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UNIBOR high speed steel broaching cutters are available in two types of cutting depth, S type for 30mm cutting thickness material and L type for 50 mm cutting thickness material – in diameter of 12mm to 100mm in 1mm increments. Specially designed for use with UNIBOR range of electro magnetic drilling machines, the cutters also deliver extra capacity and performance in other machine tools.

The success of UNIBOR broaching cutters is proven in their ability to cut more accurate holes using less energy and giving longer tool life. Because these broaching cutters only remove metal at the periphery of the hole being cut, on average only 25% of the material in the hole is converted into ‘chips’, requiring much less power than conventional twist drills. The additional benefit provided by the multiple cutting edges of UNIBOR High Speed Steel broaching cutters include the faster feed rates that can be achieved because each cutting edge does less work, also giving the benefit of longer tool life, and unlike a twist drill, there is no ‘dead’ center of the cutting action, giving more holes between sharpening.

Because the cutting edges are only at the periphery of H.S.S. broaching cutters, they operate in a much narrower range of surface speeds than those of twist drills, so permitting drilling close to the optimum surface FPM/MPM for the material being worked. The opportunity increase the capacity of your existing machines is another benefit of H.S.S. broaching cutters – you get more work from the same horsepower! The unique geometry of UNIBOR H.S.S. broaching cutters also helps to achieve faster feed, lower cutting resistance, greater accuracy and better finish.

UNIBOR offers H.S.S. Broaching Cutters in:

  • M2 High Speed Steel Cutters for mild steel material
  • M42 Cobalt Steel Cutters for high-tension steel material

 

M35 Cobalt Annular Cutters

Unibor Cobalt Cutters

Our cobalt cutters have an additional 5% cobalt added for much greater wear resistance, and will give longer cutting life in mild steel and better performance in more exotic materials. Available in 1”, 2” and 3” lengths in imperial and metric sizes. Stock sizes from 7/16” up to 3” and in metric from 12mm to 50mm. Standard sizes come with 3/4” shank.

7/16” 0.438 25114* 25214* N/A N/A
1/2” 0.500 25116 25216 N/A N/A
9/16” 0.563 25118 25218 N/A N/A
5/8” 0.625 25120 25220 N/A N/A
11/16” 0.688 25122 25222 N/A N/A
3/4” 0.750 25124 25224 25324 25424
13/16” 0.813 25126 25226 25326 25426
7/8” 0.875 25128 25228 25328 25428
15/16” 0.938 25130 25230 25330 25430
1” 1.000 25132 25232 25332 25432
1-1/16” 1.063 25134 25234 25334 25434
1-1/8” 1.125 25136 25236 25336 25436
1-3/16” 1.188 25138 25238 25338 25438
1-1/4” 1.250 25140 25240 25340 25440
1-5/16” 1.313 25142 25242 25342
1-3/8” 1.375 25144 25244 25344
1-7/16” 1.438 25146 25246 25346
1-1/2” 1.500 25148 25248 25348
1-9/16” 1.563 25150 25250 25350
1-5/8” 1.625 25152 25252 25352
1-11/16” 1.688 25154 25254 25354
1-3/4” 1.750 25156 25256 25356
1-13/16” 1.813 25158 25258 25358
1-7/8” 1.875 25160 25260 25360
1-15/16” 1.938 25162 25262 25362
2” 2.000 25164 25264 25364
2-1/16” 2.063 25166 25266 25366
2-1/8” 2.125 25168 25268 25368
2-3/16” 2.188 25170 25270 25370
2-1/4” 2.250 25172 25272 25372
2-5/16” 2.313 25174 25274 25374
2-3/8” 2.375 25176 25276 25376
2-7/16” 2.438 25178 25278 25378
2-1/2” 2.500 25180 25280 25380
2-9/16” 2.563 25182 25282 25382
2-5/8” 2.625 25184 25284 25384
2-11/16” 2.688 25186 25286 25386
2-3/4” 2.750 25188 25288 25388
2-13/16” 2.813 25190 25290 25390
2-7/8” 2.875 25192 25292 25392
2-15/16” 2.938 25194 25294 25394
3” 3.000 25196 25296 25396
Pilot Pins USP-1 USP-2 USP-3 USP-4
*USP-1A *USP-2A

 

Anatomy of a Unibor Cutter

 

 

 

 

 

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