hrc65 solid drill bit
When your machining setup doesn’t support through-spindle coolant, you need a drill bit that can handle the heat. The SAMHO HRC65 Solid Series provides a
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When your machining setup doesn’t support through-spindle coolant, you need a drill bit that can handle the heat. The SAMHO HRC65 Solid Series provides a
When working with heat-treated mold steels and alloy steels, heat and friction are the enemies of precision. SAMHO’s Internal Coolant Drill Series is designed to
SAMHO’s precision drill bits are essential cutting tools designed for high-speed, high-efficiency hole-making across diverse industries. From general-purpose twist drills to specialized HRC65 super-hard series, our products are engineered to withstand the extreme temperatures and pressures of modern CNC machining. Whether you are drilling through SKD11 mold steel, aerospace-grade titanium, or abrasive graphite, SAMHO provides the stability, durability, and hole-wall quality required for professional manufacturing.
Versatile Industrial Solutions: SAMHO drill bits are optimized for a wide spectrum of materials, including Hardened Steel, Stainless Steel, Aluminum Alloys, Titanium, and Fiber-Reinforced Plastics. This versatility ensures we meet the complex needs of the automotive, aerospace, and electronics sectors.
Toughness Beyond Standard HSS: While standard bits struggle with heat, our Solid Carbide and HRC65 series maintain a sharp cutting edge even under extreme thermal stress. The high-hardness substrate prevents premature wear, significantly extending tool life and reducing the cost-per-hole.
Stable High-Speed Drilling: Our advanced Internal Cooling (Through-Coolant) technology delivers lubricant directly to the cutting edge. This effectively flushes out chips, reduces localized overheating, and allows for much higher feed rates and speeds in deep-hole drilling applications.
Burr-Free, High-Quality Holes: Featuring optimized flute designs and drag-reduction geometries, SAMHO bits minimize vibration and noise. This results in superior dimensional consistency, exceptional hole-wall smoothness, and high positional accuracy, fulfilling the strictest tolerance requirements.
HRC65 Super Hard Series (Solid/Internal Cooling): The premier choice for high-hardness steel (up to 65HRC) and quenched mold parts. Available in lengthened versions for deep-cavity access.
HRC55 Mold Steel Series: Specifically designed for pre-hardened steels, offering a perfect balance of toughness and wear resistance.
Aluminum & Non-Ferrous Series: Features polished flutes and specialized rake angles to prevent material adhesion and ensure rapid chip evacuation.
Graphite & Composite Series: Engineered with diamond-like coatings to resist the abrasive nature of carbon-fiber and graphite electrodes.
Step & Flat-Bottomed Drills: Specialized geometries for multi-diameter holes and precise flat-bottomed boring.
| Characteristic | Description | SAMHO Standard |
| Material | Carbide, Cobalt, or HSS | Sub-micron Grade Carbide |
| Hardness (HRC) | Ability to penetrate tough alloys | Up to HRC 68 |
| Cutting Speed | Rotational speed (RPM) | Optimized for High-Speed CNC |
| Tolerance | Accuracy of the hole diameter | m7 / h6 Precision Grade |
| Coating | Thermal and wear protection | TiAlN, AlTiN, or Nano-Diamond |
A: Our bits are designed for a vast range of materials. We have specialized series for Hardened Steel (up to HRC65), Titanium Alloys, Stainless Steel, Aluminum, and Abrasive Graphite.
A: Internal cooling (through-coolant) is highly recommended for deep-hole drilling (usually 3D or deeper) and high-speed operations. It ensures chips are flushed out efficiently and prevents the bit from warping due to heat buildup.
A: The HRC rating indicates the bit’s hardness. A higher HRC (like our HRC65 series) means the tool can cut through quenched or heat-treated steels that would quickly destroy a standard HSS or HRC55 bit.
A: Yes. We undertake high-precision tool customization (OEM). We can adjust the shank diameter, flute length, and total length to meet your specific aircraft tooling or engine component requirements.
A: Wandering is often caused by a lack of rigidity or an incorrect point angle for the material. SAMHO bits feature optimized point geometries and high-rigidity shanks to ensure the bit starts accurately and maintains a straight path.
A: Flat-bottomed drills are essential for creating holes with a 180-degree flat base, common in mold making for seating springs or ejector pins. They eliminate the need for a separate end milling operation.
A: Always use the recommended feeds and speeds, ensure stable workholding to prevent vibration, and use proper lubrication (especially for metal). Periodic cleaning and inspection for micro-chipping can also prevent sudden tool failure.
A: Absolutely. Our bits are designed with standard straight or hex shanks that are fully compatible with modern CNC machining centers and high-precision tool holders.
A: The Arc Cut In method provides a gradual engagement with the workpiece. This reduces the initial shock and vibration when the bit enters the material, ensuring a mark-free surface and protecting the delicate cutting edge.
A: Standard HRC55/65 drill bits are usually ready for immediate dispatch. Custom geometries or specialized coating requests typically require 7-14 business days after drawing approval.
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