MJS-CSK-EWH

Specs/CAD

Unit : mm

Part Number	Max. Bore Diameter (mm)	Rated Torque＊1 (N・m)	Max. Torque＊1 (N・m)	Max. Rotational (min-1)	Moment of Inertia＊2 (Kg・m2)	Static Torsional Stiffness (N・m/rad)	Max. Lateral Misalignment (mm)	Max. Angular Misalignment (°)	Max. Axial Misalignment (mm)	Sleeve Hardness	Mass＊2 (g)
MJS-25CSK-EWH	12	5	10	25000	2.5×10-6	60	0.15	1	0～+0.9	A92	25
MJS-30CSK-EWH	16	7.5	15	21000	5.4×10-6	73	0.15	1	0～+ 1.0	A92	38
MJS-40CSK-EWH	25	10	20	15000	2.7×10-5	570	0.1	1	0～+1.2	A92	96
MJS-55CSK-EWH	32	35	70	11000	1.0×10-4	1600	0.15	1	0～+1.4	A92	210
MJS-65CSK-EWH	38	95	190	9000	2.3×10-4	3000	0.15	1	0～+1.5	A92	330

＊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
	10	11	12	14	15	16	18	19	20	22	24	25	28	30	32	35	38
MJS-25CSK-EWH	●	●	●	-	-	-	-	-	-	-	-	-	-	-	-	-	-
MJS-30CSK-EWH	●	●	●	●	●	●	-	-	-	-	-	-	-	-	-	-	-
MJS-40CSK-EWH	●	●	●	●	●	●	●	●	●	●	●	●	-	-	-	-	-
MJS-55CSK-EWH	●	●	●	●	●	●	●	●	●	●	●	●	●	●	●	-	-
MJS-65CSK-EWH	-	-	-	●	●	●	●	●	●	●	●	●	●	●	●	●	●

●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.

Ambient Temperature / Temperature Correction Factor

Slip torque

As in the table below, the clamping type MJS-CS has different slip torque according to the bore diameter. Take care during selection.

Structure

Clamping Type MJS-CS-BLMJS-CS-EBLMJS-CS-EGRMJS-CS-ERDMJS-CS-EWHMJS-CS-GRMJS-CS-RDMJS-CS-WH

MJS-＊＊CS-＊＊Tight Fit
MJS-＊＊CS-E＊＊Easy Fit

Clamping + Key Type MJS-CSK-BLMJS-CSK-EBLMJS-CSK-EGRMJS-CSK-ERDMJS-CSK-EWHMJS-CSK-GRMJS-CSK-RDMJS-CSK-WH

MJS-＊＊CSK-＊＊Tight Fit
MJS-＊＊CSK-E＊＊Easy Fit

Sleeve

Material/Finish

Characteristics

• Applicable motors

• Property

• 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

Selection based on shaft diameter and rated torque

The area bounded by the shaft diameter and rated torque indicates is the selection size.

Selection Example

In 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.

Details of Shaft Hole

Eccentric Reaction Force

Sleeve Details

Easy Fit

This 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.

Tight Fit

The 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.

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.