142° Spot Drills - Split Point design
Patent# 5,259,707
- - 2 Flutes Effective
- - Split point design for reduced cutting pressure
- - Designed for spotting along shoulders
- - Must be held in a Collet
| Tool Info. 142° Split Point Spot Drills |
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| Tool # | Min Dia. | Max Dia. | L | S | Washer | Screw | Wrench | Insert |
| SDCS-142-500 | .093 | .500 | 4.000 | .500 | 251207 | 325B | 1/16” Allen | 142-500 |
| SDCS-142-750 | .125 | .750 | 6.000 | .750 | 251603 | 638B | T-10 | 142-750 |
Insert Info.
142° Spot Drill Inserts - Split point design
| Insert Info. 142° Split Point Spot Drills |
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| Insert | Grade | |
| 142-500 | A1M | |
| 142-750 | A1M | |
Technical Data
Insert Loading Procedure
- Air Blast Pocket Clean
- Hold Insert in place (Chisel points to front & rear)
- - Flatted corners are to prevent loading insert backwards
- Tighten clamps until each one makes light contact
- Alternate tightening screws several times until screws are tight
| Speed and Feed Info. Split Point Spot Drills |
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| Material | S.F.M. | I.P.R. |
| Mild & Low Carbon Steel Ex. 1018, 1020, 1117, 1141, 12L14 |
500 - 700 | .002 - .004 |
| High
Carbon & Alloy Steel Ex. 1045, 4140, 4340, 52100, 8620 |
400 - 600 | .002 - .004 |
| Lower
Carbon Tool Steel Ex. P-20, H-13, S-7 |
400 - 600 | .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 |
200 - 400 | .002 - .004 |
| Iron Ex. Cast, Ductile, Nodular |
400 - 700 | .002 - .004 |
| Nickel
& Titanium Alloy Ex. Inconel, Hastelloy, TI-6AL-4V |
120 - 250 | .0012 - .0022 |
| Non-Ferrous
Metal Ex. Aluminum, Bronze, Brass |
1000 - 2000 | .003 - .008 |
| Insert Grade
Selection 142° Split Point Spot Drills |
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| Material | Material Examples | Preferred Grade |
| Mild & Low Carbon Steels | 1018, 1020, 1117, 1141, 12L14 | A1M |
| High Carbon & Alloy Steels | 1045, 4140, 4340, 52100, 8620 | A1M |
| Lower Carbon Tool Steels | P-20, H-13, S-7 | A1M |
| Tool Steels | A-2, A-6, D-2, M-2 | A1M |
| Stainless Steels | 303, 304, 316, 420, 15-5PH, 17-4PH | A1M |
| Iron | Cast, Ductile, Nodular | A1M |
| Nickel & Titanium Alloys | Inconel, Hastelloy, TI-6AL-4V | A1M |
| Non-Ferrous Metals | Aluminum, Bronze, Brass | A1M |
| Insert Grade Description 142° Split Point Spot Drills |
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| Grade | Description |
| A1M | Tin Coated |
