| Customization: | Available |
|---|---|
| Customized: | Customized |
| Standard: | GB/T |
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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.
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.
| Guhring(K44UF,DK460UF) | from | Germany |
| Kennametal | from | America |
| CERATIZIT(CTU08L,TSF22,TSF44) | from | LUXEMBOURG |
| 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 |
| Item | 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 |
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.
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