Single Disk Type Flexible Coupling

MDS

Merits

High Torque, High Torsional Stiffness and Response
Zero Backlash

Disk type flexible coupling
Compact coupling with short overall length
Double stainless steel disks absorb angular misalignment and shaft end-play
Parallel misalignment is not absorbed
Identical clockwise and counter-clockwise rotational characteristics
Finished products featuring two different end bore diameters available in stock

Application

Servomotor	A
Stepping Motor	A
General-purpose Motor	-
Encoder	-

Features

Zero Backlash	A
High Torsional Stiffness	A
High Torque	A
Absorption of Misalignment	-
Vibration Absorption	-
Electrical Insulation	-
Corrosion Resistant (All Stainless Steel)	-

A : Excellent B : Very Good

For the ultimate high torque, high torsional stiffness, high response performance, take a look at the flexible disk coupling XBWS.
Thrust Reaction Force / Changes in Static Torsional Stiffness Caused by Temperature / Static Torsional Stiffness Comparisons [PDF 257KB]

Configuration & Material

*Stock screws can be replaced with stainless steel screws. Please take advantage of our stainless steel screw option.
For more information please refer to Stainless Steel Screws [PDF 256KB].

Dimensions

unit:mm
Catalog Number	A	L	W	F	G	M	Wrench Torque (N·m)
MDS-19C	19	8	20	2.5	6.5	M2	0.5	MDS19C.dxf	MDS19C
MDS-25C	25	10	24	3.5	9	M2.5	1	MDS25C.dxf	MDS25C
MDS-32C	32	12	29	4	11	M3	1.5	MDS32C.dxf	MDS32C
MDS-40C	40	14	33	5	15	M4	2.5	MDS40C.dxf	MDS40C
MDS-50C	50	18	42	6	18	M5	7	MDS50C.dxf	MDS50C
MDS-63C	63	20	46	7	24	M6	12	MDS63C.dxf	MDS63C

Specifications

Catalog Number	Max. Bore (mm)	Rated Torque (N·m)	Max. Torque (N·m)	Max. Rotational Frequency (min^-1)	Moment of Inertia^* (kg·m²)	Static Torsional Stiffness (N·m/rad)	Errors of Angularity (°)	Errors of Shaft End-Play (mm)	Mass^* (g)
MDS-19C	8	0.7	1.5	33000	6.3x10^-7	280	0.7	±0.2	9
MDS-25C	12	1	2	25000	2.1x10^-6	630	0.7	±0.2	19
MDS-32C	15	2.5	5	19000	7.2x10^-6	1600	0.7	±0.2	41
MDS-40C	20	3.5	7	15000	1.3x10^-5	2600	0.7	±0.2	68
MDS-50C	25	9	18	12000	6.1x10^-5	3100	0.7	±0.2	140
MDS-63C	30	12.5	25	10000	1.7x10^-4	4200	0.7	±0.2	250

*Adjustment of rated and maximum torque specifications for load fluctuations is not required.
For more detailed information, please refer to Selection Guidelines [PDF 171KB].
**Based on the maximum shaft bores.

Stock Bores

Catalog Number	RoHS	Stock Bores D₁·D₂
MDS-19C	Compliant
MDS-25C	Compliant
MDS-32C	Compliant
MDS-40C	Compliant
MDS-50C	Compliant
MDS-63C	Compliant

●All products come with cap screws.
●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].