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Center Drill

Your Professional Center Drill Supplier

Our goal is to become your true partner in the field of center drill in China. Zhuzuan (Chongqing) CNC Tool Co., Ltd. is a professional enterprise engaged in the research and development, production, and sales of CNC cutting tools. We have a skilled engineering team dedicated to refining every stage, from product development and process improvement to production oversight, ensuring every product delivered meets rigorous quality and performance standards.The price is competitive and the product is quality-assured, which is a good choice for your long-term cooperation.

Why Choose Us

Product application:

Our company mainly produces milling cutters, drills, reamers, boring cutters, cutting tools, etc. Our products are widely used in automobile, aviation, aerospace, mold, electronics, medical equipment and other industries.

Quality control:

Our company has passed the ISO9001 quality management system. From product design to delivery, each process is strictly carried out in accordance with the requirements of the quality management system to ensure product quality.

Our customization:

Our company can confirm drawings and communicate in advance about tool production design according to your special requirements or OEM & ODM tools, and can also provide a full set of tool processing solutions according to your various processing requirements.

Our services:

In the pre-sales stage, our team of experts will recommend the most suitable products according to the needs of customers and provide detailed technical consultation. During the sales period, we ensure timely delivery and provide installation guidance. For after-sales, we provide long-term technical support, warranty services and spare parts to help customers maximize the use of products and get reliable maintenance during use.

1143SC120 Center Drill For Aluminium And Cast Iron

Advantages of Center Drill

Supports the workpiece:

Centre drilled holes serve as a reference point for work holding tools, which helps support and stabilise the workpiece in a lathe.

Creates a starting point:

Centre drills establish a starting point for larger holes, reducing the risk of the drill bit wandering and preventing deflection.

Countersinks holes:

Centre drills can also be used to create countersunk holes, allowing fasteners to sit flush with the surface for a cleaner finish.

Accuracy:

Centre drills provide a precise starting point for larger drills, ensuring the final hole is accurately located.

Enhances tool life:

Starting with a centre drill reduces the load on subsequent drills, prolonging their life by preventing excessive wear and tear.

Specification of Center Drill

Material	Cemented Carbide
Workpiece	Steel / Stainless Steel / Iron
Customized Support	OEM, ODM
Certificate	ISO9001
Origin	Chongqing, China

Types of Center Drills

Type A:

This type of center drill does not have a protective countersink and has a 60-degree conical angle. It creates a hole with a 60-degree angle.

Type B:

This center drill has a protective countersink, a 60-degree conical angle, and a 120-degree countersink angle. In addition to creating a hole with a 60-degree angle, it also produces a 120-degree chamfer at the start of the drilling operation to protect the main hole.

Type R:

This one has a curved shape and is used for creating holes with deviations.

Application of Center Drill

The benefits of center drill bits extend beyond hobby projects. In the automotive industry, for instance, mechanics often utilize them for drilling precise holes in engine parts. In the construction sector, carpenters rely on center drill bits to ensure beams and joints align perfectly. Even in the jewelry-making industry, where precision is paramount, center drill bits help artisans create intricately detailed pieces.

Sizes of Center Drill Bits

Common range: We can produce from 0.05 mm up to 25.4 mm.
Fine increments: Top-rated companies likely offer very small increments, especially in the lower size range. We might offer increments as fine as 0.01mm.

Production Process of Center Drill

01/

Raw material selection: High-speed steel (hss) or cobalt steel alloys are common choices due to their hardness, wear resistance, and ability to hold an edge. We can advise on the optimal material for your specific needs.

02/

Forging and shaping: The raw steel is heated and forged or shaped into a rough blank resembling the final form of the center drill.

03/

Specialized grinding: Precision grinding equipment carefully forms both the drill bit tip and the angled countersink section, often in a single operation.

04/

Cutting edge formation: Grinding the tip: The drill bit tip is ground to the desired point geometry for efficient material removal.

05/

Enhancing hardness: Some tool steel alloys undergo heat treatment processes to improve their hardness, wear resistance, and overall durability. Proficiency in heat treatment optimization could ensure maximum drill performance.

06/

Quality inspection: Precision checks: Dimensions, tip sharpness, countersink angle, and overall quality are meticulously checked. Any imperfections can lead to inaccurate center holes.

Packing and Shipping of Center Drill

Packing	Plastic Box
Shipping	Shipped by road, sea, rail

FAQ

Q: What is a center drill?

A: Centre drills are mainly used to create a hole in the centre of a workpiece. This hole will act as a guide/support for a revolving or dead centre and in some case a starting point for the hole to be drilled with a larger drill diameter.

Q: What is the advantage of a Centre drill?

A: Centre drills establish a starting point for larger holes, reducing the risk of the drill bit wandering and preventing deflection. Countersinks Holes: Centre drills can also be used to create countersunk holes, allowing fasteners to sit flush with the surface for a cleaner finish.

Q: What is another name for a center drill?

A: A combination drill or a countersink are other names for a center drill.

Q: How do I choose a center drill?

A: Center drills come in various dimensions, with their diameter being the most crucial dimension. To make the correct choice of a center drill, attention is usually given to the dimensions of the workpiece, especially its diameter.

Q: What angle is a center drill?

A: 60 Degree Tip Angle - The center drill tip is accurate 60 degree, which can be used to process the centering hole and countersink of general material. It will be your great helper in drilling accurate centering holes.

Q: Why use a centre drill?

A: Center drills are intended to be used to create a hole suitable for a lathe center. They have a 2 part tip that has a small pilot as well as the larger countersinking area of the bit. While center drills are available more cheaply than spot drills, they have some disadvantages.

Q: What is a self centering drill bit?

A: The nosepiece bevel centers itself in the hardware's countersink and retracts as drilling pressure is applied so that the bit drills a perfectly centered pilot hole. Simply loosen a setscrew to replace the drill bit; replace the spring by unscrewing the hex-drive shank from the knurled body.

Q: What is an important thing to do to reduce breakage on a center drill?

A: Selecting the proper speed and feed rate for a particular drilling application is critical to reducing drill wear and breakage.

Q: What is the difference between a center drill and a regular drill?

A: A centre drill has a slightly different geometry than a spot drill, they are shorter, with a tapered, or cone shaped end that is much smaller in diameter than the shaft of the drill. The smaller diameter is used as guide and creates clearance for the tip of lathe centre.

We're professional center drill manufacturers and suppliers in China, specialized in providing high quality customized service. We warmly welcome you to wholesale center drill made in China here and get quotation from our factory. Good service and low price are available.

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