Carbide Tip Koolcarbâ Extra Length Drill

 

172both.jpg (13893 bytes)

Style 172

 depth @ 12 to 28 x Ø
  • Pressure coolant Koolcarb® construction creates straighter holes and smoother finish.
  • 125° four facet web thinned point starts best into a larger point angle. Not intended for interrupted cut drilling.
  • Submicron carbide tip yields exceptional tool life in tool steels, cast and ductile irons, aluminum castings and other abrasive materials.
  • High speed "milled" body runs 2 to 4 times gundrill feeds on conventional equipment.
  • Longer carbide yields increased regrinds.
  • Straight flute, right hand cut.
  • Specials available to 1.535" (39.0 mm) Ø. Request intermediate sizes from grind down range.
 
Diameter Tolerance
Nominal Size Cutting Æ Shank Æ
Inch mm Inch mm
All +.0000 +0.000 +.0000 +0.000
-.0010 -0.025 -.0010 -0.025

Shk Æ = Cut Æ      

 

EDP
#		 Cutting Æ "D" Dec Equiv. Overall Length "A" Flute Length "B" Usable Flute at Full Regrind "F" Grind Down Range Ineffective Flute Length
Inch mm Inch Inch mm Inch mm Inch mm Inch mm Inch mm
17202500 1/4 6.35 .2500 10 254 8 203 7.2 183 .2400-.2530 6.096-6.426 .48 12
17202812 9/32 7.142 .2812 10 254 8 203 7.1 181 .2656-.2840 6.746-7.214 .51 13
17203125 5/16 7.938 .3125 10 254 8 203 7.1 180 .2953-.3160 7.5-8.026 .53 13
17203438 11/32 8.733 .3438 10 254 8 203 7.1 180 .3281-.3460 8.334-8.788 .55 14
17203750 3/8 9.525 .3750 11 279 9 229 8.1 205 .3594-.3770 9.129-9.576 .56 14
17204062 13/32 10.317 .4062 11 279 9 229 8 204 .3906-.4080 9.921-10.363 .61 15
17204375 7/16 11.113 .4375 11 279 9 229 7.9 202 .4200-.4390 10.668-11.151 .61 16
17204688 15/32 11.908 .4688 12 305 9-3/4 248 8.6 219 .4531-.4710 11.509-11.963 .63 16
17205000 1/2 12.7 .5000 12 305 9-3/4 248 8.6 218 .4800-.5030 12.192-12.776 .65 17
17205312 17/32 13.492 .5312 12 305 9-3/4 248 8.5 216 .5118-.5330 13.-13.538 .69 18
17205625 9/16 14.288 .5625 13 330 10-3/4 273 9.5 240 .5430-.5650 13.564-14.351 .68 17
17206250 5/8 15.875 .6250 13 330 10-3/4 273 9.4 239 .6070-.6270 15.418-15.926 .72 17
17207500 3/4 19.05 .7500 14 356 11-3/4 298 10.2 260 .7320-.7530 18.593-19.126 .83 18
17208750 7/8 22.225 .8750 15 381 12-3/4 324 11.1 281 .8750-.8780 21.768-22.3 .92 19
17210000 1 25.4 1.0000 16 406 13-3/4 349 12 304 .9820-1.0030 24.943-25.476 1.05 20

 

 
INDEX

Last Updated on 03/21/02
By Bob Novak Media Development
Copyright Ó1999 CJT KOOLCARB Inc.