Description
Product Overview
The 26mm High Speed Steel (HSS) Twist Drill Bit is crafted from premium grade HSS alloy, delivering a balance of hardness, toughness, and heat resistance that makes it suitable for demanding metalworking tasks. The drill’s geometry features a 118-degree split point tip, optimized for rapid chip evacuation and reduced walking on the workpiece. Its shank is machined to a standard 3/8‑inch (10 mm) diameter, ensuring compatibility with most cordless and corded drills, while the flutes are precision‑ground to maintain consistent cutting performance across a wide range of materials, including steel, stainless steel, aluminum, and cast iron. The bit’s coating is a thin layer of titanium nitride (TiN) that further enhances wear resistance and extends tool life, allowing users to achieve clean, burr‑free holes with minimal effort.
Technical specifications underline the bit’s reliability: overall length 150 mm, tip length 13 mm, helix angle 30°, and a tolerance of ±0.02 mm on diameter. The HSS composition complies with ISO 4948, guaranteeing a minimum hardness of 62 HRC after heat treatment. The TiN coating thickness averages 2 µm, providing a surface hardness of approximately 2000 HV. These parameters ensure that the drill bit can sustain high rotational speeds while maintaining dimensional stability.
![[Product front view showing all components]](https://www.bigitems.store/wp-content/uploads/2026/07/3c1115aec59c40bb9c99ea1be992be8e.jpg)
Usage
Designed for both professional machinists and dedicated hobbyists, this drill bit excels in environments where accuracy and durability are paramount. Whether you are assembling automotive components, fabricating metal frames for machinery, or performing routine maintenance on equipment, the 26mm HSS twist drill provides reliable performance. Its high‑speed capability enables drilling at up to 2,500 RPM without loss of hardness, making it ideal for high‑speed drilling operations in workshops, fabrication shops, and on‑site repair stations. The bit’s robust construction also tolerates occasional misuse, such as occasional side loading, without compromising its cutting edge.
For DIY enthusiasts, the drill bit offers a user‑friendly experience. The split‑point design eliminates the need for a pilot hole in many soft‑metal applications, reducing setup time and simplifying the drilling process. Pair it with a variable‑speed drill or a drill press for optimal control, and you will achieve precise, round holes that meet engineering tolerances. When drilling harder alloys, applying a light mist of cutting fluid enhances chip evacuation and prolongs tool life.
Safety considerations are integral to effective use. Always wear appropriate eye protection, secure the workpiece with clamps or a vise, and ensure the drill is set to the correct speed for the material being cut. Avoid excessive feed pressure, which can cause the bit to overheat and blunt prematurely.
Why Choose Us
Our commitment to quality begins with the selection of raw materials. The HSS alloy used in this drill bit meets ISO 4948 standards, guaranteeing a minimum hardness of 62 HRC after heat treatment. Each batch undergoes rigorous testing for dimensional accuracy, tip angle consistency, and surface finish, ensuring that every bit leaving our facility meets the same exacting standards. In addition, the TiN coating is applied using a vacuum‑arc deposition process that creates a uniform, adherent layer, reducing friction and extending the service interval.
Beyond the product itself, we provide comprehensive after‑sales support. Our technical team is available to answer questions about optimal drilling parameters, recommended lubricants, and maintenance practices. Should you encounter any issues, we offer a hassle‑free replacement policy within the first 12 months, reflecting our confidence in the durability of the drill bit. Our operations also adhere to environmental regulations, employing eco‑friendly coating processes and recyclable packaging to minimize ecological impact.
Technical Specifications
| Parameter | Value |
|---|---|
| Diameter | 26 mm |
| Overall Length | 150 mm |
| Tip Length | 13 mm |
| Shank Size | 3/8‑inch (10 mm) |
| Helix Angle | 30° |
| Material | High Speed Steel (ISO 4948) |
| Coating | Titanium Nitride (TiN) – 2 µm |
| Hardness | ≥62 HRC (post‑heat‑treatment) |
| Maximum RPM | 2,500 RPM |
Maintenance Tips
- Clean the flutes after each use to prevent chip buildup.
- Apply a light coat of cutting oil before storage to protect the TiN surface.
- Avoid exposing the bit to corrosive environments; store in a dry container.
- Inspect the tip regularly for wear; replace if the cutting edge becomes rounded.
- When not in use for extended periods, keep the bit in a protective case to prevent mechanical damage.
Key Features
- Premium HSS alloy provides superior hardness and heat resistance for long‑lasting performance
- 118‑degree split‑point tip reduces walking and eliminates the need for pilot holes in many applications
- TiN coating minimizes friction, extending tool life and delivering smoother cuts
- Standard 3/8‑inch shank fits most drills, offering versatility across professional and hobbyist tools
- Dedicated customer support and a 12‑month replacement guarantee ensure peace of mind
FAQ
What materials can this 26mm HSS drill bit safely drill?
The bit is designed for a wide range of metals, including carbon steel, stainless steel, aluminum, brass, and cast iron. Its high‑speed steel core and TiN coating allow it to maintain cutting efficiency even on tougher alloys, while the split‑point geometry helps prevent burr formation on softer metals.
Do I need to use cutting fluid when drilling with this bit?
While the TiN coating reduces friction, using a suitable cutting fluid or lubricant is recommended for extended tool life, especially when drilling harder steels or stainless steel. Lubricants help dissipate heat, improve chip removal, and further reduce wear on the cutting edges.
Can this drill bit be used in a drill press as well as a handheld drill?
Yes. The 3/8‑inch shank is compatible with both handheld drills and drill presses. When using a drill press, you can take advantage of precise speed control and consistent feed rates to achieve the most accurate holes possible.
What is the recommended drilling speed for this bit?
For most steel applications, a speed range of 1,500‑2,500 RPM provides optimal performance. For softer metals such as aluminum, you can increase the speed up to 3,000 RPM. Always adjust feed pressure to avoid excessive load on the bit.
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