| Customization: | Available |
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| Customized: | Customized |
| Standard: | GB/T |
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Wide Application Range
Engineered for maximum versatility, this step drill bit is ideal for both metal and plastic drilling tasks. It effortlessly handles sheet metals like aluminum, brass, and mild steel, as well as plastics such as PVC, acrylic, and ABS. Its all-in-one design enables users to drill a variety of hole sizes with clean, burr-free finishes-perfect for workshop and field applications alike.
Fast Start Cutting Tip for Immediate Penetration
Equipped with a precision-engineered split point tip, the bit starts drilling on contact-eliminating the need for center punching and reducing bit walking. This feature ensures faster, more accurate hole starts, even on smooth or curved surfaces, significantly improving work efficiency.
Multi-Diameter Drilling with Integrated Deburring
Each step of the bit is CNC-ground to ensure precise hole sizing and smooth transitions between diameters. Additionally, the built-in deburring function at each step edge removes sharp burrs as you drill, leaving behind a clean, finished hole without the need for additional processing.
Thermally Treated HSS for Longevity
Made from premium high-speed steel and enhanced through vacuum heat treatment, this bit resists wear, heat, and edge dulling. It maintains structural integrity even under prolonged high-speed drilling, making it reliable for both DIY and industrial use.
Universal Use Across Industries
From electricians and HVAC installers to metal fabricators and plastic panel workers, this drill bit is an essential tool. It supports clean, efficient hole-making in a wide range of environments-including control panels, switchboards, plastic enclosures, and sheet metal assemblies.
1. Fast-Start Split Point Tip for Immediate Engagement
Designed with a self-centering split point tip, this drill bit provides fast, accurate starts without slipping or walking-no center punching required. The tip bites instantly into metal or plastic surfaces, reducing start time and improving precision on curved or flat workpieces.
2. Sharp HSS Cutting Edges with Built-In Deburring
Manufactured from premium high-speed steel (HSS), the precision-ground cutting edges not only ensure smooth hole formation but also integrate a deburring feature at each step. This eliminates sharp edges as you drill, saving time on post-processing.
3. Spiral Flute Design for Clean Chip Evacuation
Optimized spiral flutes enhance chip removal and minimize clogging, especially when drilling plastics or thin sheet metals. Efficient chip evacuation reduces heat buildup and maintains cutting performance over longer work cycles.
4. Corrosion-Resistant Surface Finish
Coated with a protective layer such as titanium nitride (TiN) or polished for anti-corrosion performance, the bit withstands harsh environments involving lubricants, humidity, or airborne metal particles-extending its working life in both shop and field settings.
5. Multi-Stage Design with Size Versatility
This step drill bit covers multiple hole diameters in one tool. The laser-etched markings on each step aid in quick identification and precise control, while the balanced construction minimizes vibration-ideal for use in handheld drills or drill presses.
The drill bit features a specially engineered split point tip that enables quick, self-centering starts-eliminating the need for pre-drilling or center punching. This ensures smooth engagement and prevents slipping, especially useful on stainless steel, aluminum, or curved surfaces.
2. Built-In Deburring for Clean, Finished Holes
Each step is precision-machined not only to enlarge holes accurately but also to deburr automatically as you drill. This integrated deburring function produces smooth, professional-grade edges, reducing the need for secondary processing.
3. High Wear Resistance & Heat Durability
Made from premium HSS and treated for enhanced hardness, the bit resists wear, deformation, and heat buildup during high-speed drilling. It's ideal for long-term use on materials like stainless steel, aluminum, PVC, and ABS.
4. Multi-Diameter Drilling in a Single Tool
With one bit covering a range of hole sizes, users can switch between diameters without changing tools-greatly improving efficiency. This is perfect for tasks involving junction boxes, metal panels, or plastic enclosures.
5. Versatile for Professional & DIY Use
From electricians and HVAC professionals to workshop DIYers, this step drill bit delivers precision and reliability across diverse applications. Its polished or coated surface also offers added protection in demanding environments.
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CNC Precision Grinding for Smooth Entry & Clean Steps
Each drill bit is CNC precision-ground to form accurate step geometries and a fast-start split point tip. The self-centering tip enables quick, stable starting without wandering, even on hard metals-ideal for fast and accurate hole placement on stainless steel, aluminum, and plastic panels.
Vacuum Heat Treatment for Extended Durability
The bit undergoes advanced vacuum heat treatment, enhancing both surface hardness and internal toughness. This increases wear resistance and ensures thermal stability during repetitive, high-speed operations in metal and thermoplastic applications.
Ultra-Fine Polishing for Deburring and Chip Evacuation
Each step is polished to a mirror finish, reducing friction and helping chips evacuate efficiently. This finish not only prevents heat buildup but also contributes to built-in deburring-creating clean, smooth-edged holes without the need for secondary finishing.
Purified HSS Core via EAF + LF + VD + RS ESR
Using high-purity HSS produced through Electric Arc Furnace, Ladle Refining, Vacuum Degassing, and Electro-Slag Remelting, the bit achieves superior toughness and structural consistency. This enables clean, precise cutting through hard or laminated materials.
Cryogenic + Precision Tempering
A multi-stage thermal process including quenching and cryogenic treatment pushes hardness to HRC 67 while preserving core ductility. This balance is crucial for reducing chipping or cracking during high-load drilling, especially in layered metals or plastics.
RS ESR Edge Technology for Wear Resistance
Rapid Solidification ESR processing distributes carbides and cobalt uniformly at the cutting edge, increasing wear resistance and edge retention. The result: smooth step transitions and reliable burr-free drilling in high-load, high-heat scenarios.
M35 HSS Core as Standard
We use M35 high-speed steel as our base material due to its excellent balance of hardness and ductility. It's ideal for users who require performance in both metals and plastics.
Tailored Geometry and PVD Coatings
Available in a wide range of step sizes, flute profiles, and helix angles. PVD coatings like TiAlN (for high-speed metal drilling) and TiCN (for abrasive plastics or repeated-use scenarios) further enhance tool life and reduce friction.
Q1: What makes this deburring step drill bit different from standard drill bits?
A: This step drill bit features a fast-start cutting tip that enables immediate, walk-free drilling on metal and plastic surfaces-no center punching required. Additionally, each step is designed with an integrated deburring edge, which eliminates burrs as you drill. This dual-function design streamlines your workflow and delivers clean, ready-to-use holes in one step.
Q2: What materials is this drill bit suitable for?
A: It's ideal for drilling thin metals like stainless steel, carbon steel, aluminum, brass, and non-metallic materials such as PVC, acrylic, and composite panels. The built-in deburring function and sharp HSS cutting edge make it perfect for control panels, junction boxes, HVAC ducts, and plastic enclosures.
Q3: Can this bit drill multiple hole sizes?
A: Yes. The stepped design allows you to drill multiple diameters with a single bit, with each step clearly laser-marked for quick size reference. This improves efficiency by reducing the need to switch bits during work.
Q4: Is it compatible with cordless or handheld power drills?
A: Absolutely. The bit features a universal hex shank that fits most cordless power drills and drill presses. Its high-speed steel body ensures stable performance at high RPMs, even in demanding applications.
Q5: Does this drill bit require additional finishing after drilling?
A: No. Thanks to the deburring capability built into each step, the drilled holes come out smooth and clean, often eliminating the need for further finishing. This saves time and improves workflow efficiency, especially for repetitive tasks.
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