SEFAS System
The SEFAS™ combination drilling system allows for centering, drilling, and chamfering in a single operation. The high-performance design and flexibility can be used to adapt the tool for varying hole geometries and provide full through-coolant capabilities. SEFAS chamfering bodies provide additional workpiece and workholding clearance during operations. The chamfer rings can be mounted to Kennametal hydraulic chucks for optimal drill performance and increased productivity. SEFAS chamfering inserts are available and can be used on various materials and with KenTIP™ or KSEM™ drills.
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Workpiece Material
Workpiece Material
- P Steel (49)
- P6High Strength Ferritic, Martensitic, and PH Stainless Steels 350-450 HB; 35-43 HRC; 900-2400 N/mm^2 UTS(12)
- P3Alloy Steels & Tool Steels C > .25%; <330 HB; <35 HRC; 600-850 N/mm^2 UTS(49)
- P1Low-Carbon Steels, Short Chipping C < .25%; <125 HB; <530 N/mm^2 UTS(49)
- P2Medium and High Carbon Steels C < .25%; <220 HB; <25 HRC; >530 N/mm^2 UTS(49)
- P4Alloy Steels & Tool Steels C > .25%; 350-420 HB; 35-43 HRC; 850-1400 N/mm^2 UTS(49)
- P5Ferritic, Martensitic, and PH Stainless Steels <330 HB; <35 HRC; 600-900 N/mm^2 UTS(49)
- P0Low-Carbon Steels, Long Chipping C < .25%; <125 HB; <530 N/mm^2 UTS(49)
- M Stainless Steel (49)
- M1Austenitic Stainless Steel 130-200 HB; <600 N/mm^2 UTS(49)
- M2High Strength Austenitic Stainless and Cast Stainless Steels 150-230 HB; <25 HRC; >600 N/mm^2 UTS(49)
- M3Duplex Stainless Steel 135-275 HB; <30 HRC; 500-1200 N/mm^2 UTS(49)
- K Cast Iron (49)
- K2Low and Medium Strength CGI and Ductile Irons 130-260 HB; <28 HRC; <600 N/mm^2 UTS(49)
- K3High Strength Ductile and Austempered Ductile Iron 180-350 HB; <43 HRC; >600 N/mm^2 UTS(49)
- K1Gray Cast Iron 120-290 HB; <32 HRC; 125-500 N/mm^2 UTS(49)
- N Non-Ferrous Materials (49)
- N2Low-Silicon Aluminum Alloys and Magnesium Alloys Si <12.2%(49)
- N3High-Silicon Aluminum Alloys Si >12.2%(49)
- N4Copper, Brass, Zinc-based on machinability index range of 70-100 (49)
- N7MMC's (49)
- N1Wrought Aluminum (49)
- N5Nylon, Plastics, Rubbers, Phenolics, Resins, Fiberglass (49)
- N6Carbon, Graphite Composites, CFRP (49)
- S High-Temp Alloys (49)
- S3Nickel-Based, Heat Resistant Alloys 160-450 HB; <48 HRC; 600-1700 N/mm^2 UTS(49)
- S1Iron-Based, Heat-Resistant Alloys 160-260 HB; 25-48 HRC; 500-1200 N/mm^2 UTS(49)
- S4Titanium and Titanium Alloys 300-400 HB; 33-43 HRC; 900-1600 N/mm^2 UTS(49)
- S2Cobalt-Based, Heat-Resistant Alloys 250-450 HB; 25-48 HRC; 1000-1450 N/mm^2 UTS(49)
- H Hardened Materials (49)
- H4Hardened Materials >60 HRC(49)
- H1Hardened Materials 44-48 HRC(49)
- H2Hardened Materials 48-55 HRC(49)
- H3Hardened Materials 56-60 HRC(49)
- C CFRP Materials (1)
- C1CFRP, CFRP / CFRP (1)
- C2CFRP / Aluminium CFRP / Non-Ferrous (1)
- C4CFRP / Stainless Steel (1)
- C3CFRP / Titanium CFRP / High Temp (1)
Applications
Applications
Countersinking (37)
Drilling (37)
Cutting Diameter
Cutting Diameter
- 0.156 in(1)
- 0.157 in(3)
- 0.188 in(1)
- 0.236 in(3)
- 0.25 in(1)
- 0.313 in(1)
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- 0.375 in(1)
- 0.394 in(3)
- 0.438 in(1)
- 0.472 in(3)
- 0.5 in(1)
- 0.551 in(3)
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- 0.63 in(3)
- 0.688 in(1)
- 0.709 in(2)
- 0.75 in(1)
- 0.813 in(1)
- 0.875 in(1)
- 0.938 in(1)
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Cutting Diameter
Cutting Diameter
- 3.96 mm(1)
- 4.0 mm(3)
- 4.775 mm(1)
- 6.0 mm(3)
- 6.35 mm(1)
- 7.95 mm(1)
- 8.0 mm(3)
- 9.525 mm(1)
- 10.0 mm(3)
- 11.125 mm(1)
- 12.0 mm(3)
- 12.7 mm(1)
- 14.0 mm(3)
- 14.3 mm(1)
- 15.875 mm(1)
- 16.0 mm(3)
- 17.475 mm(1)
- 18.0 mm(2)
- 19.05 mm(1)
- 20.65 mm(1)
- 22.225 mm(1)
- 23.825 mm(1)
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Connection Style
Connection Style
- Straight-Cylindrical (30)
- Whistle Notch 2 (7)
Number of Flutes
Number of Flutes
- 2 (37)
Internal Coolant Capability
Internal Coolant Capability
Over All Length [L]
Over All Length [L]
- 1.949 in(1)
- 1.968 in(1)
- 2.224 in(1)
- 2.677 in(1)
- 2.775 in(1)
- 3.071 in(1)
- 3.169 in(1)
- 3.248 in(1)
- 4.016 in(1)
- 4.06 in(2)
- 4.13 in(1)
- 4.252 in(1)
- 4.31 in(1)
- 4.3125 in(1)
- 4.63 in(1)
- 4.803 in(1)
- 5.236 in(1)
- 5.394 in(1)
- 5.551 in(1)
- 5.63 in(1)
- 5.669 in(1)
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- 6.06 in(1)
- 6.13 in(1)
- 6.31 in(1)
- 6.44 in(2)
- 6.5 in(1)
- 6.56 in(2)
- 6.625 in(1)
- 6.6875 in(1)
- 7.25 in(1)
- 7.375 in(1)
- 7.5 in(1)
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Over All Length [L]
Over All Length [L]
- 49.5 mm(1)
- 50.0 mm(1)
- 56.5 mm(1)
- 68.0 mm(1)
- 70.5 mm(1)
- 78.0 mm(1)
- 80.5 mm(1)
- 82.5 mm(1)
- 102.0 mm(1)
- 103.12 mm(1)
- 103.124 mm(1)
- 104.902 mm(1)
- 108.0 mm(1)
- 109.474 mm(1)
- 109.538 mm(1)
- 117.6 mm(1)
- 122.0 mm(1)
- 133.0 mm(1)
- 137.0 mm(1)
- 141.0 mm(1)
- 143.0 mm(1)
- 144.0 mm(1)
- 146.05 mm(1)
- 149.352 mm(1)
- 153.924 mm(1)
- 155.7 mm(1)
- 160.27 mm(1)
- 163.576 mm(1)
- 163.58 mm(1)
- 165.1 mm(1)
- 166.37 mm(1)
- 166.624 mm(1)
- 168.275 mm(1)
- 169.99 mm(1)
- 184.15 mm(1)
- 187.325 mm(1)
- 190.5 mm(1)
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Corner Chamfer
Corner Chamfer
- 0.0 mm(12)
to
Corner Chamfer
Corner Chamfer
- 0.0 in(12)
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Application
Grade Of Cutting Tool
Grade Of Cutting Tool
- CS5 (39)
- KC7015 (39)
- KC7215 (41)
- KC7315 (39)
- KC7320 (5)
- KC7325 (1)
- KC7410 (12)
- KCC10 (1)
- KCMS15 (1)
- KCP15 (11)
- KCP15A (1)
- KCPM45 (8)
- KMF (39)
- KN15 (1)
Hand Of Tool
Hand Of Tool
- R (37)
Wiper Insert
Wiper Insert
- N (12)
Drill Type
Drill Type
- 86-04 (37)
Countersunk Angle
Countersunk Angle
- 41.0 (39)
- 45.0 (47)
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Front-End
Insert Shape
Insert Shape
- COUNTERBORE/COUNTERSINK MISC (49)
- KENTIP DRILL (11)
- KENTIP FUSION DRILL (1)
Insert Geometry
Shape
Shape
- COUNTERBORE/COUNTERSINK MISC (12)
Cutting Tool Material
Cutting Tool Material
- H W (12)
Back-End
Connection Type
Connection Type
- CYLINDRICAL (37)
Back-End Diameter
Back-End Diameter
- 19.05 mm(6)
- 20.0 mm(3)
- 25.4 mm(4)
- 25.7 mm(1)
- 27.7 mm(1)
- 29.7 mm(1)
- 31.6 mm(1)
- 31.75 mm(9)
- 32.0 mm(4)
- 33.6 mm(1)
- 37.6 mm(1)
- 38.1 mm(3)
- 39.6 mm(1)
- 41.6 mm(1)
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Back-End Diameter
Back-End Diameter
- 0.75 in(6)
- 0.7874 in(3)
- 1.0 in(4)
- 1.0118 in(1)
- 1.0906 in(1)
- 1.1693 in(1)
- 1.2441 in(1)
- 1.25 in(9)
- 1.2598 in(4)
- 1.3228 in(1)
- 1.4803 in(1)
- 1.5 in(3)
- 1.5591 in(1)
- 1.6378 in(1)
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