Cutting Bur Shape

  • 14-degree Taper14-degree taper burs include Shape L (SL), Shape M (SM) burs. Shape L burs are tapered with a radius end, and are suitable for deburring and finishing surfaces and narrow contours. Shape M burs are tapered with a pointed end, and are suitable for deburring gear teeth and for deburring and finishing internal bevel edges and narrow contours.
  • 60-degree Cone60-degree cone burs, also called Shape J (SJ) burs, have a 60-degree cone with a pointed end, and are suitable for machining at acute angles and for countersinking or chamfering at a defined angle. They have a more acute angle than the 90-degree cone burs.
  • 90-degree Cone90-degree cone burs, also called Shape K (SK) burs, have a 90-degree cone with a pointed end and a flattened tip, and are suitable for machining at acute angles and for countersinking or chamfering at a defined angle. They have a less acute angle than the 60-degree cone burs.
  • BallBall burs, also known as Shape D (SD) burs, are round like a ball, and are suitable for deburring holes with round bottoms, convex slots, and curved surfaces, as well as enlarging small holes and preparing surfaces for build-up welding.
  • ConeCone burs are shaped like a cone, slightly more obtuse than a taper bur, and are suitable for machining at acute angles, and for countersinking or chamfering at defined angles.
  • CupCup burs have teeth inside of a cup-shaped end, and are suitable for finishing tipped points, such as a piece of wire.    
  • CylindricalCylindrical burs, also called barrel bars, include Shape A (SA), Shape B (SB), and Shape C (SC), and are cylindrical and come in several end types. Shape A has a plain end, and is suitable for deburring and milling straight edges and plain surfaces, as well as general-purpose chamfering applications. Shape B is cylindrical with an end cut, and is suitable for milling on sides and edges, as well as for deburring and finishing holes and slots with flat bottoms. Shape C has a radius end, and is suitable for deburring internal areas with shoulders, and milling and contouring holes, convex slots, and curved surfaces.
  • FlameFlame burs, also called Shape H (SH) burs, are cylindrical and taper at the end like a flame, and are suitable for deburring and finishing surfaces with elliptical contours.
  • Inverted ConeInverted cone, also called inverted taper or Shape N (SN) burs, are an inverted taper or cone with a plain end, and are suitable for edge machining in hard-to-reach areas, such as dovetail slots and gibs.
  • OvalOval burs, also called Shape E (SE), or egg burs, are shaped like an egg, and are suitable for deburring and finishing curved surfaces, and for preparing surfaces for build-up welding.
  • PearPear burs are shaped like pears with a tapered end, and are suitable for finishing curved surfaces.
  • Sheet Metal EdgingSheet metal edging burs are V-shaped, and are suitable for deburring the edges of sheet metal or a hole.
  • Thin DiscThin disc burs have thin discs, and are suitable for cutting and finishing surfaces.
  • Tree BurTree burs, also called Shape F (SF) and Shape G (SG), are shaped like a tree with tapered ends; Shape F has a radius end and is suitable for deburring and finishing deep, narrow contoured surfaces. Shape G has a pointed end, and is suitable for deburring and finishing curved top walls and narrow surface contours.