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 (47)
- P0Low-Carbon Steels, Long Chipping C < .25%; <125 HB; <530 N/mm^2 UTS(47)
- P1Low-Carbon Steels, Short Chipping C < .25%; <125 HB; <530 N/mm^2 UTS(47)
- P2Medium and High Carbon Steels C < .25%; <220 HB; <25 HRC; >530 N/mm^2 UTS(47)
- P3Alloy Steels & Tool Steels C > .25%; <330 HB; <35 HRC; 600-850 N/mm^2 UTS(47)
- P4Alloy Steels & Tool Steels C > .25%; 350-420 HB; 35-43 HRC; 850-1400 N/mm^2 UTS(47)
- P5Ferritic, Martensitic, and PH Stainless Steels <330 HB; <35 HRC; 600-900 N/mm^2 UTS(47)
- P6High Strength Ferritic, Martensitic, and PH Stainless Steels 350-450 HB; 35-43 HRC; 900-2400 N/mm^2 UTS(9)
- M Stainless Steel (47)
- M1Austenitic Stainless Steel 130-200 HB; <600 N/mm^2 UTS(47)
- M2High Strength Austenitic Stainless and Cast Stainless Steels 150-230 HB; <25 HRC; >600 N/mm^2 UTS(47)
- M3Duplex Stainless Steel 135-275 HB; <30 HRC; 500-1200 N/mm^2 UTS(47)
- K Cast Iron (47)
- K1Gray Cast Iron 120-290 HB; <32 HRC; 125-500 N/mm^2 UTS(47)
- K2Low and Medium Strength CGI and Ductile Irons 130-260 HB; <28 HRC; <600 N/mm^2 UTS(47)
- K3High Strength Ductile and Austempered Ductile Iron 180-350 HB; <43 HRC; >600 N/mm^2 UTS(47)
- N Non-Ferrous Materials (47)
- N1Wrought Aluminum (47)
- N2Low-Silicon Aluminum Alloys and Magnesium Alloys Si <12.2%(47)
- N3High-Silicon Aluminum Alloys Si >12.2%(47)
- N4Copper, Brass, Zinc-based on machinability index range of 70-100 (47)
- N5Nylon, Plastics, Rubbers, Phenolics, Resins, Fiberglass (47)
- N6Carbon, Graphite Composites, CFRP (47)
- N7MMC's (47)
- S High-Temp Alloys (47)
- S1Iron-Based, Heat-Resistant Alloys 160-260 HB; 25-48 HRC; 500-1200 N/mm^2 UTS(47)
- S2Cobalt-Based, Heat-Resistant Alloys 250-450 HB; 25-48 HRC; 1000-1450 N/mm^2 UTS(47)
- S3Nickel-Based, Heat Resistant Alloys 160-450 HB; <48 HRC; 600-1700 N/mm^2 UTS(47)
- S4Titanium and Titanium Alloys 300-400 HB; 33-43 HRC; 900-1600 N/mm^2 UTS(47)
- H Hardened Materials (45)
- H1Hardened Materials 44-48 HRC(45)
- H2Hardened Materials 48-55 HRC(45)
- H3Hardened Materials 56-60 HRC(45)
- H4Hardened Materials >60 HRC(45)
Applications
Applications
Countersinking (35)
Drilling (35)
Cutting Diameter
Cutting Diameter
- 0.156 in(1)
- 0.157 in(3)
- 0.188 in(1)
- 0.237 in(3)
- 0.25 in(1)
- 0.313 in(1)
- 0.315 in(3)
- 0.375 in(1)
- 0.394 in(3)
- 0.438 in(1)
- 0.473 in(3)
- 0.5 in(1)
- 0.551 in(3)
- 0.564 in(1)
- 0.63 in(3)
- 0.689 in(1)
- 0.709 in(2)
- 0.75 in(1)
- 0.814 in(1)
- 0.939 in(1)
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Cutting Diameter
Cutting Diameter
- 3.975 mm(1)
- 4.0 mm(3)
- 4.775 mm(1)
- 6.0 mm(3)
- 6.351 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)
- 12.701 mm(1)
- 14.0 mm(3)
- 14.3 mm(1)
- 16.0 mm(3)
- 17.475 mm(1)
- 18.0 mm(2)
- 19.05 mm(1)
- 20.651 mm(1)
- 23.826 mm(1)
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Connection Style
Connection Style
- Straight-Cylindrical (28)
- Whistle Notch 2 (7)
Number of Flutes
Number of Flutes
- 2 (35)
Internal Coolant Capability
Internal Coolant Capability
Over All Length [L]
Over All Length [L]
- 1.949 in(1)
- 1.969 in(1)
- 2.224 in(1)
- 2.677 in(1)
- 2.777 in(1)
- 3.071 in(1)
- 3.169 in(1)
- 3.248 in(1)
- 4.016 in(1)
- 4.061 in(2)
- 4.13 in(1)
- 4.252 in(1)
- 4.311 in(1)
- 4.313 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)
- 5.67 in(1)
- 5.75 in(1)
- 5.88 in(1)
- 6.061 in(1)
- 6.13 in(1)
- 6.311 in(1)
- 6.44 in(2)
- 6.55 in(1)
- 6.561 in(1)
- 6.625 in(1)
- 6.694 in(1)
- 7.25 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)
- 103.125 mm(2)
- 104.9 mm(1)
- 108.0 mm(1)
- 109.476 mm(1)
- 109.551 mm(1)
- 117.601 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)
- 149.35 mm(1)
- 153.925 mm(1)
- 155.701 mm(1)
- 160.275 mm(1)
- 163.576 mm(2)
- 166.375 mm(1)
- 166.625 mm(1)
- 168.275 mm(1)
- 170.0 mm(1)
- 184.15 mm(1)
- 190.5 mm(1)
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Corner Chamfer
Corner Chamfer
- 0.0 mm(12)
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Corner Chamfer
Corner Chamfer
- 0.0 in(12)
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Application
Grade Of Cutting Tool
Grade Of Cutting Tool
- CS5 (37)
- KC7015 (37)
- KC7215 (39)
- KC7315 (37)
- KC7320 (5)
- KC7410 (9)
- KCP15 (9)
- KCPM45 (7)
- KMF (37)
Hand Of Tool
Hand Of Tool
- R (35)
Wiper Insert
Wiper Insert
- N (12)
Drill Type
Drill Type
- 86-04 (8)
- 86-09 (27)
Countersunk Angle
Countersunk Angle
- 41.0 (37)
- 45.0 (45)
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Front-End
Insert Shape
Insert Shape
- COUNTERBORE/COUNTERSINK MISC (47)
- KENTIP DRILL (9)
Insert Geometry
Shape
Shape
- COUNTERBORE/COUNTERSINK MISC (12)
Cutting Tool Material
Cutting Tool Material
- H W (12)
Back-End
Connection Type
Connection Type
- CYLINDRICAL (35)
Back-End Diameter
Back-End Diameter
- 19.05 mm(6)
- 20.0 mm(3)
- 25.401 mm(4)
- 25.701 mm(1)
- 27.701 mm(1)
- 29.701 mm(1)
- 31.6 mm(1)
- 31.75 mm(8)
- 32.0 mm(4)
- 33.6 mm(1)
- 37.6 mm(1)
- 38.1 mm(2)
- 39.6 mm(1)
- 41.6 mm(1)
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Back-End Diameter
Back-End Diameter
- 0.75 in(6)
- 0.787 in(3)
- 1.0 in(4)
- 1.012 in(1)
- 1.091 in(1)
- 1.169 in(1)
- 1.244 in(1)
- 1.25 in(8)
- 1.26 in(4)
- 1.323 in(1)
- 1.48 in(1)
- 1.5 in(2)
- 1.559 in(1)
- 1.639 in(1)
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