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NB-200A

3-jaw extra large through-hole power chuck
(adapter included)

3-jaw extra large through-hole power chuck (adapter included)
  • More 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.
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Drawings

3-jaw extra large through-hole power chuck (adapter included)

Specification

UNIT : mm
SPEC
Model		 Through
-Hole
(mm)		 Plunger
Stroke
(mm)		 Jaw
Stroke
(In Dia.)
(mm)		 Max.
Pull
Force
(kgf)		 Max.
Gripping
Force
(kgf)		 Max.
Operating
Pressure
(kgf / cm2)		 Max.
Speed
(r.p.m.)		 Weight
(kg)		 Moment
Of Inertia I
(kg‧m2 )		 Matching
Cylinder		 Matching
Hard Jaw		 Matching
Soft Jaw		 Gripping
O.D. Range
(mm)
NB-306A5 Ø52 12 5.4 2243 5812 18.4 6000 14 0.06 M1552 HJ06 HC06 Ø20~Ø170
NB-306A6 Ø52 12 5.4 2243 5812 18.4 6000 15.6 0.087 M1552 HJ06 HC06 Ø20~Ø170
NB-208A6 Ø66 16 7.4 3558 9075 22 5000 24 0.14 M1768 HJ08 HC08 Ø26~Ø210
NB-210A8 Ø78 19 8.8 4385 11319 27.5 4200 37.4 0.4 M1878 HJ10 HC10 Ø36~Ø256
NB-310A8 Ø81 19 8.8 4976 12848 31.5 4500 36.4 0.33 MK1881 HJ10 HC10 Ø37~Ø254
NB-212A8 Ø122 23 10.6 5812 14990 20.5 3200 72.2 1.04 M2511S HJ12 HC12 Ø59~Ø315
NB-212A11 Ø122 23 10.6 5812 14990 20.5 3200 65 0.95 M2511S HJ12 HC12 Ø59~Ø315
NB-215A15 Ø142 23 10.6 7240 18355 25.5 2500 130 3.0 ML2816 HJ15 HC15 Ø60~Ø405
NB-218A15 Ø166.5 23 10.6 7240 18355 25.5 2000 161 4.77 ML2816 HJ15 HC15 Ø78~Ø457
DIM
Model		 A B C
(H6)		 D E F G H J K L M N
max.		 O
max.		 O
min.		 P
max.		 P
min.		 Q R S T U
max.		 V W X Y Z
(H12)		 Z2 Z3 Z4 Z5 Reference
NB-306A5 170 91 140 20 15 82.563 116 104.78 14.5 6-M10 52 5 37 18.25 9.25 26 14 2 12 20 31 M60x2 3-M6 65 37 73 16 36 65 M8x15 63 Fig-1
NB-306A6 170 111 140 20 35 106.375 104.78 133.35 16 6-M10 52 5 37 18.25 9.25 46 34 2 12 20 31 M60x2 6-M12 65 37 73 16 36 65 M8x15 63 Fig-3
NB-208A6 210 103 170 25 17 106.375 150 133.35 19.5 6-M12 66 5 45.7 23.75 11.75 31.5 15.5 2 14 20 35 *M75x2 3-M6 80 38 95 16 45 80 M8x15 78 Fig-1
NB-210A8 256 113 220 30 18 139.719 190 171.45 24 6-M16 78 5 53 33.75 14.25 26.5 7.5 2 16 25 40 M87x2 3-M8 94 43 110 16 60 102 M10x20 91 Fig-1
NB-310A8 254 113 220 30 18 139.719 190 171.45 24 6-M16 81 5 54 32.25 14.25 26.5 7.5 2 16 25 40 M90x2 3-M8 97 43 110 16 60 102 M10x20 91 Fig-1
NB-212A8 315 145 300 30 33 139.719 235 171.45 24 6-M20 122 6 79.5 33.75 11.25 53 30 2 21 28 50 M135x2 6-M16 143 51 130 20 60 138 M10x10 123 Fig-2
NB-212A11 315 134 300 30 22 196.869 260 235 28 6-M20 122 6 79.5 33.75 11.25 42 19 2 21 28 50 M135x2 3-M10 143 51 130 20 60 138 M10x10 123 Fig-1
NB-215A15 405 154 380 43 27 285.775 330.2 330.2 33 6-M24 142 6 93.5 45.25 15.25 34 11 5 22 43 62 M155x2 3-M12 164 66 165 20 80 160 M12x22 145 Fig-1
NB-218A15 457 154 380 43 27 285.775 330.2 330.2 33 6-M24 166.5 6 102 63.25 18.25 34 11 5 22 43 62 M180x3 3-M12 189 66 165 20 100 160 M12x22 145 Fig-1

*Standard thread M74 x2