Dimension Drawing
Specs/CAD
| Part Number | A | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| MOC-12 | 12 | 12 | 3.9 | 14.4 | 5.2 | 1.9 | M3 | 0.7 | - | 21.15 | CAD | Cart | |
| MOC-17 | 15 | 16.5 | 4.4 | 16 | 8.2 | 2.2 | M3 | 0.7 | - | 22.53 | CAD | Cart | |
| MOC-23 | 20 | 22.5 | 5.8 | 21.6 | 12.2 | 2.9 | M4 | 1.7 | - | 28.71 | CAD | Cart | |
| MOC-28 | 26 | 27.5 | 7.3 | 25.6 | 14.2 | 3.7 | M4 | 1.7 | - | 30.36 | CAD | Cart | |
| MOC-33 | 30 | 32.5 | 10 | 32.6 | 15.2 | 5 | M4 | 1.7 | - | 36.69 | CAD | Cart | |
| MOC-41 | 38 | 41 | 12.1 | 40.1 | 18.3 | 6.1 | M5 | 4 | - | 69.73 | CAD | Cart |
| Part Number | Max. Bore Diameter (mm) |
Rated Torque (N・m)＊1 | |||||||
|---|---|---|---|---|---|---|---|---|---|
| MOC-12 | 5 | 1.2 | 2.1 | 3000 | 6.8×10-8 | 25 | 1 | 3 | 3 |
| MOC-17 | 8 | 1.8 | 3.6 | 3000 | 2.0×10-7 | 50 | 1 | 3 | 5 |
| MOC-23 | 12 | 4 | 8 | 3000 | 8.1×10-7 | 150 | 1.2 | 3 | 11 |
| MOC-28 | 14 | 8 | 14 | 3000 | 2.6×10-6 | 350 | 1.5 | 3 | 24 |
| MOC-33 | 16 | 16 | 25 | 3000 | 6.1×10-6 | 450 | 2 | 3 | 39 |
| MOC-41 | 20 | 30 | 46 | 3000 | 1.9×10-5 | 1100 | 2.5 | 3 | 77 |
＊1： 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 MOC is -20°C to 80°C.
＊2： These are values with max. bore diameter.
| Part Number | Standard Bore Diameter (Dimensional Allowance H8) D1 - D2 |
|||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 3 | 4 | 5 | 6 | 8 | 10 | 12 | 14 | 15 | 16 | 18 | 20 | |
| MOC-12 | ● | ● | ● | - | - | - | - | - | - | - | - | - |
| MOC-17 | - | ● | ● | ● | ● | - | - | - | - | - | - | - |
| MOC-23 | - | - | ● | ● | ● | ● | ● | - | - | - | - | - |
| MOC-28 | - | - | - | ● | ● | ● | ● | ● | - | - | - | - |
| MOC-33 | - | - | - | - | ● | ● | ● | ● | ● | ● | - | - |
| MOC-41 | - | - | - | - | - | ● | ● | ● | ● | ● | ● | ● |
● All products are provided with hex socket head cap screw.
● Recommended tolerance for shaft diameters is h6 and h7.
● A set of hubs with set screw type for one side and clamping type for the other side and others are available upon request. ⇒Mounting and Maintenance
● 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)
Ambient Temperature / Temperature Correction Factor
| Ambient Temperature | Temperature Correction Factor |
|---|---|
| -20°C to 30°C | 1.00 |
| 30°C to 40°C | 0.80 |
| 40°C to 60°C | 0.70 |
| 60°C to 80°C | 0.55 |
Material/Finish
| MOC | |
|---|---|
| Hub | A2017 Anodized＊1 |
| Spacer | Polyacetal with Recycled Carbon Fiber |
| Hex Socket Set Screw | SCM435 Ferrosoferric Oxide Film (Black) |
| Hex Socket Head Cap Screw | SCM435 Ferrosoferric Oxide Film (Black) |
＊1： With regard to bore surface treatment, process needs may result in a mixture of parts with and without surface treatment. This will not lead to any issues in terms of coupling performance.
Characteristics
- Applicable motors
| MOC | |
|---|---|
| Servomotor | ● |
| Stepping Motor | ● |
| General-purpose Motor | ◎ |
- Property
| MOC | |
|---|---|
| High Torque | ◎ |
| Allowable Misalignment | ◎ |
| Small Eccentric Reaction Force | ◎ |
| Allowable Operating Temperature | -20°C to 80°C |
- This is an oldham type flexible coupling.
- The spacer uses resin containing eco-friendly recycled carbon fiber. Higher-torque specifications than MOR.
- Slippage of hubs and a spacer allows large eccentricity and angular alignment to be accepted.
- The eccentric reaction generated by misalignment is small and the burden on the shaft is reduced.
- The simple structure allows the unit to be easily assembled.
- Compliant with the Japan Machine Accessory Association organizational standards (TES 1403).
Application
Sputtering device / Parts feeder / Industrial sewing machine / Amusement 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 0.4N•m, the selection size is MOC-23.Comparison of Rated Torque
Spacer's Projection Structure
Spacer's projection structure allows large angular to be effortlessly accepted. It reduces burden on the shaft.
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%.Changes in the static torsion spring constant within the operating temperature are shown in the graph.
Before using the unit, be aware of the deterioration of responsiveness.
