If you’re hunting for a reliable tungsten carbide burr that’s built to tackle metal like a pro, the SJ-81 is your new workshop buddy. Perfect for machinists and metalworkers who demand precision and durability.
This J Series Taper 60 Degree burr comes with a 3/16" head diameter and a compact length of cut, making it just right for detailed work. Whether you need aggressive material removal or a smooth finish, it’s got you covered with both standard and double cut options.
Durable and designed for versatility, the SJ-81 handles cast iron, steel, copper, and brass alloys effortlessly. Get ready to take on your next project with confidence and fine results every time.
Key Features
Available in both Standard Cut and Double Cut variants for versatility
Right hand spiral flute on single cut for rapid stock removal
Double cut combines right and left hand flutes for ultra-smooth finishes
3/16" head diameter ideal for precision taper shaping
7/32" length of cut providing a balanced cutting surface
Shank diameter of 3/16" suitable for standard rotary tools
Designed for use on cast iron, steel, copper, and brass alloys
Tapered 60-degree shape for accessing tight, angled spots
Excellent control with slight left hand action on double cut
Durable tungsten carbide construction for long tool life
Specifications
Shape / Type: J Series Taper 60 Deg
Cut Type: Standard Cut or Double Cut
Head Diameter: 3/16 inch
Length of Cut: 7/32 inch
Shank Diameter: 3/16 inch
Overall Length: Approximately 2 inches
Material Compatibility: Cast iron, steel, copper, brass alloys
Brand / Manufacturer: Burrs4Less
Made In: USA
SKU / Part Number: 109-12043
Frequently Asked Questions
Q: What metals can the SJ-81 burr be used on?
The SJ-81 is suitable for cast iron, steel, copper, and brass alloys.
Q: What’s the difference between Standard Cut and Double Cut?
Standard Cut has a single spiral flute for fast stock removal, while Double Cut combines right and left hand flutes for smoother finishes and better control.
Q: What size shank does this burr have?
It has a 3/16 inch shank diameter, fitting most standard rotary tools.
Q: Is the 60-degree taper good for tight spaces?
Yes, the taper shape allows for precise work in angled or hard-to-reach areas.
Q: Can I use this burr on wood or plastics?
The SJ-81 is designed primarily for metals and may not perform well on wood or plastics.
Q: How long is the cutting length?
The length of cut is 7/32 inch, giving you a decent area to work with.
Q: Will it fit my die grinder?
As long as your die grinder accepts a 3/16 inch shank, it will fit perfectly.
Q: Is burr overheating a concern?
Running at moderate speeds and allowing the burr to cool between uses prevents overheating.
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 Carbide Burrs Direct?
Discover top reasons to pick our carbide burrs for your projects. Factory-direct quality at wholesale prices.
High Heat Resistance
Solid carbide construction maintains hardness even at high operating temperatures.
Maximum Durability
Solid piece construction ensures heat resistance and minimal breakage.
Affordable Pricing
Wholesale rates from USA manufacturer, high performance.
Industrial Heritage
Decades of experience supplying tools to the aerospace and automotive sectors.
