1.812 - 1.937 Diameter Flat Bottom Drills
Available in 2:1 & 3:1 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
| 1.812 - 1.937 Dia. Flat Bottom Drills |
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| Tool # | D | Flutes | L | L-1 | D.O.C. | S | Coolant Plug | Insert | Screw | Wrench |
| FB-1812 | 1.812 | 2-1 Effective | 8.000 | 5.000 | 3.625 | 1.500 | NPT 1/4 | SPEB-532CB
or SPEB-532PA |
838T | T-20 |
| FB-1812-3 | 1.812 | 2-1 Effective | 9.875 | 6.875 | 5.625 | |||||
| FB-1875 | 1.875 | 2-1 Effective | 8.000 | 5.000 | 3.750 | |||||
| FB-1875-3 | 1.875 | 2-1 Effective | 9.875 | 6.875 | 5.625 | |||||
| FB-1937 | 1.937 | 2-1 Effective | 8.125 | 5.125 | 3.875 | |||||
| FB-1937-3 | 1.937 | 2-1 Effective | 10.125 | 7.125 | 5.812 | |||||
Insert Info.
| .625 I.C. Inserts 1.812 - 1.937 Dia. Flat Bottom Drills |
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| SPEB-532CB | SPEB-532PA | |||
| Grades | K11 / K22 | Grades | C55 | |
| I.C. | .625 | I.C. | .625 | |
| T | .187 | T | .187 | |
| R | .031 | R | .031 | |
Technical Data
| Speed and Feed Info. 1.812 - 1.937 Dia. Flat Bottom Drills |
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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, 17-4PH | K11 |
| Iron | Cast, Nodular | D66 / K11 |
| Iron | Ductile | K11 |
| Nickel & Titanium Alloys | Inconel, Hastelloy, TI-6AL-4V | K11 |
| Non-Ferrous Metals | Aluminum, Bronze, Brass | K22 / K11 |
| Insert Grade Description | |
| Grade | Description |
| D66 | Multi-Layer Dense Coating |
| K11 | Universal High Performance Dense Coating |
| K22 | Ultra Smooth Dense Coating - No Hone |
***Important***
- To maintain correct drill diameter in lathe applications
- indicate drill to spindle center
