Basic Info.
Type
Deep-Hole Carbide Internal Cooling Drill
Material
Tungsten Carbide
Transport Package
Single Package
Specification
Dia. 3-Dia. 20mm
Product Description
Tungsten Carbide 2 Flute Step Drill Bit, Coolant Drilling cutter for machine tools
Product Description
Carbide Step Drill - Precision, Durability & Customization
Superior Wear & Impact Resistance
Crafted from premium carbide sourced from globally recognized brands, our step drill offers outstanding wear resistance and durability. Its robust structure ensures high impact resistance, minimizing breakage and extending tool life even under demanding conditions.
Optimized Chip Evacuation
Designed with advanced chip flute geometry, our step drill enhances chip removal efficiency, reducing heat buildup and improving machining precision. This ensures smooth operation and a more stable cutting process.
Custom & Internal Cooling Options
In addition to standard specifications, we offer non-standard customization to meet specific application needs. Internal cooling designs are also available, providing enhanced heat dissipation and extending tool performance in high-speed operations.
As a professional manufacturer, we are committed to delivering high-quality, tailored solutions. For inquiries and custom orders, please feel free to contact us.
Detailed Photos
Application
Product Parameters
Standard size specifications
flute diameter | max.cutting depth | shank diameter | overall length |
D3.00-D3.70 | 20 | 6 | 62 |
D3.80-D4.70 | 24 | 6 | 66 |
D4.80-D6.00 | 28 | 6 | 66 |
D6.10-D7.00 | 34 | 8 | 79 |
D7.10-D8.00 | 4 | 8 | 79 |
D8.10-D10.0 | 47 | 10 | 89 |
D10.1-D12.0 | 55 | 12 | 102 |
D12.1-D14.0 | 60 | 14 | 107 |
D14.1-D16.0 | 65 | 16 | 115 |
D16.1-D18.0 | 3 | 18 | 123 |
D18.1-D20.0 | 2 | 20 | 131 |
D20.1-D22.0 | 96 | 25 | 146 |
D22.1-D25.0 | 103 | 25 | 153 |
MAX 50D
ITEM | Flute diameter | Max.cutting depth | Flute length | Overall length | Shank length | Shank diameter |
RDS50030-1 | 3.0 | 166 | 171 | 215 | 36 | 6 |
RDS50035-1 | 3.5 | 186 | 192 | 235 | 36 | 6 |
RDS50040-1 | 4.0 | 208 | 214 | 255 | 36 | 6 |
RDS50045-1 | 4.5 | 233 | 240 | 283 | 36 | 6 |
RDS50048-1 | 4.8 | 259 | 267 | 310 | 36 | 6 |
RDS50050-1 | 5.0 | 259 | 267 | 310 | 36 | 6 |
RDS50055-1 | 5.5 | 308 | 317 | 358 | 36 | 6 |
RDS50060-1 | 6.0 | 308 | 317 | 358 | 36 | 6 |
RDS50061-1 | 6.1 | 337 | 347 | 389 | 36 | 8 |
RDS50065-1 | 6.5 | 337 | 347 | 389 | 36 | 8 |
RDS50068-1 | 6.8 | 357 | 368 | 409 | 36 | 8 |
RDS50070-1 | 7.0 | 357 | 368 | 409 | 36 | 8 |
RDS50074-1 | 7.4 | 388 | 400 | 441 | 36 | 8 |
RDS50075-1 | 7.5 | 388 | 400 | 441 | 36 | 8 |
RDS50080-1 | 8.0 | 410 | 422 | 462 | 36 | 8 |
RDS50083-1 | 8.3 | 441 | 454 | 500 | 40 | 10 |
RDS50085-1 | 8.5 | 441 | 454 | 500 | 40 | 10 |
RDS50090-1 | 9.0 | 466 | 480 | 525 | 40 | 10 |
Note:
1.Non-standard products are available according to customer's drawing or customer's sample .
2.We also design and manufacture products,according to the request of customer's.
3.We offer a wide range of Internal Coolant Drills in various specifications, with standard models readily available in stock. These include both general-purpose and stainless steel-specific options, with diameters ranging from D3 to D25mm. The drills come in lengths of 3D, 5D, 8D, and 12D, with a 0.1mm incremental variation between sizes. For more details, please contact our sales team.
Super raw materialGuhring(K44UF,DK460UF) | from | Germany |
Kennametal | from | America |
CERATIZIT(CTU08L,TSF22,TSF44) | from | LUXEMBOURG |
From China:
GESAC(GU20,GU20F,GU25UF) | from | xiame China |
CB(WF25,K200,K100,TF25,WF03,WF30) | from | Taiwan |
Zigong(ZK30,ZK40) | from | Zigong China |
Zhu zhou | from | Zhuzhou China |
Note:Delevel uses only alloy rods from well-known brands, both domestic and international. We guarantee that all materials are 100% sourced from original manufacturers, never recycled. This ensures the quality, high performance, and wear resistance of every tool, meeting the demands of precision machining for our customers.
Super coatingItem | ALTiN | AlCr-based | TiSiN | AlCr-Blue |
Hardness | 3100-3400 | 3100-3500 | 3300-3700 | 3300-3700 |
Thickness | 1-2.5μ | 1-3μ | 2-3μ | 2-3μ |
Oxidation Temp | 900-1000 | 900-1100 | 900-1000 | 900-1000 |
Friction coefficient | 0.3 | 0.35 | 0.4 | 0.35 |
Color | Black | Bright grey | Copper | Colorful Blue |
Packaging & Shipping
Our Advantages
Company Profile
CHANGZHOU DELEVEL TOOLS CO.,LTD is the leading manufacturer for carbide cutting tools supplier in China,we can produce carbide deep hole inner-cooling drills,end mills,reamers,thread milling cutters and other non-standard milling tools which are widely used in aerospace,automotive,motorcycle,medical treatment and mould processing.
As a Professional & Industrial Carbide cutting tools Supplier in China, we always make commitment to all clients:
1. More than 15 Years experience in solid carbide cutting tool industry;
2. 100% on-time delivery;
3. Consistency on quality and long-lasting innovation;
4. Customized production and Competitive price.
Certifications
Address:
No. 256-2MingxinMiddle Road, Hutang Town, Wujin District, Changzhou City, Jiangsu.
Business Type:
Manufacturer/Factory
Business Range:
Manufacturing & Processing Machinery
Management System Certification:
ISO 9001
Company Introduction:
CHANGZHOU DELEVEL TOOLS Co., Ltd is a professional manufacturer of carbide tools. The company produces a wide range of carbide tools, including solid carbide drills, internal coolant drills, deep hole drills, thread milling cutters, carbide end mills, boring tools, reamers, step tools, forming tools, and indexable tools. These products are widely used in industries such as aerospace, automotive, motorcycles, engines, air conditioning compressors, medical devices, mold manufacturing, and mechanical processing.
The tool materials are selected from high-quality domestic and imported rods, supported by world-class CNC grinding machines from Australia, Germany, and the United States. The company specializes in providing high-precision and custom non-standard tools to meet your manufacturing needs.
As a Professional & Industial Carbide cutting tools Supplier in China, we always make commitment to all clients:
1.12 Years experience in solid carbide cutting tool industry;
2.100% on-time delivery;
3. Consistency on quality and long-lasting innovation;
4. Customized production and Competitive price.