According to ISO 7755 international standard, carbide rotary burrs are manufactured in various standard head shapes, including SA, SB, SC, SD, SE, SF, SG, SH, SL SJ SK SM SN.

Each shape is designed for different working spaces, curved surfaces, internal angles and finishing requirements. Choosing the correct burr shape ensures stable grinding, high efficiency and no damage to workpieces.

We hereby present a detailed introduction to commonly used rotary burr profiles.

SA Cylinder Flat End

Straight cylindrical shape with flat end. Ideal for surface grinding, deburring, weld cleaning and large stock removal. Most universal type.

SB Cylinder Rounded End

Cylinder with smooth round top. Perfect for internal arc polishing, narrow cavity finishing and avoiding scratches on curved workpieces.

SC Ball Shape

Full spherical head. Widely used for radius polishing, fillet chamfering, mold curved surface finishing and irregular arc grinding.

SD Oval / Torpedo Shape

Long elliptical curved head. Suitable for deep hole grinding, pipe inner wall finishing and complex cavity processing.

SE Flame Shape

Slim curved flame profile. Great for narrow gaps, grooves, precision mold trimming and tight space polishing.

SF Cone Rounded End

Tapered shape with round tip. Used for internal angle chamfering, groove cleaning and bevel finishing.

SG Cone Pointed End

Sharp narrow taper. Excellent for dead corner cleaning, deep narrow slots and tiny internal angle grinding.

SH Wheel Shape

Thin disc type. Special for groove bottom smoothing, slot trimming and narrow flat surface finishing.

Meanwhile, they are available in standard short shank and extended long shank.

Extended Long Shank

Specially designed for deep holes, deep cavities, inner pipeline and inaccessible narrow spaces. It can easily reach hidden working positions without interference.

We support customized short shank & extra long shank, all tooth cuts and full shape OEM services for global distributors.

If you are looking for a reliable long-term carbide burr supplier, please contact us freely for detailed quotation including MOQ, price, payment and delivery time.