DCN R-8D :  SUMOCHAM 12xD drills with indexable heads, cylindrical shanks and internal coolant holes. Feature 4 standard drilling head types for drilling on 4 different material groups.  
 
 
Drilling COOLANT
  Designation D
minDo not mount smaller drilling heads than specified range for drill body.		 D
max
L
d
D3
L1
L4		 Po.
Size
  DCN 150-120-20R-8D  15.00  15.90  120.0  20.00  25.00  143.7  50.0  15.0
  DCN 160-128-20R-8D  16.00  16.90  128.0  20.00  25.00  153.3  50.0  16.0
  DCN 170-136-20R-8D  17.00  17.90  136.0  20.00  25.00  162.9  50.0  17.0

Prior to using the 8xD drill, it is recommended to drill a pre-hole by using a DCN 1.5xD drill or a centering drill.
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