|Part Number||Max. Bore Diameter
|Max. Lateral Misalignment|
|Max. Angular Misalignment
|Max. Axial Misalignment|
＊1： Correction of rated torque and max. torque due to load fluctuation is not required.However, if ambient temperature exceeds 30°C, be sure to correct the rated torque and max. torque with temperature correction factor shown in the table.MJC's allowable operating temperature is -20°C to 60°C.
＊2： These are values with max. bore diameter.
|Part Number||Standard bore diameter D1-D2|
●All products are provided with hex socket head cap screw.
●Recommended dimensional allowances of applicable shaft diameter are h6 and h7.
●A set of hubs with clamping type for one side and clamping + key type for the other side is available upon request.
●In case of mounting on D-cut shaft, be careful about the position of the D-cut surface of the shaft.
●For the shaft insertion amount to the coupling, see Mounting/maintenance. ⇒Mounting and Maintenance
|Hex Socket Head Cap Screw||SCM435
Ferrosoferric Oxide Film (Black)
Clamping + Key Type MJS-CSK-BLMJS-CSK-EBLMJS-CSK-EGRMJS-CSK-ERDMJS-CSK-EWHMJS-CSK-GRMJS-CSK-RDMJS-CSK-WHMJS-＊＊CSK-＊＊Tight Fit
- Applicable motors
|Tight Fit||Easy Fit|
|Tight Fit||Easy Fit|
|-20℃ to 60℃||-20℃ to 60℃|
- This is a jaw type flexible coupling.
- It is a short type and more compact than MJC.
- Tight Fit enables transmission with zero backlash at low torque.
- Easy fit allows assembling and separation of hubs.
- Excellent flexibility allows eccentricity, angular misalignment and twisting vibration to be accepted.
- It has electrical insulation. Resistance value: Not less than 2 MΩ
- Sleeve Type
Selection based on shaft diameter and rated torqueThe area bounded by the shaft diameter and rated torque indicates is the selection size.
Selection ExampleIn case of selected parameters of shaft diameter of φ15 and load torque of 6 N•m, the selected size for MJS-＊＊CS-RD, MJS-＊＊CS-ERD is MJS-30CS-RD, MJS-30CS-ERD.
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|
Tight FitThe hub and sleeve are press-fit and can be used under zero backlash＊1.Since the sleeve's vibration absorption can raise the gain of a servomotor, this unit can achieve high responsive operation exceeding the Disk coupling.
＊1： For the torque used under zero backlash, please refer to Performance table.
Easy FitThis unit allows you to easily assemble and partition the hub and sleeve.
This allows you to reduce the time of assembling the unit and maintenance.
It is possible to mount a hub on the shaft in advance and easily assemble the unit even in a location where the coupling is less-visible.
Slip torqueAs in the table below, the clamping type MJS-CS has different slip torque according to the bore diameter. Take care during selection.
|Part Number||Bore Diameter (mm)|
Change in static torsional stiffness due to temperature
This is a value under the condition where the static torsional stiffness at 20°C is 100%.
The change of torsional stiffness within the range of allowable operating temperature is as shown in the graph.
Before using the unit, be aware of the deterioration of responsiveness.