| Customization: | Available |
|---|---|
| Customized: | Customized |
| Standard: | GB/T |
|
Still deciding? Get samples of $ !
Request Sample
|
Suppliers with verified business licenses
Audited Supplier Audited by an independent third-party inspection agency
Product Description
1)Stainless Steel
2)Mold Steel
3)Copper Alloy
4)Aluminum Alloy
5)Cast Iron
6)PVC
1)Razor-Sharp Cutting Edge - High hardness for smooth, fast drilling with minimal wear.
2)Anti-Slip Design - Fully ground blade opening ensures precise positioning and reduces slippage.
3)Optimized Chip Removal - Fine-tooth spiral design for effortless debris clearance.
4)Polished Finish - Smooth surface treatment enhances durability and aesthetics.
5)Lightweight & Ergonomic - Easy to handle, reducing operator fatigue.
1)Razor-Sharp Cutting Edge - High hardness for smooth, fast drilling with minimal wear.
2)Anti-Slip Design - Fully ground blade opening ensures precise positioning and reduces slippage.
3)Optimized Chip Removal - Fine-tooth spiral design for effortless debris clearance.
4)Polished Finish - Smooth surface treatment enhances durability and aesthetics.
5)Lightweight & Ergonomic - Easy to handle, reducing operator fatigue.
1) Durable & Efficient
Crafted from premium high-speed steel (HSS) with a serrated design, our twist drill ensures exceptional durability and fast, clean drilling - even in tough materials like stainless steel, hardened alloys, and plastics.
2) Wide Material Compatibility
Designed for versatility, this drill delivers reliable performance across a range of materials, including metals, alloys, composite materials, and engineering plastics, making it a must-have for both industrial and workshop use.
3) Professional-Grade Results
Whether for industrial production lines or precision DIY projects, this drill bit offers superior cutting efficiency, reduced heat generation, and extended tool life, ensuring flawless, professional-grade drilling every time.
1)Advanced Manufacturing Equipment
High-precision CNC grinding ensures accurate flute geometry and consistent point angle control, delivering stable, high-speed drilling with smooth chip evacuation from both ends.
High-temperature vacuum heat treatment enhances core hardness and cutting edge toughness, prolonging tool life under demanding working conditions.
Ultra-precision surface polishing minimizes friction, reduces heat buildup, and prevents workpiece surface damage during continuous drilling operations.
2)Leading Smelting Process
EAF + LF + VD + RS ESR smelting technology produces ultra-clean HSS material with extremely low impurity content, improving drill toughness, wear resistance, and reducing the risk of chipping or breakage in high-load applications.
3)Cutting-Edge Heat Treatment
An integrated Quenching, Cryogenic Treatment, and Tempering process achieves an optimal balance of hardness (up to HRC 67) and flexibility, ensuring reliable performance when drilling hardened steels, stainless steels, and alloy materials without micro-cracking.
4)Exclusive RS ESR Technology
Rapid Solidification ESR refining enhances the uniform distribution of abrasive particles along the cutting edges on both ends, significantly boosting wear resistance, thermal stability, and edge integrity - especially critical for continuous, deep-hole, and high-speed drilling.
5)Customizable Production Options
Available in multiple HSS grades (M2, M35, M42) to suit different material applications such as stainless steel, titanium alloys, and heat-resistant steels.
Flexible customization of flute length, helix angle, point angle, and double-end geometry to optimize cutting performance for specific materials and hole depths.
Optional premium coatings (TiN, TiAlN, TiCN) available for enhanced wear resistance, heat resistance, and cutting efficiency in demanding environments.
Optimized flute geometry and chip evacuation performance from both ends, ensuring efficient chip removal during deep-hole or continuous high-speed drilling.
Customizable point angle, helix angle, and double-end design to achieve optimal cutting performance across a wide range of metals, stainless steels, and alloy materials.
Extensive selection of HSS grades and premium coatings available to meet diverse industrial drilling demands, enhancing tool life, heat resistance, and cutting efficiency in various applications.
Q1: What is a double-ended twist drill and how is it different from a standard twist drill?
A: A double-ended twist drill features cutting points at both ends of the drill, allowing operators to reverse and continue drilling once one end wears out. Compared to standard single-ended drills, it offers extended tool life, reduced downtime for tool changes, and cost savings, especially in high-volume production environments.
Q2: What materials and coatings are available for your double-ended twist drills?
A:
Material options:
High-speed steel (HSS/M2/M35)
Cobalt high-speed steel (HSS-Co)
Powder metallurgy high-speed steel (PM-HSS)
Coating options:
TiN (general purpose)
TiAlN (high-temperature resistance for hard materials)
TiCN (high hardness and superior wear resistance)
Uncoated and custom coating options available upon request.
Q3: What causes rapid wear or breakage during drilling, and how can it be avoided?
A:
Common causes:
Excessive feed rate
Insufficient cooling or lack of cutting fluid
Using unsuitable drills for hard materials instead of cobalt or coated variants
Recommendations:
Select the appropriate drill material, coating, and geometry based on the workpiece hardness and drilling depth. Always apply adequate cutting fluid to reduce heat buildup and extend tool life.
Q4: How can I tell when a double-ended twist drill needs to be replaced?
A:
Increased burrs on the hole edge
Abnormal or rough cutting noise
Hole diameter deviation exceeding 0.1mm
Visible wear, chipping, or blunting on the cutting edge
Tip: Regularly inspect the cutting edges under magnification and replace drills promptly to maintain machining accuracy and surface finish quality.
Q5: Can the helix angle and cutting geometry of double-ended twist drills be customized? What are the typical applications?
A: Yes - both the helix angle and point geometry can be customized based on application needs. Common recommendations include:
30°-35° helix angle: Ideal for steel and cast iron
40°-45° high helix angle: Recommended for soft materials like aluminum and copper to improve chip evacuation
10°-20° low helix angle: Suitable for hardened steels and alloys to minimize vibration
We also offer custom point angles and flute designs to optimize cutting performance, drilling speed, and hole quality for different applications.
Q6: Do you offer custom double-ended twist drill designs? What options are available?
A: Yes - we support complete customization, including:
Internal coolant hole designs (drawings required)
Step drills, multi-diameter drills, and double-ended step drills
Custom helix angles, point angles, flute lengths, total lengths, diameters, and coatings
Customizations ensure optimized drilling performance for specific materials, hole depths, and machining environments.
){kind=link}