1.437 - 1.750 Diameter Flat Bottom Drills

Available in 2:1 & 3:1 Ratio

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  • - Cuts a flat bottom within .001
  • - Coolant Thru - Side & Rear Ports
  • - Helical flute design
  • - Uses the same insert in both pockets
  • - 4 cutting edges per insert
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Tool Info.
1.437 - 1.750 Dia. Flat Bottom Drills
Tool # D Flutes L L-1 D.O.C. S Coolant Plug Insert
FB-1437 1.437 2-1 Effective 6.250 4.000 2.875 1.250 NPT 1/4 SPEB-432CB

or

SPEB-432PA
FB-1437-3 1.437 2-1 Effective 7.687 5.437 4.312
FB-1500 1.500 2-1 Effective 6.250 4.000 3.000
FB-1500-3 1.500 2-1 Effective 7.750 5.500 4.500
FB-1562 1.562 2-1 Effective 7.500 4.500 3.125 1.500
FB-1562-3 1.562 2-1 Effective 9.062 6.062 4.687
FB-1625 1.625 2-1 Effective 7.500 4.500 3.250
FB-1625-3 1.625 2-1 Effective 9.125 6.125 4.875
FB-1687 1.687 2-1 Effective 7.500 4.500 3.375
FB-1687-3 1.687 2-1 Effective 9.312 6.312 5.061
FB-1750 1.750 2-1 Effective 7.750 4.750 3.500
FB-1750-3 1.750 2-1 Effective 9.625 6.625 5.250

Insert Info.

Insert Info.
1.437 - 1.750 Dia. Flat Bottom Drills
SPEB-432CB   SPEB-432PA
Grades X33 / X40 Grade C55
I.C. .500 I.C. .500
T .187 T .187
R .031 R .031
Screw 638T Screw 638T
Wrench T-15 Wrench T-15

Technical Data

Speed & Feed Info.
1.437 - 1.750 Dia. Flat Bottom Drills
Material S.F.M. I.P.R.
Mild & Low Carbon Steel
Ex. 1018, 1020, 1117, 1141, 12L14
800 - 1200 .003 - .005
High Carbon & Alloy Steel
Ex. 1045, 4140, 4340, 52100, 8620
500 - 800 .003 - .005
Lower Carbon Tool Steel
Ex. P-20, H-13, S-7
400 - 700 .003 - .005
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
120 - 180 .002 - .003
Non-Ferrous Metal
Ex. Aluminum, Bronze, Brass
1000 - 2500 .004 - .008
Insert Grade Selection
Flat Bottom Drills
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 C55 / X33
Iron Ductile X33
Nickel & Titanium Alloys Inconel, Hastelloy, TI-6AL-4V X33
Non-Ferrous Metals Aluminum, Bronze, Brass X40 / X33
Insert Grade Description
Grade Description
C55 Multi-Layer Power Nitride Coating
X33 High Performance Nitride Coating
X40 Extremely Smooth Boride Coating

***Important***

  • To maintain correct drill diameter in lathe applications
  • indicate the drill to spindle center.
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