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) | |||
|---|---|---|---|---|---|
| MRG-16 | 8 | 1 | 39000 | 4.4×10-7 | 11 |
| MRG-20 | 10 | 2.5 | 31000 | 1.3×10-6 | 20 |
| MRG-25 | 12 | 4.5 | 25000 | 3.9×10-6 | 39 |
| MRG-32 | 16 | 10 | 19000 | 1.2×10-5 | 71 |
| MRG-40 | 20 | 20 | 15000 | 2.8×10-5 | 114 |
| MRG-50 | 25 | 25 | 12000 | 8.4×10-5 | 215 |
| MRG-65 | 32 | 35 | 9000 | 2.9×10-4 | 450 |
＊1： Correction of rated torque due to load fluctuation is not required.
＊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 | 15 | 16 | 18 | 19 | 20 | 25 | 28 | 30 | 32 | |
| MRG-16 | ● | ● | ● | ● | - | - | - | - | - | - | - | - | - | - | - | - |
| MRG-20 | - | - | - | ● | ● | ● | - | - | - | - | - | - | - | - | - | - |
| MRG-25 | - | - | - | - | ● | ● | ● | - | - | - | - | - | - | - | - | - |
| MRG-32 | - | - | - | - | - | - | ● | ● | ● | - | - | - | - | - | - | - |
| MRG-40 | - | - | - | - | - | - | - | - | ● | ● | ● | ● | - | - | - | - |
| MRG-50 | - | - | - | - | - | - | - | - | - | - | ● | ● | ● | - | - | - |
| MRG-65 | - | - | - | - | - | - | - | - | - | - | - | - | - | ● | ● | ● |
● 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
| MRG | |
|---|---|
| Main Body | A2017 Anodized |
| Hex Socket Set Screw | SCM435 Ferrosoferric Oxide Film (Black) |
| Hex Socket Head Cap Screw | SCM435 Ferrosoferric Oxide Film (Black) |
Structure
Set Screw Type
MRG Aluminum alloyMRGMRGS
Clamping Type
MRG-C Aluminum alloyMRG-CMRGS-C
Split Type
MRG-W Aluminum alloyMRG-WMRGS-W
Characteristics
- Recommended Applicable Motor
| MRG | MRGS | |
|---|---|---|
| Servomotor | ◎ | ◎ |
| Stepping Motor | ◎ | ◎ |
| General-purpose Motor | ● | ● |
- Property
| MRG | MRGS | |
|---|---|---|
| Zero Backlash | ◎ | ◎ |
| High Torque | ◎ | ○ |
| High Torsional Stiffness | ◎ | ◎ |
| Corrosion Resistance (All S.S.) | - | ◎ |
- This is a rigid type coupling.
- Light weight and ultra small moment of inertia. High response. High response.
- There are two types of units made of aluminum alloy or all stainless steel.
- There are three attachment methods: set screw type, clamping type, and split type.
Application
High precision XY stage / Machine tool / Cleaning equipmentSelection
Selection Based on Shaft Diameter and Rated Torque
The area bounded by the shaft diameter and rated torque indicates the selection size.
