MSX

Specs/CAD

mm inch

Part Number	Max. Bore Diameter (mm)	Rated Torque＊1 (N・m)Rated Torque＊1 (lbf in.)	Max. Rotational Frequency (min-1)	Moment of Inertia (kg・m2)＊2Moment of Inertia (oz. in.2)＊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.)	Mass (g) ＊2Mass (oz) ＊2
MSX-16	8	0.54.43	39000	2.8×10-70.015	20030.89	0.050.002	0.5	±0.1±0.004	70.25
MSX-19	10	18.85	33000	6.2×10-70.034	27041.7	0.050.002	0.5	±0.1±0.004	100.35
MSX-24	12	1.513.27	26000	2.0×10-60.109	790122.02	0.050.002	0.5	±0.1±0.004	220.78
MSX-29	14	217.7	21000	5.2×10-60.284	1400216.24	0.050.002	0.5	±0.1±0.004	401.41
MSX-34	18	326.55	18000	1.1×10-50.601	2200339.81	0.050.002	0.5	±0.1±0.004	642.26
MSX-39	20	653.1	16000	2.9×10-51.586	4100633.29	0.050.002	0.5	±0.1±0.004	903.17
MSX-44	22	979.65	14000	5.5×10-53.007	5100787.75	0.050.002	0.5	±0.1±0.004	1334.69

＊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.

Structure

Set Screw Type

MSX MSX

Clamping Type

MSX-C MSX-C

Material/Finish

Characteristics

• Recommended Applicable Motor

• Property

• 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.

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

Eccentric Reaction Force

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%.
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.

Static torsional stiffness comparison (slit-type)

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

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.