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pdc cutter — short for Polycrystalline Diamond Compact cutter — is the cutting element that makes modern drilling and stone cutting tools so effective. If you have ever wondered what gives
pdc drill bit tools their exceptional wear resistance and cutting speed, the answer lies in these small but powerful diamond composite inserts. This guide covers everything you need to know about PDC cutters: what they are, how they are made, the most common sizes, their real-world applications, and how to make smart purchasing decisions.
What Is a PDC Cutter?
A PDC cutter is a superhard composite material produced by sintering a layer of polycrystalline diamond (PCD) onto a cemented tungsten carbide substrate under ultra-high pressure and ultra-high temperature conditions. The diamond layer provides extreme hardness and wear resistance, while the carbide substrate delivers structural strength and impact toughness. This combination creates a cutting element that is far more durable than conventional carbide tools.
The manufacturing process involves placing diamond micro-powder and a carbide substrate into a high-pressure, high-temperature press. At approximately 5-6 GPa of pressure and 1400-1500°C, the diamond particles bond together and fuse to the carbide substrate, forming a single, inseparable composite. The result is a cutter that can withstand the punishing conditions of rock drilling, mining, and stone cutting operations.
Common PDC Cutter Sizes and Specifications
PDC cutters come in standardized sizes, typically identified by a four-digit code where the first two digits represent the diameter and the last two indicate the total height — both in millimeters. The table below shows the most commonly used sizes:
| Size Code |
Diameter (mm) |
Height (mm) |
Typical Application |
| 0804 |
8.0 |
4.5 |
Small-diameter PDC bits, chainsaw cutters |
| 0808 |
8.0 |
8.0 |
Quarry mining, chainsaw step cutters |
| 1308 |
13.44 |
8.0 |
Stone cutting, PDC bit inserts, scrap cutters |
| 1313 |
13.44 |
13.2 |
Mining PDC bits, heavy-duty drilling |
| 1613 |
15.88-16.00 |
13.2 |
Oil drilling bits, large-diameter mining bits |
The 1308 size is by far the most popular for general-purpose applications, while 1313 and 1613 are preferred for more demanding conditions that require greater impact resistance. The diamond layer thickness typically ranges from 2.0 to 2.5 mm, with a chamfer of 0.3 mm on the diamond edge.
Key Applications of PDC Cutters
pdc cutters serve a wide range of industries, each with specific requirements for cutter grade, size, and configuration. Understanding these applications helps buyers ｓｅｌｅｃｔ the right product for their needs.
Mining and Quarrying: PDC cutters in sizes 0808 and 1308 are widely used in quarry mining operations for cutting granite, marble, and other hard stones. They are mounted on circular saw blades, wire saws, and chainsaw cutting systems. The 0808 1308 PDC cutters for quarry mining are specifically designed for the abrasive conditions of natural stone extraction.
PDC Drill Bit Manufacturing: The most important application is as cutting inserts for PDC drill bits used in oil and gas exploration, water well drilling, and geological prospecting. The 1308 PDC cutter inserts for mining PDC bits are a standard choice for matrix-body and steel-body PDC bits. The 0804 PDC polycrystalline diamond compact is commonly used for smaller-diameter bits.
Stone Cutting and Processing: PDC cutters with shanks, such as the 1308 PDC cutter with shank for stone cutting, are designed for stone processing machinery. They provide clean, precise cuts on marble, granite, and engineered stone. Many stone processors also use scrap PDC cutters 1308 for stone cutting as a cost-effective alternative for less demanding applications.
Chainsaw Cutting Systems: Specialized step-shaped PDC cutters, including the 0808 1308 1313 chain saw step PDC cutter series, are used in quarry chainsaw machines for cutting dimensional stone blocks directly from the quarry face.
New vs. Scrap and Used PDC Cutters
Many buyers are surprised to learn that scrap and used PDC cutters have a significant secondary market. Used PDC cutter inserts for stone cutting are popular among stone processors looking to reduce tooling costs without sacrificing performance for certain applications. Scrap PDC cutter 1308 1313 1613 products are typically reclaimed from worn drill bits where the diamond layer is still partially intact.
Used PDC cutters work well for stone cutting, chainsaw applications, and less demanding drilling operations. However, for oil and gas drilling or deep geological exploration, new PDC cutters with certified quality are the safer choice. The key difference comes down to remaining diamond layer thickness, bond integrity, and impact resistance — factors that degrade with use.
Tip: When buying scrap PDC cutters, always check the remaining diamond table thickness and ask for batch consistency. Reputable suppliers will sort scrap cutters by size and grade before offering them for sale.
How to Choose the Right PDC Cutter
Selecting the right PDC cutter involves evaluating several factors beyond just size. Here are the key considerations:
Material to be cut: Harder, more abrasive formations require cutters with higher diamond density and better thermal stability. Softer formations can use standard-grade cutters.
Cutter size and geometry: Larger cutters (1313, 1613) provide greater impact resistance; smaller cutters (0808, 1308) offer better penetration rates in hard rock.
Diamond layer quality: Look for uniform diamond distribution, consistent chamfer, and proper bonding between the diamond layer and carbide substrate. Poor bonding can lead to delamination under load.
Application temperature: For deep drilling applications where downhole temperatures can exceed 200°C, thermally stable PDC cutters with specialized diamond formulations are recommended.
Budget considerations: For non-critical applications such as stone cutting or shallow water well drilling, scrap or used PDC cutters can reduce costs by 50-70% while still delivering adequate performance.
Advantages of PDC Cutters over Conventional Carbide
Compared to traditional tungsten carbide cutting tools, PDC cutters offer several distinct advantages that have driven their widespread adoption across drilling and cutting industries:
Exceptional hardness: The polycrystalline diamond layer has a hardness approaching that of natural diamond, rated at approximately 50-70 GPa on the Vickers scale — far exceeding tungsten carbide at 15-20 GPa.
Superior wear resistance: PDC cutters can last 10 to 30 times longer than carbide tools in abrasive rock formations, dramatically reducing downtime for bit changes.
High thermal conductivity: Diamond's excellent thermal conductivity helps dissipate heat generated during cutting, reducing thermal damage to both the cutter and the workpiece.
Faster cutting speeds: The sharp, durable diamond edge maintains its cutting efficiency over extended periods, resulting in higher penetration rates and improved productivity.
Versatility: One PDC cutter design can handle a wide range of rock types, from soft shale to medium-hard limestone, reducing the need for multiple bit changes.
Source Your PDC Cutters from a Trusted Supplier
Xi'an Heaven Abundant Mining Equipment CO.,LTD (TY Drill Bits) has been supplying high-quality
pdc cutters to global customers since 2010. Based in Xi'an, China, our company offers a complete range of PDC cutters including new 0804, 0808, 1308, 1313, and 1613 sizes, as well as scrap and used PDC cutter inserts for stone cutting and bit manufacturing. We also supply
pdc drill bit products, tricone bits, core bits, rock drilling tools, and cutting tools to customers in over 90 countries.
Our PDC cutters are sourced from reliable manufacturers and undergo strict quality inspection before shipment. With ISO9001 certification, flexible payment terms including T/T, L/C, and PayPal, and a lead time of within 15 working days, we make it easy to get the cutters you need. OEM services are available for customized sizes and specifications.
Contact us today at
Lucy@tydrillbits.com or visit
www.tydrillingbit.com to browse our full catalog of
pdc cutters and drilling tools.
Xi'an Heaven Abundant Mining Equipment CO.,LTD
