Carbide Jobber Drill 3.9mm
Product Overview
Carbide Jobber Drills are precision-crafted tools designed to meet the demanding needs of metalworking professionals. These drills specialize in delivering reliable, high-performance drilling with remarkable accuracy and durability.
Perfect for machinists, fabricators, and workshop experts, this drill is suited for a wide range of applications including general-purpose drilling through tough materials. Its careful design ensures superior cutting and extended tool life.
With features like a Four Facet split point and tight tolerance control, this drill keeps your workflow smooth and efficient. If reliability and precision are a priority, this tool is definitely worth adding to your toolbox.
Key Features
- Precision 2 flute design for efficient chip removal
- 20-degree helix angle for optimal cutting speed
- 118-degree Four Facet split point reduces walking and ensures straight drilling
- Tolerance of diameter +.000/-.0005 for tight precision
- Flute length of 35mm balances cutting depth with rigidity
- Overall length of 63mm fits most standard drilling machines
- Carbide material for exceptional wear resistance and longevity
- Metric size of 3.9mm (decimal 0.1535) suitable for fine hole making
- Designed for metalworking applications requiring clean, precise holes
- Compatible with standard collets and drill chucks
Specifications
Shape / Type – Standard Jobber Drill
Cut Type – Carbide Jobber Drill
Tool Size – 3.90 mm (Metric), 0.1535 inches (Decimal Equivalent)
Flute Length – 35 mm
Overall Length – 63 mm
Helix Angle – 20 degrees
Point Angle – 118 degrees Four Facet split point
Tolerance – Diameter +.000 / -.0005
Material Compatibility – Metalworking
Brand / Manufacturer – Burrs4Less
Made In – USA
SKU / Part Number – 30390
The Burrs4Less Advantage: More Than Just a Drill Bit
Choosing Burrs4Less Carbide Jobber Drills means investing in more than just a tool; you’re getting decades of USA-based manufacturing expertise built on quality and consistency. Our carbide drills reduce downtime by lasting longer and holding sharpness where others wear down quickly. That means fewer tool changes, smoother production runs, and less waste from inaccurate holes or material damage.
Our brand stands out with a strong commitment to precision and reliability supported by rigorous quality checks. These drills also contribute to energy efficiency on your machines by improving cutting performance, leading to less heat build-up and power consumption. In the real world, this means fewer breakdowns and a more predictable manufacturing process that boosts your bottom line over time.
Case Study: Real Business, Real Results
Dallas, Texas workshop required upgrade for high-precision drilling tasks.
"Switching to Burrs4Less Carbide Jobber Drills drastically improved hole accuracy and tool life, saving us costly reworks."
Jenna Martinez – Production Manager
Increased hole accuracy by over 30%, reducing downtime.
Why the Four Facet Split Point Improves Your Drilling Accuracy
The Four Facet split point design on this drill is like having a guide that keeps your drill bit exactly where you need it. Imagine trying to drill a tiny hole with a wobbly screwdriver – the drill tends to wander. This special point reduces walking (bit slippage) on the surface, allowing cleaner, more centered holes right from the start. It’s especially handy when precision is non-negotiable, saving you time and material.
Installation and Maintenance Guide
Setting It Up
- Ensure your drill chuck or collet matches the 3.9mm shank diameter.
- Clean the chuck to remove debris before inserting the drill bit.
- Tighten the chuck securely to prevent wobble during drilling.
- Use appropriate speeds and feeds for carbide bits to extend lifespan.
- Always verify alignment before starting the drilling operation.
Keeping It Going
- Regularly clean the drill flutes to prevent clogging and overheating.
- Inspect the tip for wear or damage before each use.
- Sharpen the drill bit only using appropriate carbide sharpening methods.
- Store in a protective case to avoid chipping or blunt edges.
- Use coolant or lubricants to reduce heat buildup during drilling.
Frequently Asked Questions
Q: What materials are these drills best suited for?
They are designed primarily for metalworking and handle a variety of metals with excellent wear resistance.
Q: What is the significance of the Four Facet split point?
This point design reduces drill walking and improves hole accuracy on tough materials.
Q: Can these drills be used in handheld drills?
They are generally intended for fixed machinery to maintain precise control and accuracy.
Q: How important is the 20-degree helix angle?
It balances chip evacuation with cutting forces to enhance drilling speed and smoothness.
Q: Are coolant or lubricants recommended?
Yes, using coolant helps prolong tool life by reducing heat during drilling.
Q: What tolerances do these drills hold?
They maintain a diameter tolerance of +.000/-.0005 for precision work.
Q: How long is the flute length?
The flute length is 35mm, suitable for medium-depth holes.
Q: What drill sizes are available in this category?
This product is a 3.9mm size; other sizes are available in our Standard Jobber Drill range.
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Q: How do I know when it’s time to Replace or Resharpen the burr?
Replace or Resharpen it when you notice decreased cutting efficiency or visible wear on the cutting edges.
Why Choose Burrs4less?
Discover top reasons to pick our carbide burrs for your projects. Factory-direct quality at wholesale prices.
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Premium Quality
Pro-grade tungsten carbide burrs for durable, precise work.
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Affordable Pricing
Wholesale rates from USA manufacturer, high performance.
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Fast & Free Shipping
24-hour shipping, free on $100+ orders.
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Expert Guidance
Team assists in picking ideal burr for materials.
Ready for Order
Don’t miss out on upgrading your drill collection with a tool designed for precision and longevity. Add this Carbide Jobber Drill to your cart today and experience consistent performance that keeps your projects humming along smoothly. Your next successful drill starts here!
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