1/2 60 DEGREE CONE CARBIDE BURR SJ51/2 60 DEGREE CONE CARBIDE BURR SJ5 850-5000, DOUBLE CUT, 1/4 SHANK 1/2" Major Diameter, 7/16" Flute Length (Appro.), 1/4" Shank Diameter, Double Cut Type, 60-Degree Included Angle. Carbide Burrs are designed for precision grinding and profiling. Our standard cut burrs are for general purpose applications where fair stock removal & smooth finish are required. The double cut type are specifically designed for tough applications and where maximum metal removal is required. Carbide burrs should typically be run at1,500 to 3,000 SFM. For burrs from 3/16 to 3/8 a 30,000 RPM grinder would be recommended. A 22,000 RPM grinder for burrs from 1/4" to 1/2". For larger burrs from 5/8" to 3/4 run around 15,000 RPM and 1" around 10,000 RPM. Slower speeds on all these burrs will work, but you will not get maximum performance from the tools.
100% Satisfaction Guarantee: At Mansion Tools, we want to be sure that the item you choose is the right one for you. Within 30 days of delivery of your order, you may return any merchandise purchased from Mansion Tools in its original condition with your email order confirmation or packing slip. Restocking fees may apply. On items over $275 shipping within the US, we will even arrange free pick up or pay for returns shipping.