MWBS
Flexible coupling – Bellows – type (high precision welding)
Dimension Drawing
Dimensions/Specifications/CAD
| Part Number | A | L | W | F | M | Wrench Torque (N･m) |
|---|---|---|---|---|---|---|
| MWBS-13 | 13 | 6 | 16.5 | 3 | M2 | 0.5 |
| MWBS-18 | 18 | 8 | 22 | 4 | M2.5 | 1 |
| MWBS-22 | 22 | 10 | 27 | 5 | M3 | 1.5 |
| MWBS-28 | 28 | 14 | 37 | 7 | M4 | 2.5 |
| 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) |
|---|---|---|---|---|---|---|---|---|---|
| MWBS-13 | 6 | 0.07 | 0.15 | 10000 | 30 | 0.15 | 3.5 | 0.5 | 9.8 |
| MWBS-18 | 8 | 0.15 | 0.3 | 10000 | 40 | 0.15 | 5 | 0.5 | 25 |
| MWBS-22 | 10 | 0.35 | 0.7 | 10000 | 200 | 0.15 | 4 | 0.5 | 48 |
| MWBS-28 | 14 | 0.65 | 1.3 | 10000 | 900 | 0.15 | 4.5 | 0.5 | 110 |
*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 | |||||||
|---|---|---|---|---|---|---|---|---|
| 4 | 5 | 6 | 8 | 10 | 11 | 12 | 14 | |
| MWBS-13 | ● | ● | ● | – | – | – | – | – |
| MWBS-18 | – | ● | ● | ● | – | – | – | – |
| MWBS-22 | – | – | ● | ● | ● | – | – | – |
| MWBS-28 | – | – | – | ● | ● | ● | ● | ● |
●All products come with set screws.
●Recommended tolerance for shaft diameters is h6 and h7.
●Bore and keyway modifications are available on request. Please contact the customer service center for more information.
Material/Finish
| MWBS | |
|---|---|
| Hub | SUS304 |
| Bellows | SUS316L |
| Hex Socket Set Screw | SUSXM7 |
Structure
Set Screw type
Characteristics
- Property
MWBS Zero Backlash ◎ Allowable Misalignment ◎ Corrosion Resistance（All S.S.） ◎ ◎: Excellent ○: Very good
- This is a bellows-type flexible coupling.
- The crest and root of the bellows are bonded by special high precision welding.
- Thin metal plate molded with high precision allows higher misalignment to be accepted.
- Even if there is misalignment, the constant revolution is performed.
Application
Measurement equipment/Control device/Encoder
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 φ5 and load torque of 0.05 N・m, the selection size for MWBS is MWBS-13.
Technical Information
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%.
MWBS’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.
