1/4" x 7/32" SD-1 Ball Carbide Burr, Double Cut, 6" Long

The same 01V double cut heads on a 6" shank, for work you cannot otherwise reach — deep cavities, the inside of tube and vessel, down inside a weld prep, anywhere the grinder body would hit the job before the burr did. The long shank is the whole point and it is also the thing to respect: a 6" burr flexes, so Walter halves the speed rating and sets a hard floor. Never run a 6" carbide burr below 20,000 RPM, and keep the feed light and steady — let the flutes cut rather than pushing the shank into a bow. This is the SD-1: a 1/4" ball head with a 7/32" length of cut on a 1/4" shank, on the 6" long series shank. Surface milling, deburring and contour work. Specifications: Head style: SD-1 — Ball Burr diameter: 1/4" Length of cut: 7/32" Shank diameter: 1/4" Cut: Double Cut Material: Tungsten Carbide Shank length: 6" Maximum speed: 35,000 RPM Part number: Walter 01V609 Country of origin: China Sold as: Each Features: 6" shank for deep and awkward access Solid tungsten carbide head on a high-strength brazed joint Speed rating is half that of a standard-length burr Never run below 20,000 RPM Applications: Deep cavity and internal bore work Inside tube, pipe and vessel Weld preparation down in a joint Anywhere the grinder body will not clear the workpiece For use on: Carbon Steel Stainless Steel Hardened Steel (45–60 Rc) Nickel Chrome Steel Weldments Cast Iron Titanium Inconel Brass Bronze Fiberglass Hard Rubber Plastics Runs in: Die Grinder Air Grinder