Sera - Mills

.990 - 1.990 Dia. Roughing Mills

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  • - .010 Undersize for finishing
  • - Serrated insert edge reduces tool pressure
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IMPORTANT:

  • High Pressure Flood Coolant or Air Blast Required to Disperse Chip and cool the tool.
  • Recutting chips will cause early insert failure
Tool Info.
Sera - Mills
Tool # D Flutes Inserts L L-1 D.O.C. S Screw Wrench Inserts
SM-100 .990 2-1 Effective 2 3.000 1.000 .370 .750 538T T-10 SNMC-333B
SNMC-333H
SM-125 1.240 3-1.5 Effective 3 3.000 1.000 .370 .750
SM-150 1.490 4-2 Effective 4 3.000 1.000 .370 .750
SM-200 1.990 6-3 Effective 6 3.000 1.000 .370 .750

Insert Info. 

Two Insert Styles To Choose From

  • SNMC - B: General purpose roughing insert with serrations molded on the side of the insert.
  • SNGC - H: Roughing inserts with serrations molded on the top and periphery ground for Titanium, Stainless & Nickel
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Insert Info.
Sera-Mills
SNMC - B Inserts
Insert # I.C. T R Grade
SNMC-333B .375 .187 .047 X33
SNGC - H Inserts
Insert # I.C. T R Grade
SNGC-333H .375 .187 .047 X33

Technical Data

Speed and Feed Info.
Sera - Mills
Material S.F.M. I.P.T.
Mild & Low Carbon Steel
Ex. 1018, 1020, 1117, 1141, 12L14
600 - 1200 .002 - .006
High Carbon & Alloy Steel
Ex. 1045, 4140, 4340, 52100, 8620
500 - 800 .002 - .004
Lower Carbon Tool Steel
Ex. P-20, H-13, S-7
400 - 700 .002 - .004
Tool Steel
Ex. A-2, A-6, D-2, M-2
300 - 600 .002 - .004
Stainless Steel
Ex. 304, 316, 420, 15-5PH, 17-4PH
300 - 600 .002 - .004
Iron
Ex. Cast, Ductile, Nodular
600 - 1000 .003 - .006
Nickel & Titanium Alloy
Ex. Inconel, Hastelloy, TI-6AL-4V
100 - 180 .001 - .003
Insert Grade Selection
Material Material Examples Preferred Grade
Mild & Low Carbon Steels 1018, 1020, 1117, 1141, 12L14 X33
High Carbon & Alloy Steels 1045, 4140, 4340, 52100, 8620 X33
Lower Carbon Tool Steels P-20, H-13, S-7 X33
Tool Steels A-2, A-6, D-2, M-2 X33
Stainless Steels 303, 304, 316, 420, 15-5PH, 17-4PH X33
Iron Cast, Nodular X33
Iron Ductile X33
Nickel & Titanium Alloys Inconel, Hastelloy, TI-6AL-4V X33
Insert Grade Description
Grade Description
X33 High Performance Nitride Coating
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