• Couplings
  • Jaw Type

MJS-40CSK-EWH-24-24

Flexible Coupling - Jaw-Type (Short) - Clamping + Key Type

Dimension Drawing

MJS-CSK-EWHFlexible Coupling - Jaw-Type (Short) - Clamping + Key Type寸法図

MJS-CSK-EWHFlexible Coupling - Jaw-Type (Short) - Clamping + Key Type寸法図

MJS-CSK-EWHFlexible Coupling - Jaw-Type (Short) - Clamping + Key Type寸法図

Specs/CAD

Part Number ALWBCEFGM Wrench
Torque
(N・m)
Price
(USD)
CAD Add to Cart
MJS-40CSK-EWH-24-24 40 17 50 12 2 17 8.5 14
15.75
M5
M4
8
3.5
85.29 CAD Cart

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-40CSK-EWH-24-24 25 10 20 15000 2.7×10-5 570 0.1 1 0~+1.2 A92 96

*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.

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

MJS-CS-BL/MJS-CS-EBL//MJS-CSK-WH_CFlexible Coupling - Jaw-Type (Short)

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

MJS-CS-BL/MJS-CS-EBL//MJS-CSK-WH_CFlexible Coupling - Jaw-Type (Short)

Sleeve

MJS-CS-BL/MJS-CS-EBL//MJS-CSK-WH_CFlexible Coupling - Jaw-Type (Short)


Material/Finish

MJS-CS/MJS-CSK
Hub A2017
Alumite Treatment
Sleeve Polyurethane
Hex Socket Head Cap Screw SCM435
Ferrosoferric Oxide Film (Black)

Characteristics

  • Applicable motors
Tight Fit Easy Fit
Servomotor
Stepping Motor
General-Purpose Motor

◎: Excellent ○: Very good ●: Available

  • Property
Tight Fit Easy Fit
Zero Backlash -
High Torque
Allowable Misalignment
Vibration Absorption
Electrical Insulation
Assembling
Allowable Operating
Temperature
-20℃ to 60℃ -20℃ to 60℃

◎: Excellent ○: Very good

  • 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

MJS-CS-BL/MJS-CS-EBL//MJS-CSK-WH_CFlexible Coupling - Jaw-Type (Short)


Selection

Selection based on shaft diameter and rated torque

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

MJS-CS-BL/MJS-CS-EBL//MJS-CSK-WH_CFlexible Coupling - Jaw-Type (Short)

MJS-CS-BL/MJS-CS-EBL//MJS-CSK-WH_CFlexible Coupling - Jaw-Type (Short)

MJS-CS-BL/MJS-CS-EBL//MJS-CSK-WH_CFlexible Coupling - Jaw-Type (Short)

MJS-CS-BL/MJS-CS-EBL//MJS-CSK-WH_CFlexible Coupling - Jaw-Type (Short)

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

Ambient Temperature Temperature Correction Factor
-20℃ to 30℃ 1.00
30℃ to 40℃ 0.80
40℃ to 60℃ 0.70

Details of Shaft Hole

MJS-CSK-EWHFlexible Coupling - Jaw-Type (Short) - Clamping + Key Type

Standard Bore Diameter
D
Keyway Key
b t Nominal Dimension
b x h
Standard
Dimension
Allowance
(JS9)
Standard
Dimension
Allowance
10・11・12 4 ±0.0150 1.8 0 to +0.1 4×4
14・15・16 5 ±0.0150 2.3 0 to +0.1 5×5
18・19・20・22 6 ±0.0150 2.8 0 to +0.1 6×6
24・25・28・30 8 ±0.0180 3.3 0 to +0.2 8×7
32・35・38 10 ±0.0180 3.3 0 to +0.2 10×8

Sleeve Details

MJS-CSK-EWHFlexible Coupling - Jaw-Type (Short) - Clamping + Key Type


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.

*1: For the torque used under zero backlash, please refer to Performance table.

MJS-CS-BL/MJS-CS-EBL//MJS-CSK-WH_CFlexible Coupling - Jaw-Type (Short)


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.

Unit : N・m

Part Number Bore Diameter (mm)
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 0.8 1.7 2.2 2.6 3.5 3.8 4.4 5.3
MJS-30CS 7 7.6 8.7 10 13 14 16 17 14 16 17
MJS-40CS 28 35 37
MJS-55CS 40 46 53 66 72 79 92 98 100 110 130 130 140
MJS-65CS 110 120 130 150 160 170 190 210 220 260 280 300 300 300

These are test values based on the conditions of shaft dimensional allowance: h7, hardness: 34-40 HRC, and screw tightening torque of the values described in MJS-CS dimension tables. They are not guaranteed values.
Slip torque changes with usage conditions. Carry out tests under conditions similar to actual conditions in advance.


Change in static torsional stiffness due to temperature

MJS-CS-BL/MJS-CS-EBL//MJS-CSK-WH_TTechnical Information

MJS-CS-BL/MJS-CS-EBL//MJS-CSK-WH_TTechnical Information

MJS-CS-BL/MJS-CS-EBL//MJS-CSK-WH_TTechnical Information

MJS-CS-BL/MJS-CS-EBL//MJS-CSK-WH_TTechnical Information

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

MJS-CS-BL/MJS-CS-EBL//MJS-CSK-WH_TTechnical Information

MJS-CS-BL/MJS-CS-EBL//MJS-CSK-WH_TTechnical Information

MJS-CS-BL/MJS-CS-EBL//MJS-CSK-WH_TTechnical Information

MJS-CS-BL/MJS-CS-EBL//MJS-CSK-WH_TTechnical Information


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