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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" .687 TK00517-0 TK00559-0 TK01037-0 -
17.5mm .689 TK00301-0 TK00380-0 - -
18mm .709 TK00302-0 TK00381-0 - -
18.5mm .728 TK00303-0 - - -
19mm .748 TK00304-0 TK00382-0 - -
3/4" .750 TK00518-0 TK00560-0 TK00981-0 -
19.5mm .767 TK00305-0 TK00383-0 - -
20mm .787 TK00306-0 TK00384-0 - -
20.5mm .807 TK00307-0 TK00385-0 - -
13/16" .812 TK00519-0 TK00561-0 TK00982-0 TK01054-0
21mm .827 TK00308-0 TK00386-0 - -
21.5mm .846 TK00309-0 TK00387-0 - -
22mm .866 TK00310-0 TK00388-0 - -
7/8" .875 TK00520-0 TK00562-0 TK00983-0 TK01055-0
22.5mm .885 TK00311-0 TK00289-0 - -
23mm .905 TK00312-0 TK00390-0 - -
23.5mm .925 TK00313-0 TK00391-0 - -
15/16" .937 TK00521-0 TK00563-0 TK00984-0 TK01056-0
24mm .945 TK00314-0 TK00392-0 - -
24.5mm .965 TK00315-0 TK00393-0 - -
25mm .984 TK00316-0 TK00394-0 - -
1" 1.000 TK00522-0 TK00564-0 TK00985-0 TK00958-0
26mm 1.023 TK00317-0 TK00395-0 - -
1-1/16" 1.062 TK00523-0 TK00567-0 TK00986-0 TK01058-0
27mm 1.063 TK00319-0 TK00397-0 - -
28mm 1.102 TK00320-0 TK00398-0 - -
1-1/8" 1.125 TK00554-0 TK00568-0 TK00987-0 TK01059-0
29mm 1.141 TK00321-0 TK00399-0 - -
30mm 1.181 TK00322-0 TK00400-0 - -
1-3/16" 1.187 TK00555-0 TK00565-0 TK00988-0 TK01060-0
31mm 1.220 TK00323-0 TK00401-0 - -
1-1/4" 1.250 TK00524-0 TK00569-0 TK00989-0 -
32mm 1.259 TK00324-0 TK00402-0 - -
33mm 1.299 TK00325-0 TK00403-0 - -
1-5/16" 1.312 TK00525-0 TK00570-0 TK00990-0 -
34mm 1.338 TK00325-0 TK00404-0 - -
1-3/8' 1.375 TK00526-0 TK00571-0 TK00991-0 -
35mm 1.378 TK00328-0 TK00405-0 - -
36mm 1.417 TK00602-0 TK00406-0 - -
1-7/16" 1.437 TK00641-0 TK00572-0 TK00992-0 -
37mm 1.456 TK00603-0 TK00407-0 - -
38mm 1.496 TK00604-0 TK00408-0 - -
1-1/2' 1.500 TK00642-0 TK00573-0 TK00993-0 -
39mm 1.535 TK00605-0 TK00409-0 - -
1-9/16" 1.562 TK00643-0 TK00574-0 TK00994-0 -
40mm 1.574 TK00606-0 TK00410-0 - -
41mm 1.614 - TK00411-0 - -
1-5/8" 1.625 - TK00575-0 TK00995-0 -
42mm 1.653 - TK00412-0 - -
1-11/16" 1.687 - TK00576-0 TK00996-0 -
43mm 1.692 - TK00413-0 - -
44mm 1.732 - TK00414-0 - -
1-3/4" 1.750 - TK00577-0 TK00997-0 -
45mm 1.771 - TK00415-0 - -
46mm 1.811 - TK00416-0 - -
1-13/16" 1.812 - TK00578-0 TK00998-0 -
47mm 1.850 - TK00417-0 - -
1-7/8" 1.875 - TK00579-0 TK00999-0 -
48mm 1.889 - TK00418-0 - -
49mm 1.929 - TK00419-0 - -
1-15/16" 1.937 - TK00580-0 TK01000-0 -
50mm 1.968 - TK00420-0 - -
2" 2.000 - TK00581-0 TK01001-0 -
51mm 2.007 - TK00442-0 - -
52mm 2.047 - TK00443-0 - -
2-1/16" 2.062 - TK00644-0 TK01002-0 -
53mm 2.086 - TK00444-0 - -
2-1/8" 2.125 - TK00645-0 - -
54mm 2.125 - TK00445-0 - -
55mm 2.165 - TK00446-0 - -
2-3/16" 2.187 - TK00646-0 - -
56mm 2.204 - TK00447-0 - -
57mm 2.244 - TK00448-0 - -
2-1/4" 2.250 - TK00647-0 - -
58mm 2.283 - TK00449-0 - -
2-5/16" 2.312 - TK00648-0 - -
59mm 2.322 - TK00450-0 - -
60mm 2.362 - TK00451-0 - -
2-3/8" 2.375 - TK00649-0 - -
2-7/16" 2.437 - TK00650-0 - -
2-1/2" 2.500 - TK00651-0 - -
2-9/16" 2.562 - TK00652-0 - -

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 #
UEA0835-0 UEA0850-0 UEA0875-0 UEA0800-0


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 1.968 TJ16650-0
51mm 2.007 TJ16651-0
52mm 2.047 TJ16652-0
53mm 2.086 TJ16653-0
54mm 2.126 TJ16654-0
55mm 2.165 TJ16655-0
56mm 2.204 TJ16656-0
57mm 2.244 TJ16657-0
58mm 2.283 TJ16658-0
59mm 2.322 TJ16659-0
60mm 2.362 TJ16660-0
61mm 2.401 TJ16661-0
62mm 2.440 TJ16662-0
63mm 2.480 TJ16663-0
64mm 2.519 TJ16664-0
65mm 2.559 TJ16665-0
66mm 2.598 TJ16666-0
67mm 2.637 TJ16667-0
68mm 2.677 TJ16668-0
69mm 2.716 TJ16669-0
70mm 2.755 TJ16670-0
71mm 2.795 TJ16671-0
72mm 2.834 TJ16672-0
73mm 2.874 TJ16673-0
74mm 2.913 TJ16674-0
75mm 2.952 TJ16675-0
Cutter Diameter Decimal Equivalent 3" D.O.C. Part #
76mm 2.992 TJ16676-0
77mm 3.031 TJ16677-0
78mm 3.070 TJ16678-0
79mm 3.110 TJ16679-0
80mm 3.149 TJ16680-0
81mm 3.189 TJ16681-0
82mm 3.228 TJ16682-0
83mm 3.267 TJ16683-0
84mm 3.307 TJ16684-0
85mm 3.346 TJ16685-0
86mm 3.385 TJ16686-0
87mm 3.425 TJ16687-0
88mm 3.464 TJ16688-0
89mm 3.503 TJ16689-0
90mm 3.543 TJ16690-0
91mm 3.582 TJ16691-0
92mm 3.622 TJ16692-0
93mm 3.661 TJ16693-0
94mm 3.700 TJ16694-0
95mm 3.740 TJ16695-0
96mm 3.779 TJ16696-0
97mm 3.818 TJ16697-0
98mm 3.858 TJ16698-0
99mm 3.897 TJ16699-0
100mm 3.937 TJ16700-0
4" 4.000 TK01134