ECR-B-MF :  Solid carbide roughing endmills with 4 and 6 flute, 45° helix, medium length (2xD). Used for high stock removal rates. Special design for hard (up to 65 HRc) materials and high temperature alloys.  
 
 
Shouldering Slotting Ramp down Helical interpolation Counter boring
  Designation
D

d

ap

L

Flute

Ha°

Rd°

ShankC-Cylindrical, W-Weldon

Ch
fz
(min)
fz
(max)

  Grade
  ECR-B6MF 20-42C20-104  20.00  20.00  42.00  104.00  6  45.0  5.0  C  0.70  0.05  0.11 IC900

The rougher's cutting edge profile has shallow serrations.
A very durable design which leaves only a small amount of material for the finishing cut.
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