Click here for insert grade descriptions
 Insert #
 I.C.
T
R
Insert Grades
 .250
 .125
 .015
 X33, X40
Insert
Information
Flat Bottom Drill
Speed & Feed Info.
Advantages of K-Tool Inc.
Flat Bottom Drills
 Applications: Drilling - Counterboring - Scalloping

Standard Tools Can be Modified to any Diameter Between .472 - 3.500 in 2-3 Days!

 (1) Drill From Solid or Counterbore an Existing Hole
 (2) Cut a Flat Bottom Within .001
 (3) Extremely Free Cutting High Positive Geometry
 (4) Excellent Part Finishes
 (5) 4 Cutting Edges Per Insert
 (6) Able Drill Holes Entering on Angles & Offset Radii
 (7) Inboard Insert Drills Center, Outboard Insert Cuts Outside Diameter
 (8) Drills .500 Dia. to 2.500 Dia. Available in 2:1 & 3:1 Length to Dia. Ratio
 (9) Drills 2.750 Dia. to 3.500 Dia. Available in 2:1 Length to Dia. Ratio
 (10) R.H. Helix Flutes with Large Hole Through Coolant, for Chip Evacuation
 (11) Two Coolant Ports for Lathe & Through Spindle Coolant Machines
 (12) Lined up Outside Insert with Lathe Axis for Counter Boring After Drilling
E-mail: Info@ktoolinc.com
Phone# 800-377-3056
SPEB / Chipbreaker Inserts
K-Tool, Inc. Indexable carbide insert SPEB-chipbreaker insert drawing
Available Tool
Modifications
- Modified Diameters
- Center cutting Insert Shifted
- Reduced shank Diameters
Normal Delivery
On Modified Tools
is 2 - 3 days
Drilling
thru Hole
Scalloping
Counterboring
Flat Bottom Drill Application: Counterboring Flat Bottom Drill: Drilling A Thru Hole Flat Bottom Drill Application: Scalloping
 Material
S.F.M.
I.P.R.
Mild & Low Carbon Steel
Ex. 1018, 1020, 1117,1141,12L14
  800 -1200 
  .002 - .004 
High Carbon & Alloy Steel
Ex. 1045, 4140, 4340, 52100,8620
  500 - 800 
  .002 - .003 
Lower Carbon Tool Steel
Ex. P-20, H-13, S-7
  400 - 700 
  .002 - .003 
Tool Steel
Ex. A-2, A-6, D-2, M-2
  300 - 600  
  .001 - .003 
Stainless Steel
Ex.304, 316, 420, 15-5PH, 17-4PH
  300 - 600  
  .001 - .003 
Iron
Ex. Cast, Ductile, Nodular
  600 -1000
  .002 - .005 
Nickel &Titanium Alloy
Ex. Inconel, Hastelloy, TI-6AL-4V
  120 -180  
  .001 - .002 
Non-Ferrous metals
Ex. Aluminum, Bronze, Brass 
  1000 - 2500
  .003 - .006 
.687 - .812 Dia.
0
to remove nib
K-Tool, Inc.
FB
Flat Bottom
Drills
 Tool #
 D  
Flutes
 L-1 
 D.O.C.  
 S
Insert
Coolant Plug
 Screw  
 Wrench  
FB-687 
 .687 
 2 Flutes \ 1 Effective  
 4.250 
 2.250 
 1.375 
 .750 
 SPEB-221CB
 NPT 1/8
314T
   T-8
FB-687-3 
 .687 
 2 Flutes \ 1 Effective  
 4.937 
 2.937 
 2.062 
 .750 
 SPEB-221CB
 NPT 1/8
314T
   T-8
FB-718
 .718 
 2 Flutes \ 1 Effective  
 4.250 
 2.250 
 1.437
 .750 
 SPEB-221CB
 NPT 1/8
314T
   T-8
FB-718-3
 .718 
 2 Flutes \ 1 Effective  
 5.062 
 3.062 
 2.187 
 .750 
 SPEB-221CB
 NPT 1/8
314T
   T-8
FB-750
 .750 
 2 Flutes \ 1 Effective  
 4.750 
 2.500 
 1.500
 1.000 
 SPEB-221CB
 NPT 1/8
314T
   T-8
FB-750-3
 .750 
 2 Flutes \ 1 Effective  
 5.500 
 3.250 
 2.250
 1.000 
 SPEB-221CB
 NPT 1/8
314T
   T-8
FB-781
 .781 
 2 Flutes \ 1 Effective  
 4.750 
 2.500 
 1.562
 1.000 
 SPEB-221CB
 NPT 1/8
314T
   T-8
FB-781-3
 .781 
 2 Flutes \ 1 Effective  
 5.500 
 3.250 
 2.343
 1.000 
 SPEB-221CB
 NPT 1/8
314T
   T-8
FB-812
 .812 
 2 Flutes \ 1 Effective  
 4.750 
 2.500 
 1.625
 1.000 
 SPEB-221CB
 NPT 1/8
314T
   T-8
FB-812-3
 .812 
 2 Flutes \ 1 Effective  
 5.625 
 3.375 
 2.437
 1.000 
 SPEB-221CB
 NPT 1/8
314T
   T-8
Flat Bottom Drill Application: Drilling on an angled surface Flat Bottom Drill Application: Drilling on a rounded surface
drilling from solid
on an angled surface
drilling from solid
on a rounded
or uneven surface
k-tool_doc155002.png
S
L
L-1
D.O.C.
D
Coolant thru standard
Side & rear
coolant ports
To maintain correct drill diamter
indicate drill to spindle center
Do Not Drill stacked plates
Do Not Drill
Stacked Plates
For lathe applications
Flat Bottom Drill Application: Drilling A Flat Bottom
Flat Bottom
Drilling
k-tool_doc155001.png K-Tool, Inc. Indexable Flat Bottom Drill
Back

Flat Bottom Drills
.687 to .812 Diameter

2:1 & 3:1 Ratio

Screw Torque
Information
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Flat Bottom Drill Video
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K-Tool, Inc.
Made in the USA
Phone# 800-377-3056
E-mail: Info@ktoolinc.com