2.750 - 3.500 Diameter Flat Bottom Drills
Available in 2:1 ratio
- - 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
| Tool Info. 2.750 - 3.500 Dia. Flat Bottom Drills |
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| Tool # | D | Flutes | L | L-1 | D.O.C. | S | Coolant Plug | Insert | Screw | Wrench |
| FB-2750 | 2.750 | 2-1 Effective | 10.125 | 6.625 | 5.500 | 2.000 | NPT 3/8 | SPEB-842CB | 1412T | T-532 |
| FB-2750-3 | 2.750 | 2-1 Effective | 13.625 | 10.125 | 8.250 | |||||
| FB-2875 | 2.875 | 2-1 Effective | 11.250 | 7.750 | 5.750 | |||||
| FB-2875-3 | 2.875 | 2-1 Effective | 14.000 | 10.500 | 8.625 | |||||
| FB-3000 | 3.000 | 2-1 Effective | 10.625 | 7.125 | 6.000 | |||||
| FB-3000-3 | 3.000 | 2-1 Effective | 14.000 | 10.500 | 9.000 | |||||
| FB-3250 | 3.250 | 2-1 Effective | 11.625 | 8.125 | 6.500 | |||||
| FB-3250-3 | 3.250 | 2-1 Effective | 14.875 | 11.375 | 9.750 | |||||
| FB-3500 | 3.500 | 2-1 Effective | 11.625 | 8.125 | 7.000 | |||||
| FB-3500-3 | 3.500 | 2-1 Effective | 15.375 | 11.875 | 10.500 | |||||
Insert Info.
| Insert Info. 2.750 - 3.500 Dia. Flat Bottom Drills |
|
| SPEB-842CB | |
| Grade | K11 |
| I.C. | 1.000 |
| T | .250 |
| R | .031 |
Technical Data
| Speed and Feed Info. 2.750 - 3.500 Dia. Flat Bottom Drill |
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| 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 |
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| Material | Material Examples | Preferred Grade |
| Mild & Low Carbon Steels | 1018, 1020, 1117, 1141, 12L14 | K11 |
| High Carbon & Alloy Steels | 1045, 4140, 4340, 52100, 8620 | K11 |
| Lower Carbon Tool Steels | P-20, H-13, S-7 | K11 |
| Tool Steels | A-2, A-6, D-2, M-2 | K11 |
| Stainless Steels | 303, 304, 316, 420, 15-5PH, 17-4 | K11 |
| Iron | Cast, Nodular | K11 |
| Iron | Ductile | K11 |
| Nickel & Titanium Alloys | Inconel, Hastelloy, TI-6AL-4V | K11 |
| Non-Ferrous Metals | Aluminum, Bronze, Brass | K11 |
| Insert Grade Description | |
| Grade | Description |
| K11 | Universal High Performance Dense Coating |
***Important***
- To maintain correct drill diameter in lathe applications
- indicate the drill to spindle center.
