MJS-20CS-EBL

Specs/CAD

mm inch

Part Number	Max. Bore Diameter (mm)	Rated Torque＊1 (N・m)Rated Torque＊1 (lbf in.)	Max. Torque＊1 (N・m)Max. Torque＊1 (lbf in.)	Max. Rotational (min-1)	Moment of Inertia＊2 (Kg・m2)Moment of Inertia＊2 (oz. in.2)	Static Torsional Stiffness (N・m/rad)Static Torsional Stiffness (lbf in./deg)	Max. Lateral Misalignment (mm)Max. Lateral Misalignment (in.)	Max. Angular Misalignment (°)	Max. Axial Misalignment (mm)Max. Axial Misalignment (in.)	Sleeve Hardness	Mass＊2 (g)Mass＊2 (oz)
MJS-20CS-EBL	8	1.815.93	3.631.86	31000	8.4×10-70.046	162.47	0.20.008	1	0～+ 0.80～+ 0.031	A80	150.53

＊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
	3	4	4.5	5	6	6.35	7	8	9.525	10	11	12	14	15	16	18	19	20	22	24	25	28	30	32	35	38
MJS-20CS-EBL	●	●	●	●	●	●	●	●	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-

●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.

Material/Finish

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

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.

Ambient Temperature / Temperature Correction Factor

Sleeve Details

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.

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.

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.

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.

Eccentric Reaction Force