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Cutters

JETBROACH Cutters

Tungsten Carbide Tipped Annular Cutters
For simplicity, one-touch cutter replacement needs no tools

Rationalized Hole-cutting

Genuine one-touch cutters
Nitto Kohki has developed the one-touch replacement system for Jetbroach carbide-tipped annular hole cutters. They are designed to be mounted and removed without the use of a tool. This reduces the time needed to replace cutters.

Jetbroach Cutters are far better than twist drills:
  • No dead point
  • Peripheral cutting
  • Dramatically reduce cutting resistance
  • Available size: 9/16” - 4” diameter

Jetbroach Cutter Features

  • Carbide tips for faster cutting
  • Single pass cutting, no pilot hole required
  • Annular part does all the work so small cutting resistance reduces drilling time
  • Cutting of slanted, elongated and edge holes is now possible
  • Fractional and metric cutter sizes to suit wide range of applications
  • Produces little slag and few chips for easy disposal
  • Can also be fitted to and used with previous Atra Ace models using a hexagon socket set-screw
  • Improved concentricity extends cutter life! One-touch system consisting of three balls inside the arbor body produces a self-centering effect during cutting to improve cutter performance and life

Self-centering effect mechanism to extended cutter life.

Feed & Speeds For Annular Cutters


A guide to the selection of circumferential cutting speeds:
feet/min m/min
Stainless Steel 65 - 131 20-40
Mild Steel 98 - 164 30-50
Cast Iron 98 - 164 30-50
Brass 164 - 229 50-70
Aluminum 229 - 295 70-90

Test Drilling is very often the only way to determine the machinability of difficult materials. Use a small size cutter wherever possible in order to minimize trial costs.

Recommended Feed: 0.001”-0.004”/rev. (0.02~0.1 mm/rev.)

Click here or on image to enlarge

Cutter Diameter Decimal Equivalent 1-3/8" Depth of Cut Part # 2" Depth of Cut Part # 3" Depth of Cut Part # 4" Depth of Cut Part #
9/16" .563 TK01160* TK01162** - -
5/8" .625 TK01161* TK01163** - -
  *Exception of TK01160 and TK01161 are 1” DOC uses UEA0625 Pilot Pin
**Exception of TK01162 and TK01163 uses UEA0650 Pilot Pin
11/16" .688 TK00517 TK00559 TK01037 -
17.5mm .689 TK01249 TK01282 TK01350  
18mm .709 TK01250 TK01283 TK01351  
18.5mm .728 TK01251 -    
19mm .748 TK01252 TK01284 TK01352  
3/4" .750 TK00518 TK00560 TK00981 -
19.5mm .768 TK01253 TK01285    
20mm .787 TK01254 TK01286 TK01353  
20.5mm .807 TK01255 TK01287    
13/16" .813 TK00519 TK00561 TK00982 TK01054
21mm .827 TK01256 TK01288 TK01354  
21.5mm .846 TK01257 TK01289    
22mm .866 TK01258 TK01290 TK01355  
7/8" .875 TK00520 TK00562 TK00983 TK01055
22.5mm .886 TK01259 TK01291    
23mm .906 TK01260 TK01292 TK01356  
23.5mm .925 TK01261 TK01293    
15/16" .938 TK00521 TK00563 TK00984 TK01056
24mm .945 TK01262 TK01294 TK01357  
24.5mm .965 TK01263 TK01295 TK01358  
25mm .984 TK01264 TK01296 TK01359  
1" 1.000 TK00522 TK00564 TK00985 TK00958
26mm 1.024 TK01266 TK01298 TK01360  
26.5mm 1.043 TK01267 TK01299 TK01361  
1-1/16" 1.063 TK00523 TK00567 TK00986 TK01058
27mm 1.063 TK01268 TK01300 TK01362  
28mm 1.102 TK01269 TK01301 TK01363  
1-1/8" 1.125 TK00554 TK00568 TK00987 TK01059
29mm 1.142 TK01270 TK01302 TK01364  
30mm 1.181 TK01271 TK01303 TK01365  
1-3/16" 1.188 TK00555 TK00565 TK00988 TK01060
31mm 1.220 TK01272 TK01304 TK01366  
1-1/4" 1.250 TK00524 TK00569 TK00989 TK01773
32mm 1.260 TK01273 TK01305 TK01367  
33mm 1.299 TK01274 TK01306 TK01368  
1-5/16" 1.313 TK00525 TK00570 TK00990 -
34mm 1.339 TK01275 TK01307 TK01369  
1-3/8' 1.375 TK00526 TK00571 TK00991 -
35mm 1.378 TK01276 TK01308 TK01370  
36mm 1.417 TK01277 TK01309 TK01371  
1-7/16" 1.438 TK00641 TK00572 TK00992 -
37mm 1.457 TK01278 TK01310 TK01372  
38mm 1.496 TK01279 TK01311 TK01373  
1-1/2' 1.500 TK00642 TK00573 TK00993 -
39mm 1.535 TK01280 TK01312 TK01374  
1-9/16" 1.563 TK00643 TK00574 TK00994 -
40mm 1.575 TK01281 TK01313 TK01375  
41mm 1.614 - TK01314 TK01376  
1-5/8" 1.625 - TK00575 TK00995 -
42mm 1.654 - TK01315 TK01377  
1-11/16" 1.688 - TK00576 TK00996 -
43mm 1.693 - TK01316 TK01378  
44mm 1.732 - TK01317 TK01379  
1-3/4" 1.750 - TK00577 TK00997 -
45mm 1.772 - TK01318 TK01380  
46mm 1.811 - TK01319 TK01381  
1-13/16" 1.813 - TK00578 TK00998 -
47mm 1.850 - TK01320 TK01382  
1-7/8" 1.875 - TK00579 TK00999 -
48mm 1.890 - TK01321 TK01383  
49mm 1.929 - TK01322 TK01384  
1-15/16" 1.938 - TK00580 TK01000 -
50mm 1.969 - TK01323 TK01385  
2" 2.000 - TK00581 TK01001 -
51mm 2.008 - TK01324 TK01386  
52mm 2.047 - TK01325 TK01387  
2-1/16" 2.063 - TK00644 TK01002 -
53mm 2.087 - TK01326 TK01388  
2-1/8" 2.125 - TK00645 TK01094 -
54mm 2.126 - TK01327 TK01389  
55mm 2.165 - TK01328 TK01390  
2-3/16" 2.188 - TK00646 TK01095 -
56mm 2.205 - TK01329    
57mm 2.244 - TK01330    
2-1/4" 2.250 - TK00647 - -
58mm 2.283 - TK01331    
2-5/16" 2.313 - TK00648 - -
59mm 2.323 - TK01332    
60mm 2.362 - TK01333    
2-3/8" 2.375 - TK00649 - -
61mm 2.402   TK01334    
2-7/16" 2.438 - TK00650 - -
62mm 2.441   TK01335    
63mm 2.480   TK01336    
2-1/2" 2.500 - TK00651 - -
64mm 2.520   TK01337    
65mm 2.559   TK01338    
2-9/16" 2.563 - TK00652 - -

Jetbroach cutters with "One-Touch" shanks can be used in drilling machines with 3/4" side-lock arbors.

Jetbroach Pilot Pins
1-3/8" Depth of Cut Part # 2" Depth of Cut Part # 3" Depth of Cut Part # 4" Depth of Cut Part #
UEA0835 UEA0850 UEA0875 UEA0800

Industrial Cutters with 1-1/4" Weldon Shanks*

*Industrial cutters with 1-1/4" weldon shanks use the special pilot pin #TA9A207-0

Cutter Diameter Decimal Equivalent 3" D.O.C. Part #
50mm 1.969 TK01433
51mm 2.008 TK01434
52mm 2.047 TK01435
53mm 2.087 TK01436
54mm 2.126 TK01437
55mm 2.165 TK01438
56mm 2.205 TK01439
57mm 2.244 TK01440
58mm 2.283 TK01441
59mm 2.323 TK01442
60mm 2.362 TK01443
61mm 2.402 TK01444
62mm 2.441 TK01445
63mm 2.480 TK01446
64mm 2.520 TK01447
65mm 2.559 TK01448
66mm 2.598 TK01449
67mm 2.638 TK01450
68mm 2.677 TK01451
69mm 2.717 TK01452
70mm 2.756 TK01453
71mm 2.795 TK01454
72mm 2.835 TK01455
73mm 2.874 TK01456
74mm 2.913 TK01457
75mm 2.953 TK01458
Cutter Diameter Decimal Equivalent 3" D.O.C. Part #
76mm 2.992 TK01459
77mm 3.031 TK01460
78mm 3.071 TK01461
79mm 3.110 TK01462
80mm 3.150 TK01463
81mm 3.189 TK01464
82mm 3.228 TK01465
83mm 3.268 TK01466
84mm 3.307 TK01467
85mm 3.346 TK01468
86mm 3.386 TK01469
87mm 3.425 TK01470
88mm 3.465 TK01471
89mm 3.504 TK01472
90mm 3.543 TK01473
91mm 3.583 TK01474
92mm 3.622 TK01475
93mm 3.661 TK01476
94mm 3.701 TK01477
95mm 3.740 TK01478
96mm 3.780 TK01479
97mm 3.819 TK01480
98mm 3.858 TK01481
99mm 3.898 TK01482
100mm 3.937 TK01483