Annular Cutters NITTO KOHKI | Kouei Japan Trading

Product Made in Japan
Manufacturer: Nitto Kohki
Model: Jetbroach & Hi-broach

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

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

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.

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

Nitto Kohki

Nitto Kohki Annular Cutters

Cutters

Rationalized Hole-cutting

Features

Feed & Speeds For Annular Cutters

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

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