MSX
Flexible coupling – Slit – type – Set screw type
Dimension Drawing
Dimensions/Specifications/CAD
| Part Number | A | L | W | F | M | Wrench Torque (N･m) |
|---|---|---|---|---|---|---|
| MSX-16 | 16 | 6 | 17.4 | 3 | M3 | 0.7 |
| MSX-19 | 19 | 6.8 | 20 | 3.4 | M3 | 0.7 |
| MSX-24 | 24 | 8.5 | 25 | 4.25 | M4 | 1.7 |
| MSX-29 | 29 | 10.2 | 30 | 5.1 | M4 | 1.7 |
| MSX-34 | 34 | 12 | 35 | 6 | M5 | 4 |
| MSX-39 | 39 | 13.5 | 40 | 6.75 | M5 | 4 |
| MSX-44 | 44 | 15.5 | 45 | 7.75 | M6 | 7 |
| Part Number | Max. Bore Diameter (mm) | Rated Torque* (N・m) | Max. Torque* (N・m) | Max. Rotational (min-1) | Static Torsional Stiffness (N・m/rad) | Max. Lateral Misalignment (mm) | Max. Angular Misalignment (°) | Max. Axial Misalignment (mm) | Mass** (g) |
|---|---|---|---|---|---|---|---|---|---|
| MSX-16 | 8 | 0.5 | 1 | 39000 | 200 | 0.05 | 0.5 | ±0.1 | 7 |
| MSX-19 | 10 | 1 | 2 | 33000 | 270 | 0.05 | 0.5 | ±0.1 | 10 |
| MSX-24 | 12 | 1.5 | 3 | 26000 | 790 | 0.05 | 0.5 | ±0.1 | 22 |
| MSX-29 | 14 | 2 | 4 | 21000 | 1400 | 0.05 | 0.5 | ±0.1 | 40 |
| MSX-34 | 18 | 3 | 6 | 18000 | 2200 | 0.05 | 0.5 | ±0.1 | 64 |
| MSX-39 | 20 | 6 | 12 | 16000 | 4100 | 0.05 | 0.5 | ±0.1 | 90 |
| MSX-44 | 22 | 9 | 18 | 14000 | 5100 | 0.05 | 0.5 | ±0.1 | 133 |
*Adjustment of rated and max. torque specifications for load fluctuations is not required.
For more detailed information, please refer to Selection Guidelines [PDF 171KB].
**Based on the max. shaft bores.
| Part Number | Stock Bores 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 come with set screws (MSX).
●Tolerance on shaft bores of set screw type coupling is H8.
●Recommended tolerance on shaft diameters is h6 and h7.
●Bore and keyway modifications are available on request. Please take advantage of our bore modification services.
For more information please refer to Custom Bore Modifications [PDF 495KB].
Material/Finish
| MSX/MSX-C | |
|---|---|
| Main Body | A7075 Alumite Treatment |
| Hex Socket Set Screw | SCM435 Ferrosoferric oxide film |
| Hex Socket Head Cap Screw | SCM435 Ferrosoferric oxide film |
Structure
Set Screw type
Clamping type
Characteristics
- Applicable motors
MSX Servomotor ◎ Stepping motor ◎ General-purpose motor ◎ ◎: Excellent ○: Very good
- 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
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 φ 15 and load torque of 2 N•m, the selection size is MSX-34 or MSX-34C.
| Rated output （W） | Servomotor Specifications＊ | ||||
|---|---|---|---|---|---|
| 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 |
＊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.
Thrust Reaction Force
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%.
MSX’s change in torsional stiffness due to temperature is small and the change in responsiveness is extremely small. However, if the unit is used under higher temperature, be careful about misalignment due to elongation or deflection of the shaft associated with thermal expansion.
Static torsional stiffness comparison (slit-type)
MSX have high torsional stiffness and responsiveness.
Optimal for high-speed and precision positioning for servomotors, etc.
Eccentric Reaction Force
