set of spotting drill bits that both high quality and durable, this one is it. With features of high temperature and abrasion resistance, this set is more useful.
Features:
7pcs spotting drills with 90 degree angle.
With high temperature and abrasion resistance.
Positioning and chamfering can be finished by one time.
The holes made by these drills are not easy to cause edge breakage.
High quality high speed steel drills have long service life.
Specifications:
Material: M42
Drill Dia: 3mm / 4mm / 5mm / 6mm / 8mm / 10mm / 12mm
Package Size: 11.5 * 14 * 1.5cm / 4.53 * 5.51 * 0.59in
Package Weight: 198g / 7oz
Package List:
7 * Drill Bits
- 7pcs spotting drills with 90 degree angle.
- With high temperature and abrasion resistance.
- Positioning and chamfering can be finished by one time.
- The holes made by these drills are not easy to cause edge breakage.
- High quality high speed steel drills have long service life.
Cobra Carbide 31910 Micro Grain Solid Carbide N/C Spotting Drill Bit, Uncoated (Bright) Finish, Round Shank, Spiral Flute, 120 Degrees Split Point, 1/4" Size, 2-1/2" Length (Pack of 1)
Cobra Carbide
Product description
Cobra Carbide 2 flute N/C spotting general drill bit is manufactured from premium submicron level carbide grain. Ideal for chamfering or spot drilling. For centering and countersinking on NC and CNC Machines. Solid carbide tools offer long tool life and faster cutting speeds than other substrates, but are more brittle and must be used with rigid toolholding systems. Round shanks allow use with a wide variety of toolholding systems. When run in a counterclockwise direction (right-hand cut) spiral fluted tools evacuate chips up and out of the cut to reduce clogging. 120 degrees point angle. Tolerance: H6 - shank diameter; H7 - cut diameter.
- Solid carbide tools offer long tool life and faster cutting speeds than other substrates, but are more brittle and must be used with rigid toolholding systems
- Uncoated tools feature just the base substrate without any additional treatment or coatings and are suitable for a wide range of applications
- Round shanks allow use with a wide variety of toolholding systems
- When run in a counterclockwise direction (right-hand cut) spiral fluted tools evacuate chips up and out of the cut to reduce clogging
- For centering and countersinking on NC and CNC machines
Cobra Carbide 31908 Micro Grain Solid Carbide General N/C Spotting Drill Bit, Uncoated (Bright) Finish, Round Shank, Spiral Flute, 90 Degrees Split Point, 1/4" Size, 2-1/2" Length (Pack of 1)
Cobra Carbide
Product description
Cobra Carbide 2 flute N/C spotting general drill bit is manufactured from premium submicron level carbide grain. Ideal for chamfering or spot drilling. For centering and countersinking on NC and CNC Machines. Solid carbide tools offer long tool life and faster cutting speeds than other substrates, but are more brittle and must be used with rigid toolholding systems. Round shanks allow use with a wide variety of toolholding systems. When run in a counterclockwise direction (right-hand cut) spiral fluted tools evacuate chips up and out of the cut to reduce clogging. 90 degrees point angle. Tolerance: H6 - shank diameter; H7 - cut diameter.
- Solid carbide tools offer long tool life and faster cutting speeds than other substrates, but are more brittle and must be used with rigid toolholding systems
- Uncoated tools feature just the base substrate without any additional treatment or coatings and are suitable for a wide range of applications
- Round shanks allow use with a wide variety of toolholding systems
- When run in a counterclockwise direction (right-hand cut) spiral fluted tools evacuate chips up and out of the cut to reduce clogging
- For centering and countersinking on NC and CNC machines
KEO 32345 Cobalt Steel NC Spotting Drill Bit, Uncoated (Bright) Finish, Round Shank, Right Hand Flute, 90 Degree Point Angle, 3/4" Body Diameter, 8" Overall Length
Keo
Product description
KEO NC spotting drills are designed with a narrow chisel edge for quick star ting and a constant web to allow for resharpening without the need for web thinning. Cobalt steel tools are similar to high-speed steel, but with more cobalt for improved performance when cutting harder metals such as stainless steel or nickel alloys. Uncoated tools feature just the base substrate without any additional treatment or coatings and are suitable for a wide range of applications. Round shanks allow use with a wide variety of toolholding systems. When run in a counterclockwise direction (right-hand cut) spiral fluted tools evacuate chips up and out of the cut to reduce clogging. Right-hand cut tools have a cutting action that engages when they are run in a clockwise direction.
- Cobalt steel tools are similar to high-speed steel, but with more cobalt for improved performance when cutting harder metals such as stainless steel or nickel alloys
- Uncoated tools feature just the base substrate without any additional treatment or coatings and are suitable for a wide range of applications
- Round shanks allow use with a wide variety of toolholding systems
- When run in a counterclockwise direction (right-hand cut) spiral fluted tools evacuate chips up and out of the cut to reduce clogging
- Right-hand cut tools have a cutting action that engages when they are run in a clockwise direction
ZXHAO HSS 3.5mm(9/64") Tip Diameter Center Spotting Drill Bit Countersinks 10pcs
ZXHAO
Product description
Product Contain: 10pcs Center Drill Bits
Drill accurate center holes in material prior to turning, or use as a starter bit for accurate holes.
Used for producing center holds in components or work pieces with require machining between centers
Due to manual measurement, and production, the batch is not the same, size, weight, color, there will be a certain error, error within 2% of the normal situation.
SOMETHING ABOUT US- ZXHAO have the customers satisfaction for their first priority. If you have any questions,please feel free to contact us by mail FIRST. We will offer our best service for you.
- Designed to prevent the twist drill from walking ; Material : High Speed Steel
- Total Length : 50mm 1-31/32 inch;Tip Diameter : 3.5mm 9/64 inch; Shaft Diameter : 8mm 5/16 inch
- Available for all Kinds of Materials: Metal, Alloy, Copper, Iron, Wood, Aluminum, and so on.
- Straight shank design is more suitable for many electric drills and drilling machines.
- Function: Used to guide the hole processing of the drill and reduce the error, good for accurate holes.
KEO 34180 Solid Carbide High Performance NC Spotting Drill Bit, TiN Coated, Round Shank, Right Hand Flute, 90 Degree Point Angle, 1/8" Body Diameter, 1-1/2" Overall Length
Keo
Product description
KEO NC spotting drills are designed with a narrow chisel edge for quick star ting and a constant web to allow for resharpening without the need for web thinning. Solid carbide tools offer long tool life and faster cutting speeds than other substrates, but are more brittle and must be used with rigid toolholding systems. Titanium nitride coatings add a hard layer of gold-colored ceramic to the surface that extends tool life and permits faster cutting speeds than uncoated tools. Round shanks allow use with a wide variety of toolholding systems. When run in a counterclockwise direction (right-hand cut) spiral fluted tools evacuate chips up and out of the cut to reduce clogging. Right-hand cut tools have a cutting action that engages when they are run in a clockwise direction.
- Solid carbide tools offer long tool life and faster cutting speeds than other substrates, but are more brittle and must be used with rigid toolholding systems
- Titanium nitride coatings add a hard layer of gold-colored ceramic to the surface that extends tool life and permits faster cutting speeds than uncoated tools
- Round shanks allow use with a wide variety of toolholding systems
- When run in a counterclockwise direction (right-hand cut) spiral fluted tools evacuate chips up and out of the cut to reduce clogging
- Right-hand cut tools have a cutting action that engages when they are run in a clockwise direction
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