Dimension Drawing
Specs/CAD
| Part Number | A | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| MRG-16C | 16 | 7.5 | 16 | 3.75 | 5 | M2.5 | 1 | 25.96 | CAD | Cart | ||
| MRG-20C | 20 | 9.5 | 20 | 4.75 | 6.5 | M2.5 | 1 | 28.17 | CAD | Cart | ||
| MRG-25C | 25 | 12 | 25 | 6 | 9 | M3 | 1.5 | 32.15 | CAD | Cart | ||
| MRG-32C | 32 | 15.5 | 32 | 7.75 | 11 | M4 | 2.5 | 40.44 | CAD | Cart | ||
| MRG-40C | 40 | 19.5 | 40 | 9.5 | 14 | M5 | 4 | 57.90 | CAD | Cart | ||
| MRG-50C | 50 | 24.25 | 50 | 12 | 18 | M6 | 8 | 94.92 | CAD | Cart | ||
| MRG-65C | 65 | 31.5 | 65 | 16 | 23 | M8 | 16 | 178.22 | CAD | Cart |
| Part Number | Max. Bore Diameter (mm) |
Rated Torque＊1 (N・m) | |||
|---|---|---|---|---|---|
| MRG-16C | 6 | 1 | 39000 | 3.0×10-7 | 8.3 |
| MRG-20C | 8 | 2.5 | 31000 | 8.7×10-7 | 15 |
| MRG-25C | 10 | 4.5 | 25000 | 2.7×10-6 | 29 |
| MRG-32C | 14 | 10 | 19000 | 7.1×10-6 | 51 |
| MRG-40C | 18 | 20 | 15000 | 2.4×10-5 | 104 |
| MRG-50C | 24 | 25 | 12000 | 7.5×10-5 | 197 |
| MRG-65C | 30 | 35 | 9000 | 2.8×10-4 | 446 |
＊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 D1･D2 | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 5 | 6 | 8 | 10 | 12 | 14 | 15 | 16 | 18 | 19 | 20 | 25 | 28 | 30 | |
| MRG-16C | ● | ● | - | - | - | - | - | - | - | - | - | - | - | - |
| MRG-20C | - | ● | ● | - | - | - | - | - | - | - | - | - | - | - |
| MRG-25C | - | - | ● | ● | - | - | - | - | - | - | - | - | - | - |
| MRG-32C | - | - | - | ● | ● | ● | - | - | - | - | - | - | - | - |
| MRG-40C | - | - | - | - | - | - | ● | ● | ● | - | - | - | - | - |
| MRG-50C | - | - | - | - | - | - | - | - | - | ● | ● | - | - | - |
| MRG-65C | - | - | - | - | - | - | - | - | - | - | - | ● | ● | ● |
● 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-C | |
|---|---|
| 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 equipmentPrecautions for Use
In case of mounting on D-cut shaft, be careful about the position of the D-cut surface of the shaft. ⇒Mounting and MaintenanceThere are sizes where the hex socket head bolt exceeds the outer diameter of the coupling and the rotating diameter is larger than the outer diameter. Please be careful of the interference of coupling. Rotation Diameter
Selection
Selection Based on Shaft Diameter and Rated Torque
The area bounded by the shaft diameter and rated torque indicates the selection size.
