Dimension Drawing
*1: In a case where the bore diameter is φ 4 or less, the set screw is used in only one place.
Specs/CAD
| Part Number | Max. Bore Diameter (mm) |
Rated Torque＊1 (N・m) | |||||||
|---|---|---|---|---|---|---|---|---|---|
| MSF-16 | 8 | 0.5 | 1 | 39000 | 9.0×10-7 | 4.4 | 0.2 | 2 | 22 |
| MSF-20 | 10 | 1 | 2 | 31000 | 2.7×10-6 | 9.5 | 0.2 | 2 | 42 |
| MSF-25 | 12 | 1.5 | 3 | 25000 | 8.1×10-6 | 20 | 0.2 | 2 | 81 |
| MSF-32 | 15 | 3 | 6 | 19000 | 2.5×10-5 | 52 | 0.2 | 2 | 150 |
＊1： Correction of rated torque and max. torque due to load fluctuation is not required. However, if ambient temperature exceeds 30°C, be sure to correct the rated torque and max. torque with temperature correction factor shown in the following table. The allowable operating temperature of MSF is -20℃ to 60℃. For more detailed information, please refer to Achieving Better Drive.
＊2： These are values with max. bore diameter.
| Part Number | Standard Bore Diameter (Dimensional Allowance H8) D1･D2 |
||||||||
|---|---|---|---|---|---|---|---|---|---|
| 3 | 4 | 5 | 6 | 6.35 | 8 | 10 | 12 | 14 | |
| MSF-16 | ● | ● | ● | ● | ● | ● | - | - | - |
| MSF-20 | - | - | ● | ● | ● | ● | ● | - | - |
| MSF-25 | - | - | - | ● | ● | ● | ● | ● | - |
| MSF-32 | - | - | - | - | - | ● | ● | ● | ● |
● 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.
● For the shaft insertion amount to the coupling, see Mounting/maintenance. ⇒Mounting and Maintenance
Additional Modification Service
Modified Part Number
Enter the desired bore diameter and then click [Check Modified Part Number].
| Standard bore diameter(D1) | Standard bore diameter(D2) | Modified Part Number | Price | Add to cart |
|---|---|---|---|---|
|
mm
in.
|
mm
in.
|
Cart |
| Applicable Bore Diameter D1D2 |
keyway | Key | |||||||
|---|---|---|---|---|---|---|---|---|---|
| b | t | Nominal Dimension b×h |
|||||||
| Standard Dimension | Allowance (JS9) |
Standard Dimension | Allowance | ||||||
| 6 | 7 | 2 | ±0.0125 | 1.0 | +0.1 0 |
2×2 | |||
| 8 | 9 | 10 | 3 | ±0.0125 | 1.4 | 3×3 | |||
| 11 | 12 | 4 | ±0.0150 | 1.8 | 4×4 | ||||
| 13 | 14 | 15 | 16 | 17 | 5 | ±0.0150 | 2.3 | 5×5 | |
| 18 | 19 | 20 | 22 | 6 | ±0.0150 | 2.8 | 6×6 | ||
| 24 | 25 | 28 | 30 | 8 | ±0.0180 | 3.3 | +0.2 0 |
8×7 | |
| 32 | 35 | 36 | 38 | 10 | ±0.0180 | 3.3 | 10×8 | ||
| 40 | 42 | 44 | 12 | ±0.0215 | 3.3 | 12×8 | |||
| 45 | 48 | 50 | 14 | ±0.0215 | 3.8 | 14×9 | |||
| 55 | 16 | ±0.0215 | 4.3 | 16×10 | |||||
| Standard Inch Bore Diameter D1D2 |
Keyway | |||
|---|---|---|---|---|
| Wk | T | |||
| Standard Dimension | Allowance | Standard Dimension | Allowance | |
| 1/2 | 1/8 | +0.002 0 |
0.560 | +0.01 0 |
| 9/16 | 1/8 | +0.002 0 |
0.623 | +0.01 0 |
| 5/8 | 3/16 | +0.002 0 |
0.709 | +0.01 0 |
| 11/16 | 3/16 | +0.002 0 |
0.773 | +0.01 0 |
| 3/4 | 3/16 | +0.002 0 |
0.837 | +0.01 0 |
| 13/16 | 3/16 | +0.002 0 |
0.900 | +0.01 0 |
| 7/8 | 3/16 | +0.002 0 |
0.964 | +0.01 0 |
| 15/16 | 1/4 | +0.002 0 |
1.051 | +0.01 0 |
| 1 | 1/4 | +0.002 0 |
1.114 | +0.01 0 |
| 1-1/8 | 1/4 | +0.002 0 |
1.241 | +0.01 0 |
| 1-1/4 | 1/4 | +0.002 0 |
1.367 | +0.01 0 |
| 1-3/8 | 5/16 | +0.002 0 |
1.518 | +0.01 0 |
| 1-1/2 | 3/8 | +0.002 0 |
1.669 | +0.01 0 |
| 1-5/8 | 3/8 | +0.002 0 |
1.796 | +0.01 0 |
| 1-3/4 | 3/8 | +0.002 0 |
1.922 | +0.01 0 |
- Refer to the "Couplicon Bore Diameter Additional Modification Service" for more information.
- BT： Additional modification of bore
- KT： Metric Keyway Modification (JIS Standard)
- KA： Inch Keyway Modification (AGMA Standard)
Material/Finish
| MSF-16-MSF-25 | MSF-32 | |
|---|---|---|
| Casing | ZDC2 Cathodic Electrodeposition Coating |
SMF4040 Steam Treatment |
| Sleeve | Polyurethane | Polyurethane |
| Hex Socket Set Screw | SCM435 Ferrosoferric Oxide Film (Black) |
SCM435 Ferrosoferric Oxide Film (Black) |
Structure
Set Screw Type
Characteristics
- Recommended Applicable Motor
| MSF | |
|---|---|
| Servomotor | ● |
| Stepping Motor | ● |
| General-purpose Motor | ◎ |
- Property
| MSF | |
|---|---|
| Allowable Misalignment | ○ |
| Vibration Absorption | ○ |
| Electrical Insulation | ◎ |
| Allowable Operating Temperature | -20℃ to 60℃ |
- The engagement of serration transmits torque. This is a simple structure flexible coupling.
- Excellent flexibility. Its max. lateral misalignment and max. angular misalignment are large, absorbing torsional vibration.
Application
Mixer / Gaming deviceSelection
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 8 and load torque of 1.4 N•m, the selection size is MSF-25.Ambient Temperature / Temperature Correction Factor
| Ambient Temperature | Temperature Correction Factor |
|---|---|
| -20℃ to 30℃ | 1.00 |
| 30℃ to 40℃ | 0.80 |
| 40℃ to 60℃ | 0.70 |
