Walter
Drillco Carbide Burr Set No. 5, 10 Piece, 3/8" to 1/2" Burrs, 1/4" Shank, Single Cut70S005SC
$322.51/ea
In stockHomePor especialidadMetal Fabrication & Welding
Limas rotativas
Products107
BrandWalter
Quick answer
Walter and Drillco solid carbide burrs. Double cut for steel and stainless, aluminum cut for soft metals, hard alloy for 45-60 Rc. 1/4" and 1/8" shanks, a 6" long series, sets, and the DIALSPEED point grinder to run them in.
Walter
Drillco Carbide Burr Set No. 1, 8 Piece, 1/4" Burrs, 1/4" Shank, Double Cut70S001DC
$158.95/ea
In stock
Walter
1/8" x 1/2" SG-44 Pointed Tree Carbide Burr, Double Cut, 1/8" Shank01V023
$23.60/ea · 2 or more
In stock
Walter
1/8" x 1/2" SF-42 Round Nose Tree Carbide Burr, Double Cut, 1/8" Shank01V022
$23.60/ea · 2 or more
In stock
Walter
1/8" x 1/8" SD-42 Ball Carbide Burr, Double Cut, 1/8" Shank01V021
$23.60/ea · 2 or more
In stock
Walter
Drillco Carbide Burr Set No. 1, 8 Piece, 1/4" Burrs, 1/4" Shank, Single Cut70S001SC
$158.95/ea
In stock
Walter
1/2" x 1" SC-5 Cylindrical Ball Nose Carbide Burr, Double Cut, Hard Alloy01V033
$107.89/ea
In stock
Walter
1/8" x 1/2" SL-42 Cone, 14° Carbide Burr, Double Cut, 1/8" Shank01V024
$23.60/ea · 2 or more
In stock
Walter
1/8" x 9/16" SA-43 Cylindrical Carbide Burr, Double Cut, 1/8" Shank01V020
$23.60/ea · 2 or more
In stock
Walter
Drillco Carbide Burr Set No. 5, 10 Piece, 3/8" to 1/2" Burrs, 1/4" Shank, Double Cut70S005DC
$322.51/ea
In stock
Choosing a carbide burr
Solid tungsten carbide burrs for deburring, weld blending, die work and shaping metal. We stock Walter's heavy-duty 01V range and Drillco's 7000 sets, in double cut for steel and stainless, aluminum cut for soft metals, and a harder grade for hardened alloy.
Picking a cut. Double cut has two sets of crossed flutes: it breaks the chip small, grabs less and leaves a finer finish, which is why it is the default on ferrous metal. Single cut has one set of flutes and takes a bigger bite, for faster removal where finish matters less. Aluminum cut has widely spaced open flutes so soft metal clears instead of welding itself into the tool — use it on aluminum, brass, copper, magnesium and zinc.
Picking a head. SA cylindrical for flat work and deburring, SB for interior contours, SC ball nose for surface milling, SD ball and SE egg for cavities, SF and SG tree shapes for narrow contour work, SH flame for curves, SL and SM cones for angles, SN inverted cone for cutting from behind, SK for countersinking.
Running them safely
Speed is set by the burr diameter, not the grinder: 70,000 RPM at 1/4" down to 40,000 RPM at 5/8". The 6" long series runs at half those figures and must never go below 20,000 RPM. Keep the feed light and let the flutes cut — pushing a burr blues the work and rounds the teeth off.
Free shipping on orders over $200. Trade accounts can reorder in a click from My Toolbox, or call (833) 438-6657.
Steel & stainlessDouble cut
Crossed flutes, small chips, fine finish. The default on ferrous metal.See the range →Aluminum & soft metalsAluminum cut
Open flutes that shed the chip instead of loading up.See the range →Deep and awkward access6" long shank
Same heads, 6" reach. Half speed, never below 20,000 RPM.See the range →Detail work1/8" shank miniatures
For pencil grinders, small radii and tight internal corners.See the range →
Common questions
What is the difference between single cut and double cut?
Single cut has one set of flutes and removes metal faster, leaving a coarser finish. Double cut has two sets crossing each other, which breaks the chip small, grabs far less and finishes better. Double cut is the one most shops run on steel and stainless.
Why is there a separate burr for aluminum?
Soft metals smear and weld into a standard burr until it stops cutting and starts rubbing. An aluminum cut burr has widely spaced, single-direction flutes with a lot of chip clearance, so the chip throws clear. Use it on aluminum, brass, copper, magnesium, zinc and carbon fibre.
How fast should I run a carbide burr?
By diameter, not by what the grinder will do: 70,000 RPM at 1/4", 68,000 at 5/16", 66,000 at 3/8", 58,000 at 7/16", 50,000 at 1/2" and 40,000 at 5/8". Halve all of those for the 6" long series, and never run a 6" burr below 20,000 RPM.
What shank do I need?
1/4" is standard and fits any die grinder. 1/8" is for pencil grinders and detail work. Match the shank to the collet you have.
Which head shape should I pick?
SA cylindrical for flat surfaces and deburring; SC ball nose for surface milling and contours; SD ball and SE egg for cavities; SF and SG tree shapes for narrow contour work; SH flame for curves; SL and SM cones for angled work; SN inverted cone to cut from behind; SK for countersinking.
Know-how for Limas rotativas
All guides →
Buying for a crew?
Call 833-438-6657, 8 AM to 4 PM MST. We know the parts, not just the part numbers.