More large bore:
The largest bore in wedge type power operated chucks.
20% large bore:
Approximately 20% higher speed, higher gripping force and larger bore compared with regular chucks.
Model NB-200A chucks are assembled with adaptor for ASA B5.9 type A spindles.
Model NB-200A chucks are manufactured form high grade alloy steel. All sliding surfaces are hardened and ground for accurate actual running and long service repeatability.
UNIT : mm
SPEC
Model
|
Through-Hole
(mm)
|
Plunger Stroke
(mm)
|
Jaw stroke
(In Dia.)
(mm)
|
Max.Pull
Force
(kn)
|
Max.Gripping
Force
(kn)
|
Max.Operating
Pressure
(kgf/cm2)
|
Max.Speed
(r.p.m.)
|
|
NB-306A5
|
Ø52
|
12
|
5.4
|
2243
|
5812
|
18.4
|
6000
|
|
NB-208A6
|
Ø66
|
16
|
7.4
|
3558
|
9075
|
20.5
|
5000
|
|
NB-210A8
|
Ø78
|
19
|
8.8
|
4385
|
11319
|
27.5
|
4200
|
|
NB-310A8
|
Ø81
|
19
|
8.8
|
4976
|
12848
|
31.5
|
4500
|
|
NB-212A8
|
Ø122
|
23
|
10.6
|
5812
|
14990
|
20.5
|
3200
|
|
NB-212A11
|
Ø122
|
23
|
10.6
|
5812
|
14990
|
20.5
|
3200
|
|
NB-215A15
|
Ø142
|
23
|
10.6
|
7240
|
18355
|
25.5
|
2500
|
|
NB-218A15
|
Ø166.5
|
23
|
10.6
|
7240
|
18355
|
25.5
|
2000
|
SPEC
Model
|
Weight
(kg)
|
Moment
Of Inertia
I(kg‧m2)
|
Matching
Cylinder
|
Matching
Hard Jaw
|
Matching
Soft Jaw
|
Gripping
O.D. Range
(mm)
|
|
NB-306A5
|
14
|
0.06
|
M1552
|
HJ06
|
HC06
|
Ø20-Ø170
|
|
NB-208A6
|
24
|
0.14
|
M1868
|
HJ08
|
HC08
|
Ø26-Ø210
|
|
NB-210A8
|
37.4
|
0.4
|
M1878
|
HJ10
|
HC10
|
Ø36-Ø254
|
|
NB-310A8
|
36.4
|
0.33
|
MK1881
|
HJ10
|
HC10
|
Ø37-Ø254
|
|
NB-212A8
|
72.2
|
1.04
|
M2511
|
HJ12
|
HC12
|
Ø59-Ø315
|
|
NB-212A11
|
65
|
0.95
|
M2511
|
HJ12
|
HC12
|
Ø59-Ø315
|
|
NB-215A15
|
130
|
3
|
M2816
|
HJ15
|
HC15
|
Ø59-Ø405
|
|
NB-218A15
|
161
|
4.77
|
M2816
|
HJ15
|
HC15
|
Ø78-Ø457
|
DIM
Model
|
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
|
DIM
Model
|
Pmax.
|
Pmin.
|
Q
|
R
|
S
|
T
|
Umax.
|
V
|
W
|
X
|
X2
|
X3
|
X4
|
Reference
|
|
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
|
