NBK COUPLING

NBK Gum Type flexible couplings

NBK Couplicon® XGT/ XGS

• NBK coupling XGT
• Vibration Absorbtion
• High Torque, High Response
• Zero Backlash
• XGT/XGS are protected by design patent. China : ZL2007 3 0154185.2, Korea : 30-0482301, Taiwan : D124815, U.S. : Pat. No. Des. D573,166
• Single piece structure with anti-vibration rubber molded between the two hubs
• Available in high torque variety XGT
• Identical clockwise and counter-clockwise rotational characteristics
• Exhibits excellent electrical insulation
• Operational temperature: -20C~80C
• Split Coupling
• Easy attachment and removal
• In Pursuit of Optimal Design; Using the latest FEM analysis techniques, the construction of the anti-vibration rubber is designed to yield high torsional stiffness and torque. Additionally, the shape is designed to relieve stress from the jaws' inner diameter. By distributing stress uniformly throughout the jaw, product longevity is significantly increased (patent pending).
• Application

  Servomotor	A
  Stepping Motor	A
  General-Purpose Motor	B
  Encoder	-

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NBK Couplicon® XGT : 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 Eccentricity (mm)	Errors of Angularity (°)	Errors of Shaft End-Play (mm)	Mass* (g)
XGT-15C	6	1.1	2.2	42000	2.7x10-7	43	0.15	1.5	±0.2	8
XGT-19C	8	2.1	4.2	33000	8.4x10-7	88	0.15	1.5	±0.2	14
XGT-25C	12	4	8	25000	3.0x10-6	170	0.15	1.5	±0.2	28
XGT-30C	15	6.3	12.6	21000	6.9x10-6	220	0.20	1.5	±0.3	45
XGT-34C	16	8	16	18000	1.3x10-5	390	0.20	1.5	±0.3	65
XGT-39C	20	13.5	27	16000	2.7x10-5	520	0.20	1.5	±0.3	98
XGT-44C	22	18	36	14000	4.2x10-5	640	0.20	1.5	±0.3	136
XGT-56C	28	35	70	11000	1.4x10-4	1500	0.20	1.5	±0.3	276

 

NBK Couplicon® XGS : 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 Eccentricity (mm)	Errors of Angularity (°)	Errors of Shaft End-Play (mm)	Mass* (g)
XGS-15C	6	0.5	1	42000	2.0x10-7	25	0.15	1.5	±0.2	7
XGS-19C	8	0.8	1.6	33000	6.2x10-7	63	0.15	1.5	±0.2	12
XGS-25C	12	2.3	4.6	25000	2.3x10-6	125	0.15	1.5	±0.2	25
XGS-30C	15	3.3	6.6	21000	5.5x10-6	160	0.20	1.5	±0.3	39
XGS-34C	16	5.5	11	18000	1.0x10-5	350	0.20	1.5	±0.3	62
XGS-39C	20	7	14	16000	2.1x10-5	440	0.20	1.5	±0.3	85

*Adjustment of rated and maximum torque specifications for load fluctuations is not required.
However, if operating temperature exceeds 30℃, please adjust rated torque and maximum torque as detailed in the table below.
The operational temperature range for XGT/XGS is -20℃~80℃. For more detailed information, please refer to NBK Coupling Selection Guidelines [PDF 171KB].
**Moment of inertia and mass figures based on maximum bore dimensions.

>> A New Maximum Speed Coupling Makes Its Debut! [PDF 421KB]

 

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