NBK COUPLING

NBK Double Disk Flexible Coupling

NBK Couplicon® XBW / XBWS

• NBK coupling ; high torque ,zero blacklash, Flexible disk coupler.
• Stainless steel disks absorb parallel, angular and shaft end-play misalignments
• Identical clockwise and counter-clockwise rotational characteristics
• XBW hub is manufactured from extra super duralumin (A7075)
• The highest strength aluminum alloy
• XBWS 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® XBW / XBWS : Specifications

NBK Catalogue no.	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 Eccentricity (mm)	Errors of Angularity (°)	Errors of Shaft End-Play (mm)	Mass* (g)
XBW-15C2	6	0.6	1.2	42000	2.2x10-7	200	0.05	1	±0.2	7.5
XBW-19C2	8	1	2	33000	6.7x10-7	450	0.15	2	±0.2	14
XBW-25C2	12	2	4	25000	2.3x10-6	850	0.2	2	±0.4	24
XBW-27C2	14	2.2	4.4	23000	3.1x10-6	1000	0.2	2	±0.4	30
XBW-34C3	16	4.2	8.4	18000	9.0x10-6	1600	0.25	2	±0.6	63
XBW-39C2	20	8	16	16000	2.1x10-5	3200	0.3	2	±0.6	120
XBW-44C2	22	10	20	14000	3.5x10-5	3900	0.3	2	±0.6	151
XBW-56C3	28	25	50	11000	1.2x10-4	9000	0.3	2	±0.8	322
XBW-68C5	32	60	120	9000	3.5x10-4	18000	0.3	2	±1	617
XBW-82C5	35	80	160	7000	9.0x10-4	35000	0.5	2	±1.2	1220
XBW-94C7	45	150	300	6000	1.5x10-3	40000	0.5	2	±1.4	1500
XBW-104C8	50	200	400	6000	2.3x10-3	50000	0.5	2	±1.4	1820
XBWS-15C2	6	0.5	1	42000	5.0x10-7	300	0.05	1	±0.2	20
XBWS-19C2	8	1	2	33000	1.6x10-6	550	0.15	2	±0.2	38
XBWS-25C2	12	1.2	2.4	25000	6.1x10-6	1100	0.2	2	±0.4	71
XBWS-27C2	14	1.5	3	23000	8.2x10-6	1300	0.2	2	±0.4	88
XBWS-34C3	16	3.5	7	18000	2.5x10-5	1800	0.25	2	±0.6	160
XBWS-39C2	20	5	10	16000	5.1x10-5	3500	0.3	2	±0.6	260
XBWS-44C2	22	7	14	14000	8.9x10-5	5500	0.3	2	±0.6	400
XBWS-56C3	28	15	30	11000	2.9x10-4	10000	0.3	2	±0.8	800

*Adjustment of rated and maximum torque specifications for load fluctuations is not required.
For more detailed information, please refer to NBK Coupling Selection Guideline [PDF 171KB].
**Moment of inertia and mass figures based on maximum bore dimensions.

 

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