High Quality Stone Engraving Bits Diamond Core Drill Bit Set for CNC Granite Carving
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Product Highlights
- Vacuum Brazed Diamond Tip: Features 6mm diamond tip without iron bar for longer working life and durability.
- Multilayer Diamond Body: Designed with multilayer diamond structure for superior sharpness and wear resistance.
- Wide Stone Material Compatibility: Suitable for engraving, embossing, and milling on marble, bluestone, and granite.
- Cost-Effective Alloy Knife: Standard angle alloy knife is easy to re-grind and suitable for inscribed characters.
- Flexible Shank Diameter Options: Available in 8mm, 10mm, and 12mm shanks to match relief size and speed requirements.
- Optimized Tip Size Selection: Larger tip sizes recommended for extended tool life while maintaining engraving accuracy.
- ISO9001 Certified Quality: Products pass strict factory testing and 100% inspection before delivery.
- Fast Warehouse Shipping: Most items in stock with 2-day dispatch time to forwarders via DHL, FedEx, or UPS.
Product Attributes
- Customization
- Available
- Customized
- Non-Customized
- Standard
- DIN, JIS, AISI
- Model NO.
- DKD-63
- Length
- Taper-length
- Type
- Twist Drill Bit
- Material
- Cobalt Steel Alloys
- Usage
- Wood Drilling, Well Drilling, PCB Drilling, Metal Drilling, Masonry Drilling
- Transport Package
- Paper Box Packaging
- Specification
- 1/64 -1/2 in. x 1/64 in. rises
- Trademark
- DIAOBAO
- Origin
- China
- HS Code
- 820750900
- Production Capacity
- 100000pieces/Year
Product Images of High Quality Stone Engraving Bits Diamond Core Drill Bit Set for CNC Granite Carving
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Product Description
Vacuum Brazed Stone Engraving Bits cnc router bit for carving Hard Granite
Feature
1.The tip of the tools with 6mm diamond ,without iron bar in it ,so the tools will longer working life and More durable ,it is special design for engraving granite .
2.The body of the tool with multilayer diamond ,more sharp and ware resistant .


Machine reference value
Standard angle alloy knife, cost-effective, easy to re-grind! Suitable for inscribed characters; milling of small characters of Yang carved; tombstone carving; and fine reliefs, generally made of bluestone inscribed characters, can engrave hundreds of small characters of 3CM. As for engraving granite, one cut should not exceed 0.6 mm, and dozens of small characters can be engraved under the cut. Ordinary angle alloy knife, the angle is not standard, not suitable for precision Fine relief, lettering is OK, usually more durable than standard angles, easy to regrind by hand, but the specifics still depend on the characteristics of the stone. Scope of application: engraving, embossing and milling on marble, bluestone, granite and other stone materials. Performance: easy to regrind, durable, cost-effective




| MODEL | Diameter (mm) | tip (mm) | cutting length (mm) | total length(mm) |
| 10-6/30 | 10 | 6 | 30 | 90 |
| 12-6/8-30 | 12 | 6mm/8mm | 30 | 90 |
| 12-8/6-40 | 12 | 6mm/8mm | 40 | 100 |
| 12-6-50 | 12 | 6mm | 50 | 120 |
| 12-8-50 | 12 | 8mm | 50 | 120 |
| 12-6/8-60 | 12 | 6mm/8mm | 60 | 120 |
| 12-6-80 | 12 | 6mm | 80 | 150 |
| 12-8-80 | 12 | 8mm | 80 | 150 |
| 12-6-100 | 12 | 6mm | 100 | 180 |
| 16--6/8-30 | 16 | 6mm/8mm | 30 | 90 |
| 16--6/8-60 | 16 | 6mm/8mm | 60 | 120 |
| 16--6/8-80 | 16 | 6mm/8mm | 80 | 150 |
| 16-6/8-100 | 16 | 6mm/8mm | 100 | 180 |
| 16-6/8-120 | 16 | 6mm/8mm | 120 | 180 |
| 16-6/8-150 | 16 | 6mm/8mm | 150 | 180 |


About tool handle diameter
The choice of the diameter of the tool holder is mainly to choose a reasonable tool body strength to prevent the tool from breaking. Generally speaking, 8MM shank diameter is preferred for reliefs within 2 cm, and 10MM shank diameter is preferred for reliefs above 2 cm. The engraving machine has excellent performance and customers who run high-speed can choose a 12MM tool holder to meet the high-speed requirements.
About the tool tip size
In the case of meeting the requirements of engraving accuracy, try to choose a model with a larger tip. The larger the tip, the longer the life. For example, if the 6MM tool tip can meet the requirements of engraving accuracy for large-size reliefs, try not to choose a 3MM or 4MM tool tip.
About blade length
Depending on the flatness of the stone and the set carving depth, you should choose a blade length with margin to prevent accidental sharpening of the knife handle. For example, if the engraving depth is 26MM, the blade length is 30MM. If the engraving depth is 15MM, the blade length is 20MM.
1.About us
We are in dongguan guangdong , which is the hometown of CNC Router. We are focus on CNC Machine Parts.
We've been in this business for more than 10 years.
2.What products do we have?
We have many CNC Machine Parts , include Spindle,Inverter,stepper motor,driver,guide rail,sliding block,
rack,gear box,water pump,dust collector,coupling,tool-setter,tool cutter. And so on ...
3.How we guarantee the quality of the products?
Each batch of products will pass the test before leaving the factory.
Before delivery, we will check the list one by one.
4.Why you should choose us?
We are focus on CNC Router Parts more than 10years. We can provide you with the overall solution, We
can offer you many type CNC products.Just tell us which you need , we will provide you as the best price
and the best quality and service.
5.What's the payment term?
We normally accept T/T, Western Union, L/C, and Paypal.
6.What about the shipping ?
We support multiple modes of transportation,such as by express,by air,by sea,by rail and so on.
Also can shipping by DHL\FedEx\TNT\UPS\EMS and so on.
We can offer different type transactions: FOB\EXW\FCA\DAP\CIF.
We can also help you to keep other suppliers goods at our warehouse and shipping together.
7.How to place an order?
Just tell us what you need , then we can make a Invoice for you. If all OK , then make the order and we
shipping to you the goods ASAP.
In order to ensure that all products are what you need, we will show you the pictures, drawings, videos
and so on before shipping .
8.What about the delivery time?
We have a large warehouse and most of our goods are in stock.When you have order, we can shipping
the goods fast.
Generally speaking, the time from our warehouse to the forwarder is about two days, and then the goods
can be sent by DHL FedEx UPS TNT to you.
About the Supplier
This supplier has been audited by TÜV Rheinland. Verify the report on the official TÜV Rheinland website with ID "MIC-ASR252287". Items marked "" are certified.
Company Profile
Diaobao CNC Equipment Co., Ltd. is an enterprise that integrates production, sales, and research and development. We are committed to providing global users with the field of automation equipment manufacturing, and uphold the product development concept of high efficiency, intelligence, environmental protection, and compatibility. Since its establishment, Diaobao CNC has developed rapidly and has two standardized intelligent equipment manufacturing bases with a total area of over 10000 square meters. We are dedicated to five axis engraving machines, vibration knife cutting machines, woodworking engraving machines, stone engraving machines, advertising engraving machines, mold precision engraving machines, and CNC engraving and milling machines. The product has passed IS09001 certification, with reliable quality and a complete range of varieties, and is exported to the Middle East, Africa, South America and other regions for stable operation. The woodworking industry, model industry, mold industry, vacuum molding industry, packaging industry, clothing industry, automotive interior industry, leather cutting and other industries have a wide range of benchmark customer examples. A professional and independent core R&D team and a well-established after-sales technology department truly provide a customer-centric service-oriented experience.
About Our Factory & Business Background
-
Business Type
- Manufacturer/Factory & Trading Company
- Address
- Dongguan, Guangdong, China
-
Plant Area
- 1300 square meters
-
Number of Employees
- 13
-
Registered Capital
- 2,000,000 RMB
-
Terms of Payment
- LC, T/T, D/P, PayPal, Western Union, Small-amount payment
-
International Commercial Terms(Incoterms)
- FOB, CIF, CFR, EXW
-
Average Lead Time
-
Peak Season Lead Time: within 15 workdays
Off Season Lead Time: within 15 workdays -
Nearest Port
- Shenzhen Port
-
Minimum Order Quantity
- 1
-
Supply Chain Partners
- 10
Our Production Capability & Technical Expertise
-
Main Products
- CNC Cutting Machine
-
Production Lines
- 2
-
Production Machines
- Assembly Line, Saw Machine, Welding Machine
-
QA/QC inspectors
- 3 people
-
Inspection Type for Finished Products
- 100% inspection(Visual inspection & Function inspection)
-
Inspection Method for Finished Products
- Have instructions and uniformly followed
-
Customization Options
- Customization from Samples, Customization from Designs, Full Customization, Minor Customization, Flexible customization
-
ODM Service Available
- Yes
-
R&D Engineers
- 1 people
-
Traceability of Raw Materials
- Yes
-
Own Brand
- Yes
Our Industry Experience & Global Business Record
-
Year of Establishment
- 2016-08-01
-
Export Year
- 8 Years
-
Main Markets
- Domestic
-
Repeat Buyers Choice
- 30%~50%
-
Number of Foreign Trading Staff
- 1
-
Overseas Agent/Branch
- No
-
New Products Launched in Last year
- No
Our Certifications, Standards & Industry Recognition
-
Product Certification
- CE
-
Cooperated with Fortune 500
- No
FAQ
- What materials can these engraving bits be used on?
- They are suitable for engraving, embossing, and milling on marble, bluestone, granite, and other stone materials.
- How do I choose the correct tool holder diameter?
- Use 8mm shank for reliefs within 2cm, 10mm for reliefs above 2cm, and 12mm for high-speed engraving machines.
- What is the recommended cutting depth for granite?
- For granite engraving, one cut should not exceed 0.6 mm to ensure precision and tool life.
- How should I select the blade length?
- Choose a blade length with a margin based on the carving depth; for example, use 30mm length for 26mm depth.
- What payment terms do you accept?
- We normally accept T/T, Western Union, L/C, and Paypal.
- What shipping methods are available?
- We support express, air, sea, and rail transport via DHL, FedEx, TNT, UPS, and EMS.
- How do you guarantee product quality?
- Each batch passes testing before leaving the factory, and we check the list one by one before delivery.
- What is the typical delivery time?
- Most goods are in stock; shipping from our warehouse to the forwarder takes about two days.
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