• Couplings
  • Slit Type

MSX

Flexible Couplings - Slit Type - Set Screw Type

Safety PrecautionsGlossaryMounting/maintenance

RoHS Compliant

  • Zero Backlash
  • High torsional rigidity
  • Single-Piece Construction
MSX/MSX-C_CFlexible Couplings - Slit Type

Dimension Drawing

MSXFlexible Couplings - Slit Type - Set Screw Type寸法図

Specs/CAD

Part Number ALWFM Screw Tightening
Torque (N・m)		Standard Bore Diameter (Dimensional Allowance H8)
D1-D2		 Price
(USD)		 CAD
Download		 Add to Cart Additional Modification
MSX-16 16 6 17.4 3 M3 0.7 32.99 CAD Cart       
MSX-19 19 6.8 20 3.4 M3 0.7 37.62 CAD Cart       
MSX-24 24 8.5 25 4.25 M4 1.7 43.48 CAD Cart       
MSX-29 29 10.2 30 5.1 M4 1.7 49.32 CAD Cart       
MSX-34 34 12 35 6 M5 4 68.93 CAD Cart       
MSX-39 39 13.5 40 6.75 M5 4 73.28 CAD Cart       
MSX-44 44 15.5 45 7.75 M6 7 85.27 CAD Cart       

Part Number Max. Bore Diameter
(mm)		 Rated
Torque＊1
(N・m)		Max. Rotational Frequency
(min-1)		 Moment of
Inertia
(kg・m2)＊2		Static
Torsional
Stiffness
(N･m/rad)		Max. Lateral Misalignment
(mm)		Max. Angular
Misalignment
(°)		 Max. Axial
Misalignment
(mm)		Mass
(g) ＊2
MSX-16 8 0.5 39000 2.8×10-7 200 0.05 0.5 ±0.1 7
MSX-19 10 1 33000 6.2×10-7 270 0.05 0.5 ±0.1 10
MSX-24 12 1.5 26000 2.0×10-6 790 0.05 0.5 ±0.1 22
MSX-29 14 2 21000 5.2×10-6 1400 0.05 0.5 ±0.1 40
MSX-34 18 3 18000 1.1×10-5 2200 0.05 0.5 ±0.1 64
MSX-39 20 6 16000 2.9×10-5 4100 0.05 0.5 ±0.1 90
MSX-44 22 9 14000 5.5×10-5 5100 0.05 0.5 ±0.1 133

＊1：　Correction of rated torque due to load fluctuation is not required. For more detailed information, please refer to Selection Guidelines.
＊2：　These are values with max. bore diameter.

Part Number Standard Bore Diameter (Dimensional Allowance H8)
D1･D2
MSX-16 5-5 5-6 6-6    
MSX-19 5-5 5-6 5-7 5-8 6-6
6-6.35 6-7 6-8 6.35-6.35 6.35-8
8-8 8-10 10-10    
MSX-24 6-6 6-8 6-10 6.35-6.35 6.35-8
6.35-10 7-8 8-8 8-9.525 8-10
9.525-10 10-10 10-11 10-12 11-12
12-12        
MSX-29 8-8 8-10 8-11 8-12 10-10
10-11 10-12 10-14 11-12 11-14
12-12 12-14      
MSX-34 10-14 11-14 12-12 12-14 12-16
14-14 14-15 14-16 15-15 15-16
16-16        
MSX-39 10-14 12-12 12-14 12-15 12-16
12-19 14-14 14-15 15-15 15-16
16-16        
MSX-44 12-12 12-14 12-19 14-14 14-15
14-16 15-15 15-16 15-19 15-20
20-20        

●All products are provided with hex socket set screws.
● Recommended tolerance for shaft diameters is h6 and h7.
● Bore and keyway modifications are available on request. Please take advantage of our modification services.


Part Number Standard Bore Diameter (Dimensional Allowance H8)
D1･D2
MSX-16-5-5 5-5
5-6
6-6
MSX-16-5-6 5-5
5-6
6-6
MSX-16-6-6 5-5
5-6
6-6
MSX-19-5-5 5-5
5-6
5-7
5-8
6-6
6-6.35
6-7
6-8
6.35-6.35
6.35-8
8-8
8-10
10-10
MSX-19-5-6 5-5
5-6
5-7
5-8
6-6
6-6.35
6-7
6-8
6.35-6.35
6.35-8
8-8
8-10
10-10
MSX-19-5-7 5-5
5-6
5-7
5-8
6-6
6-6.35
6-7
6-8
6.35-6.35
6.35-8
8-8
8-10
10-10
MSX-19-5-8 5-5
5-6
5-7
5-8
6-6
6-6.35
6-7
6-8
6.35-6.35
6.35-8
8-8
8-10
10-10
MSX-19-6-6 5-5
5-6
5-7
5-8
6-6
6-6.35
6-7
6-8
6.35-6.35
6.35-8
8-8
8-10
10-10
MSX-19-6-6.35 5-5
5-6
5-7
5-8
6-6
6-6.35
6-7
6-8
6.35-6.35
6.35-8
8-8
8-10
10-10
MSX-19-6-7 5-5
5-6
5-7
5-8
6-6
6-6.35
6-7
6-8
6.35-6.35
6.35-8
8-8
8-10
10-10
MSX-19-6-8 5-5
5-6
5-7
5-8
6-6
6-6.35
6-7
6-8
6.35-6.35
6.35-8
8-8
8-10
10-10
MSX-19-6.35-6.35 5-5
5-6
5-7
5-8
6-6
6-6.35
6-7
6-8
6.35-6.35
6.35-8
8-8
8-10
10-10
MSX-19-6.35-8 5-5
5-6
5-7
5-8
6-6
6-6.35
6-7
6-8
6.35-6.35
6.35-8
8-8
8-10
10-10
MSX-19-8-8 5-5
5-6
5-7
5-8
6-6
6-6.35
6-7
6-8
6.35-6.35
6.35-8
8-8
8-10
10-10
MSX-19-8-10 5-5
5-6
5-7
5-8
6-6
6-6.35
6-7
6-8
6.35-6.35
6.35-8
8-8
8-10
10-10
MSX-19-10-10 5-5
5-6
5-7
5-8
6-6
6-6.35
6-7
6-8
6.35-6.35
6.35-8
8-8
8-10
10-10
MSX-24-6-6 6-6
6-8
6-10
6.35-6.35
6.35-8
6.35-10
7-8
8-8
8-9.525
8-10
9.525-10
10-10
10-11
10-12
11-12
12-12
MSX-24-6-8 6-6
6-8
6-10
6.35-6.35
6.35-8
6.35-10
7-8
8-8
8-9.525
8-10
9.525-10
10-10
10-11
10-12
11-12
12-12
MSX-24-6-10 6-6
6-8
6-10
6.35-6.35
6.35-8
6.35-10
7-8
8-8
8-9.525
8-10
9.525-10
10-10
10-11
10-12
11-12
12-12
MSX-24-6.35-6.35 6-6
6-8
6-10
6.35-6.35
6.35-8
6.35-10
7-8
8-8
8-9.525
8-10
9.525-10
10-10
10-11
10-12
11-12
12-12
MSX-24-6.35-8 6-6
6-8
6-10
6.35-6.35
6.35-8
6.35-10
7-8
8-8
8-9.525
8-10
9.525-10
10-10
10-11
10-12
11-12
12-12
MSX-24-6.35-10 6-6
6-8
6-10
6.35-6.35
6.35-8
6.35-10
7-8
8-8
8-9.525
8-10
9.525-10
10-10
10-11
10-12
11-12
12-12
MSX-24-7-8 6-6
6-8
6-10
6.35-6.35
6.35-8
6.35-10
7-8
8-8
8-9.525
8-10
9.525-10
10-10
10-11
10-12
11-12
12-12
MSX-24-8-8 6-6
6-8
6-10
6.35-6.35
6.35-8
6.35-10
7-8
8-8
8-9.525
8-10
9.525-10
10-10
10-11
10-12
11-12
12-12
MSX-24-8-9.525 6-6
6-8
6-10
6.35-6.35
6.35-8
6.35-10
7-8
8-8
8-9.525
8-10
9.525-10
10-10
10-11
10-12
11-12
12-12
MSX-24-8-10 6-6
6-8
6-10
6.35-6.35
6.35-8
6.35-10
7-8
8-8
8-9.525
8-10
9.525-10
10-10
10-11
10-12
11-12
12-12
MSX-24-9.525-10 6-6
6-8
6-10
6.35-6.35
6.35-8
6.35-10
7-8
8-8
8-9.525
8-10
9.525-10
10-10
10-11
10-12
11-12
12-12
MSX-24-10-10 6-6
6-8
6-10
6.35-6.35
6.35-8
6.35-10
7-8
8-8
8-9.525
8-10
9.525-10
10-10
10-11
10-12
11-12
12-12
MSX-24-10-11 6-6
6-8
6-10
6.35-6.35
6.35-8
6.35-10
7-8
8-8
8-9.525
8-10
9.525-10
10-10
10-11
10-12
11-12
12-12
MSX-24-10-12 6-6
6-8
6-10
6.35-6.35
6.35-8
6.35-10
7-8
8-8
8-9.525
8-10
9.525-10
10-10
10-11
10-12
11-12
12-12
MSX-24-11-12 6-6
6-8
6-10
6.35-6.35
6.35-8
6.35-10
7-8
8-8
8-9.525
8-10
9.525-10
10-10
10-11
10-12
11-12
12-12
MSX-24-12-12 6-6
6-8
6-10
6.35-6.35
6.35-8
6.35-10
7-8
8-8
8-9.525
8-10
9.525-10
10-10
10-11
10-12
11-12
12-12
MSX-29-8-8 8-8
8-10
8-11
8-12
10-10
10-11
10-12
10-14
11-12
11-14
12-12
12-14
MSX-29-8-10 8-8
8-10
8-11
8-12
10-10
10-11
10-12
10-14
11-12
11-14
12-12
12-14
MSX-29-8-11 8-8
8-10
8-11
8-12
10-10
10-11
10-12
10-14
11-12
11-14
12-12
12-14
MSX-29-8-12 8-8
8-10
8-11
8-12
10-10
10-11
10-12
10-14
11-12
11-14
12-12
12-14
MSX-29-10-10 8-8
8-10
8-11
8-12
10-10
10-11
10-12
10-14
11-12
11-14
12-12
12-14
MSX-29-10-11 8-8
8-10
8-11
8-12
10-10
10-11
10-12
10-14
11-12
11-14
12-12
12-14
MSX-29-10-12 8-8
8-10
8-11
8-12
10-10
10-11
10-12
10-14
11-12
11-14
12-12
12-14
MSX-29-10-14 8-8
8-10
8-11
8-12
10-10
10-11
10-12
10-14
11-12
11-14
12-12
12-14
MSX-29-11-12 8-8
8-10
8-11
8-12
10-10
10-11
10-12
10-14
11-12
11-14
12-12
12-14
MSX-29-11-14 8-8
8-10
8-11
8-12
10-10
10-11
10-12
10-14
11-12
11-14
12-12
12-14
MSX-29-12-12 8-8
8-10
8-11
8-12
10-10
10-11
10-12
10-14
11-12
11-14
12-12
12-14
MSX-29-12-14 8-8
8-10
8-11
8-12
10-10
10-11
10-12
10-14
11-12
11-14
12-12
12-14
MSX-34-10-14 10-14
11-14
12-12
12-14
12-16
14-14
14-15
14-16
15-15
15-16
16-16
MSX-34-11-14 10-14
11-14
12-12
12-14
12-16
14-14
14-15
14-16
15-15
15-16
16-16
MSX-34-12-12 10-14
11-14
12-12
12-14
12-16
14-14
14-15
14-16
15-15
15-16
16-16
MSX-34-12-14 10-14
11-14
12-12
12-14
12-16
14-14
14-15
14-16
15-15
15-16
16-16
MSX-34-12-16 10-14
11-14
12-12
12-14
12-16
14-14
14-15
14-16
15-15
15-16
16-16
MSX-34-14-14 10-14
11-14
12-12
12-14
12-16
14-14
14-15
14-16
15-15
15-16
16-16
MSX-34-14-15 10-14
11-14
12-12
12-14
12-16
14-14
14-15
14-16
15-15
15-16
16-16
MSX-34-14-16 10-14
11-14
12-12
12-14
12-16
14-14
14-15
14-16
15-15
15-16
16-16
MSX-34-15-15 10-14
11-14
12-12
12-14
12-16
14-14
14-15
14-16
15-15
15-16
16-16
MSX-34-15-16 10-14
11-14
12-12
12-14
12-16
14-14
14-15
14-16
15-15
15-16
16-16
MSX-34-16-16 10-14
11-14
12-12
12-14
12-16
14-14
14-15
14-16
15-15
15-16
16-16
MSX-39-10-14 10-14
12-12
12-14
12-15
12-16
12-19
14-14
14-15
15-15
15-16
16-16
MSX-39-12-12 10-14
12-12
12-14
12-15
12-16
12-19
14-14
14-15
15-15
15-16
16-16
MSX-39-12-14 10-14
12-12
12-14
12-15
12-16
12-19
14-14
14-15
15-15
15-16
16-16
MSX-39-12-15 10-14
12-12
12-14
12-15
12-16
12-19
14-14
14-15
15-15
15-16
16-16
MSX-39-12-16 10-14
12-12
12-14
12-15
12-16
12-19
14-14
14-15
15-15
15-16
16-16
MSX-39-12-19 10-14
12-12
12-14
12-15
12-16
12-19
14-14
14-15
15-15
15-16
16-16
MSX-39-14-14 10-14
12-12
12-14
12-15
12-16
12-19
14-14
14-15
15-15
15-16
16-16
MSX-39-14-15 10-14
12-12
12-14
12-15
12-16
12-19
14-14
14-15
15-15
15-16
16-16
MSX-39-15-15 10-14
12-12
12-14
12-15
12-16
12-19
14-14
14-15
15-15
15-16
16-16
MSX-39-15-16 10-14
12-12
12-14
12-15
12-16
12-19
14-14
14-15
15-15
15-16
16-16
MSX-39-16-16 10-14
12-12
12-14
12-15
12-16
12-19
14-14
14-15
15-15
15-16
16-16
MSX-44-12-12 12-12
12-14
12-19
14-14
14-15
14-16
15-15
15-16
15-19
15-20
20-20
MSX-44-12-14 12-12
12-14
12-19
14-14
14-15
14-16
15-15
15-16
15-19
15-20
20-20
MSX-44-12-19 12-12
12-14
12-19
14-14
14-15
14-16
15-15
15-16
15-19
15-20
20-20
MSX-44-14-14 12-12
12-14
12-19
14-14
14-15
14-16
15-15
15-16
15-19
15-20
20-20
MSX-44-14-15 12-12
12-14
12-19
14-14
14-15
14-16
15-15
15-16
15-19
15-20
20-20
MSX-44-14-16 12-12
12-14
12-19
14-14
14-15
14-16
15-15
15-16
15-19
15-20
20-20
MSX-44-15-15 12-12
12-14
12-19
14-14
14-15
14-16
15-15
15-16
15-19
15-20
20-20
MSX-44-15-16 12-12
12-14
12-19
14-14
14-15
14-16
15-15
15-16
15-19
15-20
20-20
MSX-44-15-19 12-12
12-14
12-19
14-14
14-15
14-16
15-15
15-16
15-19
15-20
20-20
MSX-44-15-20 12-12
12-14
12-19
14-14
14-15
14-16
15-15
15-16
15-19
15-20
20-20
MSX-44-20-20 12-12
12-14
12-19
14-14
14-15
14-16
15-15
15-16
15-19
15-20
20-20

●All products are provided with hex socket set screws.
● Recommended tolerance for shaft diameters is h6 and h7.
● Bore and keyway modifications are available on request. Please take advantage of our modification services.

Part Number
Amount
Price（＄）

Check other products Cart

　　　　　　

Additional Modification Service

Modified Part Number

Enter the desired bore diameter and then click [Check Modified Part Number].

Standard bore diameter(D1) Standard bore diameter(D2) Modified Part Number Price Add to cart

unit:mm
Shaft Hole
D1D2		 keyway Key
b t Nominal Dimension
b×h
Basic Dimension Allowance
(JS9)		 Basic Dimension Allowance
6 7       2 ±0.0125 1.0 +0.1
0 		2×2
8 9 10     3 ±0.0125 1.4 3×3
11 12       4 ±0.0150 1.8 4×4
13 14 15 16 17 5 ±0.0150 2.3 5×5
18 19 20 22   6 ±0.0150 2.8 6×6
24 25 28 30   8 ±0.0180 3.3 +0.2
0 		8×7
32 35 36 38   10 ±0.0180 3.3 10×8
40 42 44     12 ±0.0215 3.3 12×8
45 48 50     14 ±0.0215 3.8 14×9

Structure

Set Screw Type

MSX MSX

MSX/MSX-C_CFlexible Couplings - Slit Type

Clamping Type

MSX-C MSX-C

MSX/MSX-C_CFlexible Couplings - Slit Type


Material/Finish

MSX
Main Body A7075
Anodized
Hex Socket Set Screw SCM435
Ferrosoferric Oxide Film (Black)
Hex Socket Head Cap Screw SCM435
Ferrosoferric Oxide Film (Black)

Characteristics

  • Recommended Applicable Motor
MSX
Servomotor ◎
Stepping Motor ◎
General-purpose Motor ●

◎: Excellent ○: Very good ●: Available

  • Property
MSX
Zero Backlash ◎
High Torque ○
High Torsional Stiffness ◎

◎: Excellent ○: Very good

  • This is a metal spring coupling with single-piece construction. A slit is inserted into a cylindrical material.
  • It has an extremely high torsional stiffness and low moment of inertia.
  • Extra super duralumin (A7075) featuring the highest strength among aluminum alloy is adopted.
  • A plate spring formed by a slit allows eccentricity, angular misalignment, and end-play to be accepted.

Application

Actuator / High precision XY stage / Index table

Selection

Selection Based on Shaft Diameter and Rated Torque

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

MSX/MSX-C_CFlexible Couplings - Slit Type

Selection Example

In case of selected parameters of shaft diameter of φ 15 and load torque of 2 N•m, the selected size is MSX-34or MSX-34C.

Selection Based on the Rated Output of the Servomotor

Rated Output
(W)		 Servomotor Specifications＊1 Selection Size
Diameter of Motor Shaft
(mm)		 Rated Torque
(N・m)		 Instantaneous Max. Torque
(N・m)		 MSX MSX-C
Set Screw Type Clamping Type
10 5 - 6 0.032 0.096 MSX-16 MSX-16C
20 5 - 6 0.064 0.19 MSX-16 MSX-16C
30 5 - 7 0.096 0.29 MSX-19 MSX-19C
50 6 - 8 0.16 0.48 MSX-19 MSX-19C
100 8 0.32 0.95 MSX-19 MSX-19C
200 9 - 14 0.64 1.9 MSX-29 MSX-34C
400 14 1.3 3.8 MSX-39 MSX-39C
750 16 - 19 2.4 7.2 MSX-44 MSX-44C

＊1：　Motor specifications are based on general values. For details, see the motor manufacturer's catalogs. This is the size for cases where devices such as reduction gears are not used.


Eccentric Reaction Force

MSX/MSX-C_TTechnical Information


Thrust reaction force

MSX/MSX-C_TTechnical Information


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 MSX in torsional stiffness due to temperature is small and the change in responsiveness is extremely small. If the unit is used under higher temperature, be careful about misalignment due to elongation or deflection of the shaft associated with thermal expansion.

MSX/MSX-C_TTechnical Information


Static torsional stiffness comparison (slit-type)

MSX have high static torsional stiffness and responsiveness. Optimal for high-speed and precision positioning for servomotors, etc.

MSX/MSX-C_TTechnical Information


Related Products

The slit-type coupling MSXP in PEEK material can be used in an environment or cleanroom where heat and chemical resistance are required, such as FPD and semiconductor equipment.

MSX/MSX-C_CFlexible Couplings - Slit Type


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Product List

XGT2

XGT2

Flexible Couplings - High-gain Rubber Type - Standard Type

MJC-BL

MJC-BL

Flexible Coupling - Jaw-Type - Set Screw Type

MST

MST

Flexible Couplings - Slit Type - Set Screw Type

MBB-C

MBB-C

Bellows-Type Flexible Coupling

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resources_Coupling_XG

High-Gain Rubber Type Coupling XG2

This suppresses servo motor hunting and greatly shortens settling time. New NBK coupling XG2. Exhibits even higher responsivity than metal disk couplings. Contributes to improving productivity, such as suppressing speed unevenness during stepper motor operation.

About Shaft Couplings

This page introduces flanged shaft couplings. It provides a clear introduction to the features and structure of flexible shaft couplings, fixed shaft couplings and rubber shaft couplings.

Choosing the most suitable coupling

We also explain the basic points for selection of the "perfect couplings" to meet customer needs. If you have struggled with selecting the perfect coupling from the many available, this is a must-see.

About Couplings

Coupling is a component used to connect a drive shaft and a driven part, for example, a motor shaft and a ball screw for the purpose of transmitting the torque.