Specs/CAD
Part Number | Max. Bore Diameter (mm) |
Rated Torque*1 (N・m) | |||||||
---|---|---|---|---|---|---|---|---|---|
MBB-19C | 8 | 1.5 | 33000 | 8.6×10-7 | 170 | 0.15 | 1.5 | ±0.5 | 16 |
MBB-27C | 14 | 2.3 | 23000 | 3.6×10-6 | 800 | 0.15 | 1.5 | ±0.5 | 32 |
MBB-32C | 16 | 4.5 | 19000 | 1.1×10-5 | 1600 | 0.2 | 1.5 | ±0.7 | 68 |
MBB-40C | 24 | 10 | 15000 | 2.8×10-5 | 2700 | 0.2 | 1.5 | ±1 | 110 |
*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.
Unit : mm
Part Number | Standard Bore Diameter(mm) D1・D2 |
||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
3 | 4 | 5 | 6 | 8 | 10 | 12 | 14 | 15 | 16 | 17 | 19 | 20 | 22 | 24 | |
MBB-19C | ● | ● | ● | ● | ● | ||||||||||
MBB-27C | ● | ● | ● | ● | ● | ● | ● | ● | |||||||
MBB-32C | ● | ● | ● | ● | ● | ● | ● | ● | |||||||
MBB-40C | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● |
●For the shaft insertion amount to the coupling, see Mounting/maintenance. ⇒Mounting and Maintenance
Unit : inch
Part Number | Standard Bore Diameter D1・D2 |
|||||||
---|---|---|---|---|---|---|---|---|
1/8 | 3/16 | 1/4 | 3/8 | 1/2 | 5/8 | 3/4 | 7/8 | |
MBB-19C | ● | ● | ● | |||||
MBB-27C | ● | ● | ● | ● | ● | |||
MBB-32C | ● | ● | ● | ● | ||||
MBB-40C | ● | ● | ● | ● | ● | ● |
All products are provided with hex socket head cap screw.
Recommended tolerance for shaft diameters is h6 and h7.
Slip torque
Concerning the sizes shown in the table, please note that the shaft's slip torque is smaller than the rated torque of MBB-C.Unit : N・m
Part Number | Bore Diameter(mm) | ||
---|---|---|---|
3 | 5 | 6 | |
MBB-19C | 0.8 | ||
MBB-32C | 2 | 4.2 | |
MBB-40C | 9.8 |
These are test values based on the condition of shaft's dimensional allowance: h7, hardness: from 34-40 HRC, and screw tightening torque of the values described in MBB-C dimensional table.
Structure
Clamping Type
MBB-C Aluminum alloy hubMaterial/Finish
MBB | |
---|---|
Hub | A2017 Anodized |
Bellows | SUS304 |
Hex Socket Head Cap Screw |
SCM435 Ferrosoferric Oxide Film (Black) |
Characteristics
- Applicable motors
MBB | |
---|---|
Servomotor | ◎ |
Stepping Motor | ◎ |
General-purpose Motor | ● |
- Property
MBB | |
---|---|
Zero Backlash | ◎ |
Allowable Misalignment | ○ |
- This is a bellows type flexible coupling.
- The bellows allows eccentricity, angular misalignment, and end-play.
- The bellows is stainless steel.
Application
Actuator / High precision XY stage / Semiconductor devices / EncoderSelection
Selection Example
In case of selected parameters of shaft diameter of φ10 and load torque of 2 N・m, the selected size for MBB is MBB-27C.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 MBB 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.