Flat Bottom Drills • Flat-Bottom Applications
Flat bottom drills with through coolant offer precision and efficiency in holemaking operations. They excel in creating flat-bottom holes with accuracy and consistency across multiple workpiece materials. Kennametal drills are available in FBS for non-ferrous materials, FBG for steel and cast iron, and FBL for stainless steel and high-temperature alloys. These drilling tools feature a unique design with two effective cutting edges over the center, enabling high feed rates and optimal performance. Additionally, these application-specific solid carbide drills integrate two operations into one --removing the need for a 180° end mill in flat-bottom drilling or for preparing inclined or curved surfaces for drilling. This innovative approach streamlines the process, saving time and enhancing productivity. With the ability to create true flat-bottom holes from the outer diameter to the center, these drills are reliable solutions for your holemaking needs.
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Workpiece Material
Workpiece Material
- P Steel (155)
- P0Low-Carbon Steels, Long Chipping C < .25%; <125 HB; <530 N/mm^2 UTS(101)
- P1Low-Carbon Steels, Short Chipping C < .25%; <125 HB; <530 N/mm^2 UTS(101)
- P2Medium and High Carbon Steels C < .25%; <220 HB; <25 HRC; >530 N/mm^2 UTS(101)
- P3Alloy Steels & Tool Steels C > .25%; <330 HB; <35 HRC; 600-850 N/mm^2 UTS(101)
- P4Alloy Steels & Tool Steels C > .25%; 350-420 HB; 35-43 HRC; 850-1400 N/mm^2 UTS(101)
- P5Ferritic, Martensitic, and PH Stainless Steels <330 HB; <35 HRC; 600-900 N/mm^2 UTS(155)
- P6High Strength Ferritic, Martensitic, and PH Stainless Steels 350-450 HB; 35-43 HRC; 900-2400 N/mm^2 UTS(155)
- M Stainless Steel (54)
- M1Austenitic Stainless Steel 130-200 HB; <600 N/mm^2 UTS(54)
- M2High Strength Austenitic Stainless and Cast Stainless Steels 150-230 HB; <25 HRC; >600 N/mm^2 UTS(54)
- M3Duplex Stainless Steel 135-275 HB; <30 HRC; 500-1200 N/mm^2 UTS(54)
- K Cast Iron (101)
- K1Gray Cast Iron 120-290 HB; <32 HRC; 125-500 N/mm^2 UTS(101)
- K2Low and Medium Strength CGI and Ductile Irons 130-260 HB; <28 HRC; <600 N/mm^2 UTS(101)
- K3High Strength Ductile and Austempered Ductile Iron 180-350 HB; <43 HRC; >600 N/mm^2 UTS(101)
- N Non-Ferrous Materials (57)
- N1Wrought Aluminum (57)
- N2Low-Silicon Aluminum Alloys and Magnesium Alloys Si <12.2%(57)
- N3High-Silicon Aluminum Alloys Si >12.2%(57)
- N4Copper, Brass, Zinc-based on machinability index range of 70-100 (57)
- S High-Temp Alloys (54)
- S1Iron-Based, Heat-Resistant Alloys 160-260 HB; 25-48 HRC; 500-1200 N/mm^2 UTS(54)
- S2Cobalt-Based, Heat-Resistant Alloys 250-450 HB; 25-48 HRC; 1000-1450 N/mm^2 UTS(54)
- S3Nickel-Based, Heat Resistant Alloys 160-450 HB; <48 HRC; 600-1700 N/mm^2 UTS(54)
- S4Titanium and Titanium Alloys 300-400 HB; 33-43 HRC; 900-1600 N/mm^2 UTS(54)
Applications
Applications
Convex Drilling (212)
Corner Style SquareEnd Drilling (212)
CornerStyle Chamfer Drilling (212)
Counterboring (212)
Countersinking (211)
Cross Hole Drilling (212)
Drilling (212)
Flat Bottom Drilling (212)
Inclined Entry Drilling (212)
Inclined Exit Drilling (212)
Cutting Diameter
Cutting Diameter
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Cutting Diameter
Cutting Diameter
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Maximum Hole Depth [L4]
Maximum Hole Depth [L4]
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Maximum Hole Depth [L4]
Maximum Hole Depth [L4]
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Reach
Reach
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Reach
Reach
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Over All Length [L]
Over All Length [L]
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Over All Length [L]
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Application
Coating
Coating
- AlTiN (54)
- TiAlN (9)
- Uncoated (57)
Grade Of Cutting Tool
Grade Of Cutting Tool
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- KCMS15 (54)
- KCU15 (92)
- KN15 (57)
Back-End
Back-End Diameter
Back-End Diameter
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Back-End Diameter
Back-End Diameter
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