High Performance Drill Selection Chart

Transcription

1

2 igh erformance Drill election Chart eries Drill Lgth ize Range Inch ize Range mm argin D1 ol. D2 ol. elix oint Coolant Angle Fed CXD 3X #31-3/ Double m7 h N 6537 CXDR 5X #31-5/ Double m7 h N 6537L CXDC 3X #31-5/ Double m7 h Y 6537 CXDCR 5X #31-3/ Double m7 h Y 6537L CXDCL 8X #31-1/ Double m7 h Y DIN Coating ALtima lus ALtima lus ALtima lus ALtima lus ALtima lus A* izes teel Application Recommendations ardened teel tainless teel igh Cast tainless Iron itanium emp teel Alloys X 1st 2nd 2nd 2nd 1st 2nd 2nd X 1st 2nd 2nd 2nd 1st 2nd 2nd X 1st 2nd 1st 2nd 1st 1st 2nd X 1st 2nd 1st 2nd 1st 1st 2nd X 1st 2nd 1st 2nd 1st 1st 2nd 2XD 3X #31-3/ ingle h7 h N ALtima X 2nd 1st 1st 1st 2nd 1st 1st 2XDR 5X 1/64-5/ ingle h7 h N ALtima X 2nd 1st 1st 1st 2nd 1st 1st 2XDC 3X #31-5/ ingle h7 h Y 6537 ALtima X 2nd 1st 1st 1st 2nd 2nd 1st 2XDCR 5X #31-3/ ingle h7 h Y ALtima X 2nd 1st 1st 1st 2nd 2nd 1st 2XDCL 7X+ #31-1/ ingle h7 h Y ALtima X 2nd 1st 1st 1st 2nd 2nd 1st 2XDC 12X- 25X** XD Our industry leading high performance drill with the same high quality that helped set the standard. 1/4-1/ Double h7 h Y ALtima 2nd 1st 1st 1st 2nd 2nd 1st DR 5X #31-5/ ingle h7 h N 6537L DCR 5X #31-5/ ingle h7 h Y 6537L CXD ultipurpose high quality drill for most drilling applications adding stability, hole quality, tool life, and finish (excludes some work hardening materials). AliN AliN D An economical choice perfect for job shop and batch production work requiring a high performance drill option. 3rd 3rd 3rd 3rd 3rd 3rd 3rd 3rd 3rd 3rd 3rd 3rd 3rd 3rd 405 / Drill election Chart wister G / echnical ection echnical Information Note: For drilling applications involving cross holes and/or optimal hole finishes, use the CXD style drill. *A - ubular xchange anufacturer s Association **Length varies depending on size. Inch D1 olerance (m7) / / / / / Inch D1 olerance (h7) / / / / / Inch D2 olerance (h6) / / / / / etric (mm) D1 olerance (m7) / / / / /+.029 etric (mm) D1 olerance (h7) / / / / /-.021 etric (mm) D2 olerance (h6) / / / / /-.013.A. Ford Coating icrohardness (V) aximum ervice emp. Friction Coefficient ALtima C / 2012 F 0.42 ALtima lus C / 2012 F 0.25 AliN C / 1700 F 0.25 echnical data provided should be considered advisory only as variations may be necessary depending on the particular application. For product information, call your local distributor. 135

3 wister Drill Icon Glossary olid aterial Group Cutting Calculations and Definitions etric U.. ae = Width of cut, radial depth of cut (mm) (inch) ap = Depth of cut, axial depth of cut (mm) (inch) Coolant Fed Drill Length teels Dc = Cutter diameter (mm) (inch) f = Feed per revolution (mm/rev) (IR) fz = Feed per tooth (mm/tooth) (I) zn = Number of teeth Number n = R (rev/min) (rev/min) Drill oint Angle tainless teels Q = etal removal rate (cm 3 /min) (in 3 /min) vc = Cutting speed (m/min) (F) vf = Feed speed (mm/min) (I) Cast Iron Dw = Working diameter (mm) (inch) elix Angle Coatings DIN pecs Drill roubleshooting N pecial Alloys ardened teels (35-65) Non-Ferrous Formulas Inch R (n) = F (vc) x 3.82/ool Diam. I (vf) = R (n) x IR (f) Conversion Inch to etric F (vc) to m/min (vc) = F (vc) x.3048 I (vf) to mm/min (vf) = I (vf) x 25.4 etric R (n) = m/min (vc) x /ool Diam. mm/min (vf) = R (n) x mm/revolution (f). Conversion etric to Inch m/min (vc) to F (vc) = (m/min)/.3048 mm/min (vf) to I (vf) = (mm/min)/25.4 afety Note Always wear the appropriate personal protective equipment such as safety glasses and protective clothing when using solid carbide or cutting tools. achines should be fully guarded. roblem ool Deterioration Chip Formation ool Life rocess peed & Feed Flank wear argin wear Breakage Flaking Creater wear Chisel edge wear Corner chipping Flute chipping Cutting edge chipping Cutting edge wear oint center chipping Rake face coring on tool body Long stringy Varied chip form Blue/brown chips ossible olutions Reduce feed or reduce at exit x x x x x x x x x x x x x x x x Reduce feed at entrance x x x x x x Consistent feed rate x x x x x Increase feed x x x x x x Reduce speed x x x x x x x x x x ool Life Undersized hole Oversized hole oor alignment oor surface finish eavy burr breakout Retract marks ole location ole straightness Deflection oint Deflection Galling Vibration Abnormal noise Chip packing No drill penetration Increase speed x Coolant Coolant mix x x x x x x x x x x Coolant increase flow x x x x x x x x x x x Coolant filter x x x x x x x x x clamp rigid x x x x x x x x x x x x x x x Collet accuracy x x x x x x ool holder fit.0008 x x x x x x etup Alignment x x x x eck drill x Concentricity x x x x x x x x x x x x x Do not extract tool during peck x echnical data provided should be considered advisory only as variations may be necessary depending on the particular application. 136.A. Ford hone: or sales@maford.com

4 Coolant ressure - Inch Cyclone / wister Drills echnical ection Coolant pressure low lease reduce cutting speed Coolant ressure - etric echnical Information Coolant pressure low lease reduce cutting speed echnical data provided should be considered advisory only as variations may be necessary depending on the particular application. For product information, call your local distributor. 137

5 Recommended Cutting Data XD 1/4 - Inch aterial Group Free achining & Low Carbon teels 1006, 1008, 1015, 1018, 1020, 1022, 1025, 1117, 1140, 1141, 11L08, 11L14, 1213, 12L13, 12L14, 1215, 1330 I O ardness 28 ool eries Y D Drill Diameter Drill Diameter 1/64 1/16 1/8 5/32 3/16 1/4 1/64 1/16 1/8 5/32 3/16 1/4 vc - F 2XD XDR XDC XDCR XDCL f - IR 5-5- edium Carbon & igh Carbon teels, Alloy teels & asy to achine ool teels 1030, 1035, 1040, 1045, 1050, 1052, 1055, 1060, 1085, 1095, 1541, 1551, 9255, 2515, 3135, 3415, 4130, 4137, 4140, 4150, 4320, 4340, 4520, 5015, 5115, 5120, 5132, 5140, 5155, 6150, 8620, 9262, 9840, 52100, O1, O2, O6, 2, W1 to W to 38 2XD XDR XDC XDCR XDCL ool teels & Die teels O7, 1, 2, 3, 4, 7, 1, 2, 4, 5, 8, 15, A2, A3, A6, A7, 10, 11, 12, 13, 19, 21, L3, L6, L7, 2, 20, 1, 5, 7, 52100, A128, D2, D3, D4, D5, D7 28 to 44 2XD XDR XDC XDCR XDCL tainless teel - asy to achine 430F, 301, 303, 410, 416 Annealed, 420F, 430 2XD XDR XDC XDCR XDCL tainless teel - oderately Difficult 301, 302, 303 igh ensile, 304, 304L, 305, 420, 15-5, 17-4, XD XDR XDC XDCR XDCL tainless teel - Difficult to achine 302B, 304B, 309, 310, 316, 316B, 316L, 316i, 317, 317L, 321, 13-8o, Nitronics 2XD XDR XDC XDCR XDCL igh emp Alloys Nimonics, Inconel, onel, astelloy 42 2XD XDR XDC XDCR XDCL itanium Alloys 6Al-4V, 5Al-2.5 n, 6Al-2 n-4zr-6o, 3Al-8V-6Cr4o-4Zr, 10V-2Fe-3Al, 13V-11Cr-3Al 42 2XD XDR XDC XDCR XDCL Cast Iron - Gray CG, A A48, CLA 20, 25, 30, 35, A J431C, GRAD G1800, G3000, G3500, GG 10, 15, 20, 25, 30, 35, 40 2XD XDR XDC XDCR XDCL Cast Iron Ductile & alleable CGI , , D4018, D4512, D5506, 32510, 35108, 3210, 4504, 5503, 250, 300, 350, 400, 450 2XD XDR XDC XDCR XDCL echnical data provided should be considered advisory only as variations may be necessary depending on the particular application. 144.A. Ford hone: or sales@maford.com

6 Recommended Cutting Data XD 5/16 - Inch aterial Group I O ardness ool eries Y D Drill Diameter Drill Diameter 5/16 3/8 1/2 9/16 5/8 3/4 5/16 3/8 1/2 9/16 5/8 3/4 vc - F f - IR Free achining & Low Carbon teels 1006, 1008, 1015, 1018, 1020, 1022, 1025, 1117, 1140, 1141, 11L08, 11L14, 1213, 12L13, 12L14, 1215, 1330 edium Carbon & igh Carbon teels, Alloy teels & asy to achine ool teels 1030, 1035, 1040, 1045, 1050, 1052, 1055, 1060, 1085, 1095, 1541, 1551, 9255, 2515, 3135, 3415, 4130, 4137, 4140, 4150, 4320, 4340, 4520, 5015, 5115, 5120, 5132, 5140, 5155, 6150, 8620, 9262, 9840, 52100, O1, O2, O6, 2, W1 to W to 38 2XD XDR XDC XDCR XDCL XD XDR XDC XDCR XDCL XD wister XD ool teels & Die teels O7, 1, 2, 3, 4, 7, 1, 2, 4, 5, 8, 15, A2, A3, A6, A7, 10, 11, 12, 13, 19, 21, L3, L6, L7, 2, 20, 1, 5, 7, 52100, A128, D2, D3, D4, D5, D7 tainless teel - asy to achine 430F, 301, 303, 410, 416 Annealed, 420F, 430 tainless teel - oderately Difficult 301, 302, 303 igh ensile, 304, 304L, 305, 420, 15-5, 17-4, to 44 2XD XDR XDC XDCR XDCL XD XDR XDC XDCR XDCL XD XDR XDC XDCR echnical Information 2XDCL tainless teel - Difficult to achine 302B, 304B, 309, 310, 316, 316B, 316L, 316i, 317, 317L, 321, 13-8o, Nitronics 2XD XDR XDC XDCR XDCL XD XDR igh emp Alloys Nimonics, Inconel, onel, astelloy 42 2XDC XDCR XDCL itanium Alloys 6Al-4V, 5Al-2.5 n, 6Al-2 n-4zr-6o, 3Al-8V-6Cr4o-4Zr, 10V-2Fe-3Al, 13V-11Cr-3Al 42 2XD XDR XDC XDCR XDCL Cast Iron - Gray CG, A A48, CLA 20, 25, 30, 35, A J431C, GRAD G1800, G3000, G3500, GG 10, 15, 20, 25, 30, 35, 40 2XD XDR XDC XDCR XDCL Cast Iron - Ductile & alleable CGI , , D4018, D4512, D5506, 32510, 35108, 3210, 4504, 5503, 250, 300, 350, 400, 450 2XD XDR XDC XDCR XDCL echnical data provided should be considered advisory only as variations may be necessary depending on the particular application. For product information, call your local distributor. 145

7 Recommended Cutting Data XD 6mm - etric aterial Group Free achining & Low Carbon teels 1006, 1008, 1015, 1018, 1020, 1022, 1025, 1117, 1140, 1141, 11L08, 11L14, 1213, 12L13, 12L14, 1215, 1330 I O ardness 28 ool eries Y D Drill Diameter (mm) Drill Diameter (mm) XD XDR XDC XDCR XDCL vc - m/min f - mm/rev edium Carbon & igh Carbon teels, Alloy teels & asy to achine ool teels 1030, 1035, 1040, 1045, 1050, 1052, 1055, 1060, 1085, 1095, 1541, 1551, 9255, 2515, 3135, 3415, 4130, 4137, 4140, 4150, 4320, 4340, 4520, 5015, 5115, 5120, 5132, 5140, 5155, 6150, 8620, 9262, 9840, 52100, O1, O2, O6, 2, W1 to W to 38 2XD XDR XDC XDCR XDCL ool teels & Die teels O7, 1, 2, 3, 4, 7, 1, 2, 4, 5, 8, 15, A2, A3, A6, A7, 10, 11, 12, 13, 19, 21, L3, L6, L7, 2, 20, 1, 5, 7, 52100, A128, D2, D3, D4, D5, D7 28 to 44 2XD XDR XDC XDCR XDCL tainless teel - asy to achine 430F, 301, 303, 410, 416 Annealed, 420F, 430 2XD XDR XDC XDCR XDCL tainless teel - oderately Difficult 301, 302, 303 igh ensile, 304, 304L, 305, 420, 15-5, 17-4, XD XDR XDC XDCR XDCL tainless teel - Difficult to achine 302B, 304B, 309, 310, 316, 316B, 316L, 316i, 317, 317L, 321, 13-8o, Nitronics 2XD XDR XDC XDCR XDCL igh emp Alloys Nimonics, Inconel, onel, astelloy 42 2XD XDR XDC XDCR XDCL itanium Alloys 6Al-4V, 5Al-2.5 n, 6Al-2 n-4zr-6o, 3Al-8V-6Cr4o-4Zr, 10V-2Fe-3Al, 13V-11Cr-3Al 42 2XD XDR XDC XDCR XDCL Cast Iron - Gray CG, A A48, CLA 20, 25, 30, 35, A J431C, GRAD G1800, G3000, G3500, GG 10, 15, 20, 25, 30, 35, 40 2XD XDR XDC XDCR XDCL Cast Iron - Ductile & alleable CGI , , D4018, D4512, D5506, 32510, 35108, 3210, 4504, 5503, 250, 300, 350, 400, 450 2XD XDR XDC XDCR XDCL echnical data provided should be considered advisory only as variations may be necessary depending on the particular application. 146.A. Ford hone: or sales@maford.com

8 Recommended Cutting Data XD 8mm - etric aterial Group I O ardness ool eries Y D Drill Diameter (mm) Drill Diameter (mm) vc - m/min f - mm/rev Free achining & Low Carbon teels 1006, 1008, 1015, 1018, 1020, 1022, 1025, 1117, 1140, 1141, 11L08, 11L14, 1213, 12L13, 12L14, 1215, 1330 edium Carbon & igh Carbon teels, Alloy teels & asy to achine ool teels 1030, 1035, 1040, 1045, 1050, 1052, 1055, 1060, 1085, 1095, 1541, 1551, 9255, 2515, 3135, 3415, 4130, 4137, 4140, 4150, 4320, 4340, 4520, 5015, 5115, 5120, 5132, 5140, 5155, 6150, 8620, 9262, 9840, 52100, O1, O2, O6, 2, W1 to W to 38 2XD XDR XDC XDCR XDCL XD XDR XDC XDCR XDCL XD wister XD ool teels & Die teels O7, 1, 2, 3, 4, 7, 1, 2, 4, 5, 8, 15, A2, A3, A6, A7, 10, 11, 12, 13, 19, 21, L3, L6, L7, 2, 20, 1, 5, 7, 52100, A128, D2, D3, D4, D5, D7 tainless teel - asy to achine 430F, 301, 303, 410, 416 Annealed, 420F, 430 tainless teel - oderately Difficult 301, 302, 303 igh ensile, 304, 304L, 305, 420, 15-5, 17-4, to 44 2XD XDR XDC XDCR XDCL XD XDR XDC XDCR XDCL XD XDR XDC XDCR echnical Information 2XDCL tainless teel - Difficult to achine 302B, 304B, 309, 310, 316, 316B, 316L, 316i, 317, 317L, 321, 13-8o, Nitronics 2XD XDR XDC XDCR XDCL XD XDR igh emp Alloys Nimonics, Inconel, onel, astelloy 42 2XDC XDCR XDCL itanium Alloys 6Al-4V, 5Al-2.5 n, 6Al-2 n-4zr-6o, 3Al-8V-6Cr4o-4Zr, 10V-2Fe-3Al, 13V-11Cr-3Al 42 2XD XDR XDC XDCR XDCL Cast Iron - Gray CG, A A48, CLA 20, 25, 30, 35, A J431C, GRAD G1800, G3000, G3500, GG 10, 15, 20, 25, 30, 35, 40 2XD XDR XDC XDCR XDCL Cast Iron - Ductile & alleable CGI , , D4018, D4512, D5506, 32510, 35108, 3210, 4504, 5503, 250, 300, 350, 400, 450 2XD XDR XDC XDCR XDCL echnical data provided should be considered advisory only as variations may be necessary depending on the particular application. For product information, call your local distributor. 147

9 eries 2XDC echnical Information rocess For uccessful Deep ole Drilling: 1. tart by producing a 1.5 x diameter to 3 x diameter pilot hole using a coolant or non-coolant pilot drill. ypically this tool will have a point angle the same as or greater than the deep hole drill. Run this drill at 100% of the final drill speed and 1/2 the normal I (mm/min). 2. Retract and tool change to the final deep hole (2XDC.A. Ford eries) drill. 3. Rapid to clearance plane and enter the pilot hole at 25% (don t exceed 400 to 500 R (n)) of the final speed and 1 to 2 I (25.4 to 50.8 mm/min). his will help with true position by eliminating drill whip. Once into the hole, turn on the coolant and advance to the material start. At this point, you can add a dwell to clear any chips that have been left from the previous drill and let the spindle get to full speed. Increase the speed and feed to final drilling parameters. 4. Drill one shot to the final hole depth or through. 5. hould you experience any squeaking you may need to retract the drill and increase your feed. Chip packing is occurring and will need to be addressed. 6. Once through the material, it may be necessary to reduce the R (n) to eliminate breakage of the drill due to drill whip. hen retract to the clearance plane. achine Requirements igh ressure ump ystem (1,000 psi/68.9 bar) achine runout of.0003" (.008mm) ax. Due to the conditions of equipment, tool holders, and conditions beyond.a. Ford s control, your results may vary. hould your application require more in depth discussion or a special tool, please contact.a. Ford s Application ngineering Department at / echnical data provided should be considered advisory only as variations may be necessary depending on the particular application. 148.A. Ford hone: or sales@maford.com

10 Recommended Cutting Data XD 2XDC - Inch aterial Group Free achining & Low Carbon teels 1006, 1008, 1015, 1018, 1020, 1022, 1025, 1117, 1140, 1141, 11L08, 11L14, 1213, 12L13, 12L14, 1215, 1330 edium Carbon & igh Carbon teels, Alloy teels & asy to achine ool teels 1030, 1035, 1040, 1045, 1050, 1052, 1055, 1060, 1085, 1095, 1541, 1551, 9255, 2515, 3135, 3415, 4130, 4137, 4140, 4150, 4320, 4340, 4520, 5015, 5115, 5120, 5132, 5140, 5155, 6150, 8620, 9262, 9840, 52100, O1, O2, O6, 2, W1 to W310 ool teels & Die teels O7, 1, 2, 3, 4, 7, 1, 2, 4, 5, 8, 15, A2, A3, A6, A7, 10, 11, 12, 13, 19, 21, L3, L6, L7, 2, 20, 1, 5, 7, 52100, A128, D2, D3, D4, D5, D7 I O ardness to to 35 Y D vc - F ardened teels X ardened teels tainless teel - asy to achine 430F, 301, 303, 410, 416 Annealed, 420F, 430 tainless teel - oderately Difficult 301, 302, 303 igh ensile, 304, 304L, 305, 420, 15-5, 17-4, 17-7 tainless teel - Difficult to achine 302B, 304B, 309, 310, 316, 316B, 316L, 316i, 317, 317L, 321, 13-8o, Nitronics igh emp Alloys Nimonics, Inconel, onel, astelloy itanium Alloys 6Al-4V, 5Al-2.5 n, 6Al-2 n-4zr-6o, 3Al-8V-6Cr4o-4Zr, 10V-2Fe-3Al, 13V-11Cr-3Al Cast Iron - Gray CG, A A48, CLA 20, 25, 30, 35, A J431C, GRAD G1800, G3000, G3500, GG 10, 15, 20, 25, 30, 35, 40 Cast Iron - Ductile & alleable CGI , , D4018, D4512, D5506, 32510, 35108, 3210, 4504, 5503, 250, 300, 350, 400, Drill Diameter 3/16 1/4 5/16 3/8 1/2 f - IR 12-25X X X X X X X X X X Non-Ferrous - Al < 14% i N 12-25X Non-Ferrous - Al > 14% i N 12-25X Non-Ferrous - Brass N 12-25X Non-Ferrous - Cu/Cu Alloys/agnesium N 12-25X XDC wister XD echnical Information ade in UA IO 9001:2008 Certified echnical data provided should be considered advisory only as variations may be necessary depending on the particular application. For product information, call your local distributor. 149

11 Recommended Cutting Data XD 2XDC - etric aterial Group Free achining & Low Carbon teels 1006, 1008, 1015, 1018, 1020, 1022, 1025, 1117, 1140,1141, 11L08, 11L14, 1213, 12L13, 12L14, 1215, 1330 edium Carbon & igh Carbon teels, Alloy teels & asy to achine ool teels 1030, 1035, 1040, 1045, 1050, 1052, 1055, 1060, 1085, 1095, 1541, 1551, 9255, 2515, 3135, 3415, 4130, 4137, 4140, 4150, 4320, 4340, 4520, 5015, 5115, 5120, 5132, 5140, 5155, 6150, 8620, 9262, 9840, 52100, O1, O2, O6, 2, W1 to W310 ool teels & Die teels O7, 1, 2, 3, 4, 7, 1, 2, 4, 5, 8, 15, A2, A3, A6, A7, 10, 11, 12, 13, 19, 21, L3, L6, L7, 2, 20, 1, 5, 7, 52100, A128, D2, D3, D4, D5, D7 I O ardness to to 35 Y D vc - m/min ardened teels X ardened teels Drill Diameter (mm) f - mm/rev 12-25X X X tainless teel - asy to achine 430F, 301, 303, 410, 416 Annealed, 420F, X tainless teel - oderately Difficult 301, 302, 303 igh ensile, 304, 304L, 305, 420, 15-5, 17-4, X tainless teel - Difficult to achine 302B, 304B, 309, 310, 316, 316B, 316L, 316i, 317, 317L, 321, 13-8o, Nitronics 12-25X igh emp Alloys Nimonics, Inconel, onel, astelloy itanium Alloys 6Al-4V, 5Al-2.5 n, 6Al-2 n-4zr-6o, 3Al-8V-6Cr4o-4Zr, 10V-2Fe-3Al, 13V-11Cr-3Al Cast Iron - Gray CG, A A48, CLA 20, 25, 30, 35, A J431C, GRAD G1800, G3000, G3500, GG 10, 15, 20, 25, 30, 35, 40 Cast Iron - Ductile & alleable CGI , , D4018, D4512, D5506, 32510, 35108, 3210, 4504, 5503, 250, 300, 350, 400, 450 Non-Ferrous - Al < 14% i N X X X X Non-Ferrous - Al > 14% i N X Non-Ferrous - Brass N Non- Ferrous - Cu/Cu Alloys/agnesium N afety Note Always wear the appropriate personal protective equipment such as safety glasses and protective clothing when using solid carbide or cutting tools. achines should be fully guarded. echnical data provided should be considered advisory only as variations may be necesary depending on the particular application. echnical data provided should be considered advisory only as variations may be necessary depending on the particular application. 150.A. Ford hone: or sales@maford.com

12 Drill erminology Chisel dge he non-cutting tip of the drill. ushes, rather than cuts material. aving a smaller chisel means that a tool will cut more aggressively. A larger chisel means that a tool will be stronger. Web he core of the drill that is left from the fluting operation. A thicker web means added rigidity, while a smaller web means more chip evacuation. On two flute drills, typically varies from 16% - 30% of the tool diameter. elix Angle - Varies from 0 to 35 helix on standard tools. Lower helix angle means more rigidity and strength and a higher helix angle means more aggressive drilling and better chip evacuation. argin Width rovides a surface to support the drill inside the hole during the drilling operation..a. Ford offers both single margin and double margin geometries. argin widths are a balancing act between friction build-up vs. tool support in the drilling operation. rimary rimary Cutting Lip - he cutting edges of a two flute drill extending from the chisel edge to the periphery. Land Width he amount of material left on the drill per side, from the fluting operation. Larger land widths mean more rigidity, while smaller land widths allow for better chip evacuation. aving a problem with drill geometries? Circle the area where the problem exists. Include a detailed explanation of the issue and fax to Attn: echnical Application upport / or maftech@maford.com echnical data provided should be considered advisory only as variations may be necessary depending on the particular application. 170.A. Ford hone: or sales@maford.com

13 WC002016