Milling tool

Details Milling tool Milling tool

E - Fixed Constructions

21

B

90/39

E21B 10/56 (2006.01) E21B 29/00 (2006.01)

Patent

CA 1280633

MILLING TOOL Abstact This milling tool for underground work consists of a tool body which has a plurality of cutter blades. Each cutter blade has a negative axial rake and an essentially constant nega- tive radial rake. In addition, each cutter arm has a close pack- ing of cylindrical cutting grade tungsten carbide inserts set at a lead angle of about 0 to 10 degrees. The inserts are also preferably vertically offset on adjacent cutting blades.

543721

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