Discover the SN-81, a compact powerhouse in our 81 Series of 3/16" solid carbide burrs. Perfectly designed for professionals who need precision and efficiency in metalworking, this miniature burr is a trusty companion for detailed tasks.
Whether you’re shaping, smoothing, or removing stock, the SN-81 is built to handle cast iron, steel, copper, and brass alloys with ease. It offers you a balance of speed and smooth finish options depending on your Selected cut type.
Ready to step up your grinding game? The SN-81 delivers rapid material removal combined with reliability and control, making it an essential tool for any metalworking pro aiming for quality and efficiency.
Key Features
Compact 3/16" head diameter ideal for precision work
Available in both Standard (Single) Cut and Double Cut options
Right hand spiral flute in Single Cut for rapid stock removal
Combination of right and left hand flutes in Double Cut for smooth finishes
Perfect for use on cast iron, steel, copper, and brass alloys
1/4" length of cut provides excellent control in tight spaces
3/16" overall length ensures reach into small or detailed areas
Solid carbide construction for long-lasting durability and sharpness
Designed to minimize chatter and maximize control during grinding
Made in the USA — high-quality craftsmanship you can trust
Specifications
Shape / Type: 81 Series Miniature Burr
Cut Type: Standard (Single) Cut or Double Cut
Head Diameter: 3/16" (0.1875 inches)
Shank Diameter: 3/16" (0.1875 inches)
Length of Cut: 1/4" (0.25 inches)
Overall Length (OAL): 3/16" x 2"
Material Compatibility: Cast iron, steel, copper, brass alloys
Brand / Manufacturer: Burrs4Less
Made In: USA
SKU / Part Number: 112-12053-M
Frequently Asked Questions
Q: What materials can the SN-81 burr be used on?
A: It works well on cast iron, steel, copper, and brass alloys.
Q: What's the difference between Single Cut and Double Cut?
A: Single Cut burrs have right hand flutes for fast stock removal, while Double Cut burrs combine right and left flutes for smoother finishes and better control.
Q: What size shank does this burr use?
A: It has a 3/16" shank diameter compatible with most rotary tool collets of the same size.
Q: How long is the cutting length?
A: The length of cut is 1/4" (0.25 inches), suitable for detailed work.
Q: Is this burr suitable for detailed metal shaping?
A: Yes, its miniature size and sharp carbide cutting edges make it perfect for precision work.
Q: Can I use the Double Cut burr for controlling chatter?
A: Yes, the Double Cut's slight left hand cutting action helps reduce chatter for smoother operation.
Q: Is the SN-81 made in the USA?
A: Yes, this product is manufactured in the USA ensuring quality standards.
Q: Does the burr require a special lubricant?
A: Using a cutting lubricant or coolant can help prolong tool life, especially with harder metals.
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.
