|Part Number||Max. Bore Diameter
|Keyway Additional Modification Max. Bore Diameter
|Max. Rotational Frequency
|Moment of |
|Max. Lateral Misalignment|
|Max. Axial |
＊1： Correction of rated torque due to load fluctuation is not required. If ambient temperature exceeds 30°C, be sure to correct the rated torque with temperature correction factor shown in the following table.
The allowable operating temperature of XGS is -20°C to 80°C.
※ The shaft's slip torque may be smaller than the coupling's rated torque depending on the shaft bore. ⇒Slip torque＊2： These are values with max. bore diameter.
|Part Number||Standard Bore Diameter (Dimensional Allowance H8)
●All products are provided with hex socket set screws.
● Recommended tolerance for shaft diameters is h6 and h7.
Ambient Temperature / Temperature Correction Factor
|Ambient Temperature||Temperature Correction Factor|
|-20℃ to 30℃||1.00|
|30℃ to 40℃||0.80|
|40℃ to 60℃||0.70|
|60℃ to 80℃||0.55|
Slip torqueAs in the table below, the clamping types XGT-C, XGT-CS, XGS-C, XGS-CS, and XGL-C have different slip torque according to the bore diameter. Take care during selection.
|Outside Diameter||Bore Diameter (mm)|
Set Screw TypeXGT Standard typeXGT
XGS Short typeXGS
Single Clamping TypeXGT-CS Standard typeXGT-CS
XGS-CS Short typeXGS-CS
Double Clamping TypeXGT-C Standard typeXGT-C
XGL-C Long typeXGL-C
XGS-C Short typeXGS-C
XGT-C XGL-C XGS-C Split TypeEasy to mount and remove screws.
The designed shape of vibration-absorbing rubber achieves high torsional stiffness and high torque according to the newest finite element method. This product also succeeds in elongating its life by evenly dispersing the stress focusing on around the inner diameter of the jaw throughout the entire jaw.
|Hex Socket Head Cap Screw / Hex Socket Set Screw||SCM435
Ferrosoferric Oxide Film (Black)
- Recommended Applicable Motor
|For Servomotor High Gain||◎|
|High Torsional Stiffness||○|
|Vibration Absorption Characteristics||◎|
|Allowable Operating Temperature||-20℃ to 80℃|
- A completely integrated flexible coupling that connects hubs on both sides with high-gain rubber.
- It is suitable for control motors with high responsiveness, enabling high-accuracy positioning and shortened stabilization time.
- About reduction of stabilization time XGT2XGL2
ApplicationActuator / Surface-mount machine / High precision XY stage / Index table
Selection Based on Shaft Diameter and Rated TorqueThe area bounded by the shaft diameter and rated torque indicates the selection size.
Selection ExampleIn case of selected parameters of shaft diameter of φ19 and load torque of 7 N•m, the selected size is XGT-39C.
Selection Based on the Rated Output of the Servomotor
|Servomotor Specifications＊1||Selection Size|
|Diameter of Motor Shaft
|Instantaneous Max. Torque
|10||5 - 6||0.032||0.096||15C||15C||15C|
|20||5 - 6||0.064||0.19||15C||15C||15C|
|30||5 - 7||0.096||0.29||19C||19C||19C|
|50||6 - 8||0.16||0.48||19C||19C||19C|
|200||9 - 14||0.64||1.9||27C||30C||27C|
|750||16 - 19||2.4||7.2||39C||39C||-|
Eccentric Reaction Force
This is the force generated when placing XGTXGLXGS in an eccentric condition. As the eccentric reaction force becomes smaller, the force acting on the shaft bearing also becomes smaller.
Thrust reaction force
This is the force generated when compressing XGTXGLXGS in the axial direction. As the thrust reaction force becomes smaller, the force acting on the motor also becomes smaller.
Change in static torsional stiffness due to temperatureThis is a value under the condition where the static torsional stiffness at 20°C is 100%.
Changes in the static torsion spring constant within the operating temperature are shown in the graph.
Before using the unit, be aware of the deterioration of responsiveness.