3-jaw extra large through-hole power chuck (adapter excluded)
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Online inquiryMore large bore: the large bore in wedge type power operated chucks.
20% large bore: approximately 20% higher speed, higher gripping force and larger bore compared with regular chucks.
Adapter for A2 spindle(DIN 55026)
Easy to mount.
Can be equipped with automatic feeder to increase productivity.
Can be equipped with back gauge.
Replaceable for Japanese brands.
The draw nut is customizable.(consult with sales)
Standard product 6~10" made of high strength alloy steel SCM440 from Japan
Sliding surfaces, master jaws, and interior parts are hardening and grinding.
Unit : mm
| Model/size |
Through hole Dia. (mm) |
Piston Stroke (mm) |
Jaw stroke Dia. (mm) |
Max pull force (kn) |
Max Gripping Force (kn) |
Max operating hydraulic pressure (kgf/cm2) |
Max RPM (r.p.m.) |
|---|---|---|---|---|---|---|---|
| NB-306A5 | ?52 | 12 | 5.4 | 2243 | 5812 | 18.4 | 6000 |
| NB-208A6 | ?66 | 16 | 7.4 | 3558 | 9075 | 20.5 | 5000 |
| NB-210A8 | ?78 | 19 | 8.8 | 4385 | 11319 | 27.5 | 4200 |
| NB-310A8 | ?81 | 19 | 8.8 | 4976 | 12848 | 31.5 | 4500 |
| NB-212A8 | ?122 | 23 | 10.6 | 5812 | 14990 | 20.5 | 3200 |
| NB-212A11 | ?122 | 23 | 10.6 | 5812 | 14990 | 20.5 | 3200 |
| NB-215A15 | ?142 | 23 | 10.6 | 7240 | 18355 | 25.5 | 2500 |
| NB-218A15 | ?166.5 | 23 | 10.6 | 7240 | 18355 | 25.5 | 2000 |
| Model/size |
Weight (kg) |
Inertia I(kg?m2) |
Matched cylinder | Matched HJ | Matched SJ |
Gripping Range O.D. (mm) |
|---|---|---|---|---|---|---|
| NB-306A5 | 14 | 0.06 | M1552 | HJ06 | HC06 | ?20-?170 |
| NB-208A6 | 24 | 0.14 | M1868 | HJ08 | HC08 | ?26-?210 |
| NB-210A8 | 37.4 | 0.4 | M1878 | HJ10 | HC10 | ?36-?254 |
| NB-310A8 | 36.4 | 0.33 | MK1881 | HJ10 | HC10 | ?37-?254 |
| NB-212A8 | 72.2 | 1.04 | M2511 | HJ12 | HC12 | ?59-?315 |
| NB-212A11 | 65 | 0.95 | M2511 | HJ12 | HC12 | ?59-?315 |
| NB-215A15 | 130 | 3 | M2816 | HJ15 | HC15 | ?59-?405 |
| NB-218A15 | 161 | 4.77 | M2816 | HJ15 | HC15 | ?78-?457 |
| Model/size | A | B | C(H6) | D | E | F | G | H | J | K | L | M | Nmax. | Omax. | Omin. |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| NB-306A5 | 170 | 91 | 140 | 20 | 15 | 82.563 | 116 | 104.78 | 14.5 | 6xM10 | 52 | 5 | 37 | 18.25 | 9.25 |
| NB-208A6 | 210 | 103 | 170 | 25 | 17 | 106.38 | 150 | 133.35 | 19.5 | 6xM12 | 66 | 5 | 45.7 | 23.75 | 11.75 |
| NB-210A8 | 254 | 113 | 220 | 30 | 18 | 139.72 | 190 | 171.45 | 24 | 6xM16 | 78 | 5 | 53 | 33.75 | 14.25 |
| NB-310A8 | 254 | 113 | 220 | 30 | 18 | 139.72 | 190 | 171.45 | 24 | 6xM16 | 81 | 5 | 54 | 32.25 | 14.25 |
| NB-212A8 | 315 | 145 | 300 | 30 | 33 | 139.72 | 235 | 171.45 | 24 | 6xM20 | 122 | 6 | 79.5 | 33.75 | 11.25 |
| NB-212A11 | 315 | 134 | 300 | 30 | 22 | 196.87 | 260 | 235 | 28 | 6xM20 | 122 | 6 | 79.5 | 33.75 | 11.25 |
| NB-215A15 | 405 | 154 | 380 | 43 | 27 | 285.78 | 330.2 | 330.2 | 33 | 6xM24 | 142 | 6 | 93.5 | 45.25 | 15.25 |
| NB-218A15 | 457 | 154 | 380 | 43 | 27 | 285.78 | 330.2 | 330.2 | 33 | 6xM24 | 166.5 | 6 | 102 | 63.25 | 18.25 |
| Model/size | Pmax. | Pmin. | Q | R | S | T | Umax. | V | W | X | X2 | X3 | X4 | Illutration |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| NB-306A5 | 26 | 14 | 2 | 12 | 20 | 31 | M60x2 | 3xM6 | 65 | 16 | 36 | 65 | M8 | Fig-1 |
| NB-208A6 | 31.5 | 15.5 | 2 | 14 | 20 | 35 | M74x2 | 3xM6 | 80 | 16 | 45 | 80 | M8 | Fig-1 |
| NB-210A8 | 26.5 | 7.5 | 2 | 16 | 25 | 40 | M87x2 | 3xM8 | 94 | 16 | 60 | 102 | M10 | Fig-1 |
| NB-310A8 | 26.5 | 7.5 | 2 | 16 | 25 | 40 | M90x2 | 3xM8 | 97 | 16 | 60 | 102 | M10 | Fig-1 |
| NB-212A8 | 53 | 30 | 2 | 21 | 28 | 50 | M135x2 | 6xM16 | 143 | 20 | 60 | 138 | M10 | Fig-2 |
| NB-212A11 | 42 | 19 | 2 | 21 | 28 | 50 | M135x2 | 3xM10 | 143 | 20 | 60 | 138 | M10 | Fig-2 |
| NB-215A15 | 34 | 11 | 5 | 22 | 43 | 62 | M155x2 | 3xM12 | 164 | 20 | 80 | 160 | M12 | Fig-1 |
| NB-218A15 | 34 | 11 | 5 | 22 | 43 | 62 | M180x3 | 3xM12 | 189 | 20 | 100 | 160 | M12 |
Fig-1
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