If you’re hunting for a reliable miniature burr that packs a punch, the SJ-81 is crafted just for you. Perfectly sized with a 3/16" head diameter, this burr fits snugly into tight spaces without compromising performance.
Ideal for metalworkers and machinists, this burr tackles materials like cast iron, steel, copper, and brass with ease. Whether you choose the Standard Cut or Double Cut, you’re set for both rapid stock removal and smooth finishes.
Durability meets precision in the SJ-81—meaning you get excellent control, efficient cutting, and a tool designed to keep you powering through your projects. It’s a smart choice for professionals who value quality in every turn.
Key Features
3/16" head diameter perfect for intricate work
Choice of Single Cut or Double Cut for versatility
Right hand spiral flute in Single Cut designed for rapid stock removal
Double Cut combines right and left hand flutes for ultra-smooth finishes
Effective on a variety of metals including cast iron, steel, copper, and brass
Compact length of cut at 7/32" for precise metal shaping
Overall length of 3/16" x 2" balances control and reach
Solid carbide construction ensures longevity and wear resistance
Slight left-hand cutting action in Double Cut for better burr and grinder control
Designed to reduce tool chatter for cleaner cuts and smoother results
Specifications
Shape / Type: Miniature Burr, 81 Series
Cut Type: Standard Cut (Single Cut) or Double Cut
Head Diameter: 3/16"
Length of Cut: 7/32"
Overall Length: 3/16" x 2"
Material Compatibility: Cast iron, steel, copper, brass alloys
Brand / Manufacturer: Burrs4Less
Made In: USA
SKU / Part Number: 109-12043-M
Frequently Asked Questions
Q: What’s the difference between Single Cut and Double Cut?
Single Cut burrs have right hand spiral flutes great for rapid stock removal; Double Cut burrs combine right and left hand flutes for smoother finishes and better control.
Q: What materials can the SJ-81 burr work on?
It’s suitable for cast iron, steel, copper, and brass alloys.
Q: What is the head diameter of this burr?
It has a 3/16" head diameter ideal for detailed machining.
Q: What is the overall length of the SJ-81?
The burr measures 3/16" x 2" overall length, offering a good balance of reach and control.
Q: Is this burr compatible with my rotary tool?
If your tool accepts a 3/16" shank, the SJ-81 will fit perfectly.
Q: How do I properly clean the burr?
Use a wire brush to clean metal debris after use, ensuring better cutting performance and longer tool life.
Q: Can I use the double cut burr for both roughing and finishing?
Double Cut burrs are best for a smooth finish and controlled cutting, less for aggressive stock removal.
Q: What safety gear should I use?
Wear goggles and gloves to protect yourself from sharp metal shavings and debris.
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.
