NBK COUPLING
NBK Single Disk Flexible Coupling
NBK Couplicon® XBS / XBSS 
- NBK coupling XBS/XBSS; high torque ,zero blacklash, Flexible disk coupler.
- Compact design with short overall length
- Stainless steel disks absorb angular and shaft end-play misalignments, but do not absorb parallel misalignment
- Identical clockwise and counter-clockwise rotational characteristics
- XBS hub is manufactured from extra super duralumin (A7075) – the highest strength aluminum alloy
- XBSS features all stainless steel structure
- Available in a wide range of sizes. Outer diameter: φ15~φ104
- Bore Diameter: φ3~φ50
- Finished products featuring two different end bore diameters available in stock
- Application
Servomotor A Stepping Motor A General-Purpose Motor – Encoder –
NBK Couplicon® XBS / XBSS: Specifications
|
Catalog
Number |
Max. Bore
(mm) |
Rated
Torque (N·m) |
Max.
Torque (N·m) |
Max. Rotational
Frequency (min-1) |
Moment
of Inertia* (kg·m2) |
Static Torsional
Stiffness (N·m/rad) |
Errors of
Angularity (°) |
Errors of
Shaft End-Play (mm) |
Mass*
(g) |
|---|---|---|---|---|---|---|---|---|---|
|
XBS-15C2
|
6
|
0.6
|
1.2
|
42000
|
9.8×10-8
|
300
|
0.5
|
±0.1
|
5
|
|
XBS-19C2
|
8
|
1
|
2
|
33000
|
2.9×10-7
|
600
|
1
|
±0.1
|
9
|
|
XBS-25C2
|
12
|
2
|
4
|
25000
|
1.1×10-6
|
1300
|
1
|
±0.2
|
17
|
|
XBS-27C2
|
14
|
2.2
|
4.4
|
23000
|
1.4×10-6
|
1600
|
1
|
±0.2
|
21
|
|
XBS-34C3
|
16
|
4.2
|
8.4
|
18000
|
4.0×10-6
|
2500
|
1
|
±0.3
|
43
|
|
XBS-39C2
|
20
|
8
|
16
|
16000
|
9.8×10-6
|
4600
|
1
|
±0.3
|
83
|
|
XBS-44C2
|
22
|
10
|
20
|
14000
|
1.6×10-5
|
6000
|
1
|
±0.3
|
105
|
|
XBS-56C3
|
28
|
25
|
50
|
11000
|
5.7×10-5
|
14000
|
1
|
±0.4
|
232
|
|
XBS-68C5
|
32
|
60
|
120
|
9000
|
1.6×10-4
|
25000
|
1
|
±0.5
|
388
|
|
XBS-82C5
|
35
|
80
|
160
|
7000
|
4.2×10-4
|
42000
|
1
|
±0.6
|
740
|
|
XBS-94C7
|
45
|
150
|
300
|
6000
|
6.9×10-4
|
55000
|
1
|
±0.7
|
960
|
|
XBS-104C8
|
50
|
200
|
400
|
6000
|
1.1×10-3
|
68000
|
1
|
±0.7
|
1180
|
|
XBSS-15C2
|
6
|
0.5
|
1
|
42000
|
2.3×10-7
|
500
|
0.5
|
±0.1
|
15
|
|
XBSS-19C2
|
8
|
1
|
2
|
33000
|
7.4×10-7
|
1000
|
1
|
±0.1
|
29
|
|
XBSS-25C2
|
12
|
1.2
|
2.4
|
25000
|
2.8×10-6
|
1500
|
1
|
±0.2
|
53
|
|
XBSS-27C2
|
14
|
1.5
|
3
|
23000
|
3.8×10-6
|
2100
|
1
|
±0.2
|
67
|
|
XBSS-34C3
|
16
|
3.5
|
7
|
18000
|
1.1×10-5
|
3800
|
1
|
±0.3
|
115
|
|
XBSS-39C2
|
20
|
5
|
10
|
16000
|
2.3×10-5
|
5500
|
1
|
±0.3
|
185
|
|
XBSS-44C2
|
22
|
7
|
14
|
14000
|
3.9×10-5
|
7000
|
1
|
±0.3
|
305
|
|
XBSS-56C3
|
28
|
15
|
30
|
11000
|
1.4×10-4
|
15000
|
1
|
±0.4
|
610
|
*Adjustment of rated and maximum torque specifications for load fluctuations is not required.
For more detailed information, please refer to NBK Couplicon Selection Guidelines [PDF 171KB].
**Moment of inertia and mass figures based on maximum bore dimensions.
