MDW
Flexible Coupling – Disk Type
Dimension Drawing
Dimensions/Specifications/CAD
| Part Number | A | L | W | E | F | G | M | Wrench Torque (N･m) |
|---|---|---|---|---|---|---|---|---|
| MDW-19C | 19 | 8 | 27 | 8.5 | 2.5 | 6.5 | M2 | 0.5 |
| MDW-25C | 25 | 10 | 31 | 12.5 | 3.5 | 9 | M2.5 | 1 |
| MDW-32C | 32 | 12 | 40 | 16 | 4 | 11 | M3 | 1.5 |
| MDW-40C | 40 | 14 | 44 | 21 | 5 | 15 | M4 | 2.5 |
| MDW-50C | 50 | 18 | 57 | 26 | 6 | 18 | M5 | 7 |
| MDW-63C | 63 | 20 | 61 | 35 | 7 | 24 | M6 | 12 |
| 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) |
|---|---|---|---|---|---|---|---|---|---|
| MDW-19C | 8 | 0.7 | 1.5 | 33000 | 200 | 0.12 | 1.5 | ±0.5 | 18 |
| MDW-25C | 12 | 1 | 2 | 25000 | 450 | 0.12 | 1.5 | ±0.5 | 25 |
| MDW-32C | 15 | 2.5 | 5 | 19000 | 1100 | 0.15 | 1.5 | ±0.5 | 60 |
| MDW-40C | 20 | 3.5 | 7 | 15000 | 1400 | 0.15 | 1.5 | ±0.5 | 100 |
| MDW-50C | 25 | 9 | 18 | 12000 | 2200 | 0.15 | 1.5 | ±0.5 | 210 |
| MDW-63C | 30 | 12.5 | 25 | 10000 | 3000 | 0.15 | 1.5 | ±0.5 | 340 |
*Adjustment of rated and torque specifications for load fluctuations is not required.
For more detailed information, please refer to Selection Guidelines [PDF 171KB].
**Based on the shaft bores.
| Part Number | Stock Bores D1-D2 | |||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 4 | 5 | 6 | 6.35 | 7 | 8 | 9 | 10 | 11 | 12 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 22 | 24 | 25 | 28 | 30 | |
| MDW-19C | ● | ● | ● | – | ● | ● | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – |
| MDW-25C | – | – | ● | ● | – | ● | ● | ● | ● | ● | – | – | – | – | – | – | – | – | – | – | – | – |
| MDW-32C | – | – | – | – | – | ● | – | ● | ● | ● | ● | ● | – | – | – | – | – | – | – | – | – | – |
| MDW-40C | – | – | – | – | – | ● | – | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | – | – | – | – | – |
| MDW-50C | – | – | – | – | – | – | – | – | – | – | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | – | – |
| MDW-63C | – | – | – | – | – | – | – | – | – | – | – | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● |
●All products come with set screws.
●Recommended tolerance for 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
| MDW-C | |
|---|---|
| Hub | A2017 Alumite Treatment |
| Spacer | A2017 Alumite Treatment |
| Disk | SUS304 |
| Pin | SUS303 |
| Collar | SUS303 |
| Hex Socket Head Cap Screw | SCM435 Ferrosoferric oxide film |
Structure
Characteristics
- Applicable motors
MDW Servomotor ◎ Stepping motor ◎ General-purpose motor ◎ ◎：Excellent ○：Very good
- Property
MDW Zero Backlash ◎ Allowable Misalignment ○ ◎：Excellent ○：Very good
- This is a disk type flexible coupling.
- The stainless steel disk allows the eccentricity, and angular misalignment, and end-play.
Application
Actuator/XY stage
Static torsional stiffness comparison (disc-type)
