50mm - 400mm Coolant Through Drill Bits Heavy Duty Drill Bit For Metal
| Attribute | Value |
|---|---|
| Name | Coolant Through Drill Bits |
| Number of flute | 2 |
| Type | Heavy duty step drill |
| Diameter | 4-32mm |
| Overall length | 50-400mm |
| Flute type | Spiral flute |
| Coolant method | Inner coolant |
| Application | Cast iron, steel, stainless steel, etc |
AMG's advanced carbide step drill with through-coolant technology delivers unmatched performance in heavy-duty machining. Designed for high-production environments, this innovative tool combines multiple drilling operations into one while maintaining exceptional tool life and hole quality.
- Integrated Step Design
- Combines pilot hole and chamfering in single operation
- Precision-ground steps maintain ±0.01mm diameter tolerance
- Saves 50-70% cycle time vs. conventional methods
- Advanced Through-Coolant System
- 2-4 coolant channels (diameter dependent)
- Maintains 15-20Bar coolant pressure at cutting edge
- Reduces heat buildup by 40% in deep holes
- Premium Carbide Construction
- Sub-micron grain structure (0.5μm) for maximum edge retention
- Heavy-duty web design withstands high feed rates
- Specialized Coating Options
- AMG Hyper Coat (standard) for steel/stainless
- Diamond coating available for composites/CFRP
- 50% faster than conventional twist drills in stacked/stainless steel
- No secondary deburring required (clean hole edges)
- Consistent accuracy across all step diameters (±0.02mm)
- Automotive: Drilling+chamfering engine blocks
- Aerospace: Stack material drilling
- Energy: Flange hole preparation
- General Engineering: High-volume production
Free sample: Free samples can be provided, if client is willing to pay the shipping cost.
Special offer for new customers: Enjoy USD50 discount when you spend USD500+ on your first order.
We usually send goods by express like FedEx, UPS, DHL, TNT, EMS, etc. We also can send products to your shipping agent in China.
For stock items, we can dispatch within 2 business days after receiving payment. For the out-of-stock items, it depends on the quantity. Usually is around 5-7 business days.
We accept T/T, Credit card, etc.
Yes, we can produce special carbide tools according to your drawings or samples. And we also can design the tools according to the drawing of your work pieces.
Get in Touch
Have questions about our products or want to discuss a custom order? Our team is ready to help you.