Curved Jaw Type Flexible Coupling
| Servomotor | B |
|---|---|
| Stepping Motor | A |
| General-purpose Motor | A |
| Encoder | - |
| Zero Backlash | B |
|---|---|
| High Torsional Stiffness | - |
| High Torque | A |
| Absorption of Misalignment | B |
| Vibration Absorption | B |
| Electrical Insulation | A |
| Corrosion Resistant (All Stainless Steel) | - |
A : Excellent B : Very Good
*Stock screws can be replaced with stainless steel screws. Please take advantage of our stainless steel screw option.
For more information please refer to Stainless Steel Screws [PDF 256KB].
| Catalog Number |
A | L | W | B | C | F | M | Wrench Torque (N·m) |
 |
 |
|---|---|---|---|---|---|---|---|---|---|---|
| MJT-30K-BL | 30 | 11 | 35 | 10 | 1.5 | 5.5 | M4 | 1.7 | MJT30K.dxf | MJT30K |
| MJT-40K-BL | 40 | 25 | 66 | 12 | 2 | 12.5 | M5 | 4 | MJT40K.dxf | MJT40K |
| MJT-55K-BL | 55 | 30 | 78 | 14 | 2 | 15 | M6 | 7 | MJT55K.dxf | MJT55K |
| MJT-65K-BL | 65 | 35 | 90 | 15 | 2.5 | 17.5 | M8 | 15 | MJT65K.dxf | MJT65K |
| MJT-80K-BL | 80 | 45 | 114 | 18 | 3 | 22.5 | M8 | 15 | ||
| MJT-95K-BL | 95 | 50 | 126 | 20 | 3 | 25 | M8 | 15 | ||
| MJT-30K-WH | 30 | 11 | 35 | 10 | 1.5 | 5.5 | M4 | 1.7 | MJT30K.dxf | MJT30K |
| MJT-40K-WH | 40 | 25 | 66 | 12 | 2 | 12.5 | M5 | 4 | MJT40K.dxf | MJT40K |
| MJT-55K-WH | 55 | 30 | 78 | 14 | 2 | 15 | M6 | 7 | MJT55K.dxf | MJT55K |
| MJT-65K-WH | 65 | 35 | 90 | 15 | 2.5 | 17.5 | M8 | 15 | MJT65K.dxf | MJT65K |
| MJT-80K-WH | 80 | 45 | 114 | 18 | 3 | 22.5 | M8 | 15 | ||
| MJT-95K-WH | 95 | 50 | 126 | 20 | 3 | 25 | M8 | 15 | ||
| MJT-30K-RD | 30 | 11 | 35 | 10 | 1.5 | 5.5 | M4 | 1.7 | MJT30K.dxf | MJT30K |
| MJT-40K-RD | 40 | 25 | 66 | 12 | 2 | 12.5 | M5 | 4 | MJT40K.dxf | MJT40K |
| MJT-55K-RD | 55 | 30 | 78 | 14 | 2 | 15 | M6 | 7 | MJT55K.dxf | MJT55K |
| MJT-65K-RD | 65 | 35 | 90 | 15 | 2.5 | 17.5 | M8 | 15 | MJT65K.dxf | MJT65K |
| MJT-80K-RD | 80 | 45 | 114 | 18 | 3 | 22.5 | M8 | 15 | ||
| MJT-95K-RD | 95 | 50 | 126 | 20 | 3 | 25 | M8 | 15 |
| Stock Bores Diameters D |
Keyways | Keys | |||
|---|---|---|---|---|---|
| b | t | b×h | |||
| Basic Size |
Tolerance (JS9) |
Basic Size |
Tolerance | ||
| 10・11・12 | 4 | ±0.0150 | 1.8 | +0.1 0 |
4×4 |
| 14・15・16 | 5 | 2.3 | 5×5 | ||
| 18・19・20 | 6 | 2.8 | 6×6 | ||
| 25・28・30 | 8 | ±0.0180 | 3.3 | +0.2 0 |
8×7 |
| 32・35・38 | 10 | 10×8 | |||
| 40・42 | 12 | ±0.0215 | 12×8 | ||
| 45 | 14 | 3.8 | 14×9 | ||
| Catalog Number |
Max. Bore (mm) |
Rated Torque* (N·m) |
Max. Torque* (N·m) |
Max. Rotational Frequency (min-1) |
Moment of Inertia** (kg·m2) |
Static Torsional Stiffness (N·m/rad) |
Errors of Eccentricity (mm) |
Errors of Angularity (°) |
Errors of Shaft End-Play (mm) |
Mass** (g) |
|---|---|---|---|---|---|---|---|---|---|---|
| MJT-30K-BL | 14 | 4 | 8 | 21000 | 5.8x10-6 | 46 | 0.2 | 1 | 0~+1.0 | 45 |
| MJT-40K-BL | 20 | 4.9 | 9.8 | 15000 | 3.8x10-5 | 380 | 0.15 | 1 | 0~+1.2 | 150 |
| MJT-55K-BL | 25 | 17 | 34 | 11000 | 1.6x10-4 | 1400 | 0.2 | 1 | 0~+1.4 | 350 |
| MJT-65K-BL | 30 | 46 | 92 | 9000 | 3.6x10-4 | 2800 | 0.2 | 1 | 0~+1.5 | 570 |
| MJT-80K-BL | 45 | 95 | 190 | 7000 | 9.8x10-4 | 3200 | 0.2 | 1 | 0~+1.8 | 1200 |
| MJT-95K-BL | 50 | 130 | 260 | 6000 | 2.2x10-3 | 3600 | 0.2 | 1 | 0~+2.0 | 1800 |
| MJT-30K-WH | 14 | 7.5 | 15 | 21000 | 5.8x10-6 | 73 | 0.15 | 1 | 0~+1.0 | 45 |
| MJT-40K-WH | 20 | 10 | 20 | 15000 | 3.8x10-5 | 570 | 0.1 | 1 | 0~+1.2 | 150 |
| MJT-55K-WH | 25 | 35 | 70 | 11000 | 1.6x10-4 | 1600 | 0.15 | 1 | 0~+1.4 | 350 |
| MJT-65K-WH | 30 | 95 | 190 | 9000 | 3.6x10-4 | 3000 | 0.15 | 1 | 0~+1.5 | 570 |
| MJT-80K-WH | 45 | 190 | 380 | 7000 | 9.8x10-4 | 5300 | 0.15 | 1 | 0~+1.8 | 1200 |
| MJT-95K-WH | 50 | 265 | 530 | 6000 | 2.2x10-3 | 6200 | 0.15 | 1 | 0~+2.0 | 1800 |
| MJT-30K-RD | 14 | 12.5 | 25 | 21000 | 5.8x10-6 | 130 | 0.1 | 1 | 0~+1.0 | 45 |
| MJT-40K-RD | 20 | 17 | 34 | 15000 | 3.8x10-5 | 1200 | 0.1 | 1 | 0~+1.2 | 150 |
| MJT-55K-RD | 25 | 60 | 120 | 11000 | 1.6x10-4 | 2600 | 0.1 | 1 | 0~+1.4 | 350 |
| MJT-65K-RD | 30 | 160 | 320 | 9000 | 3.6x10-4 | 4900 | 0.1 | 1 | 0~+1.5 | 570 |
| MJT-80K-RD | 45 | 325 | 650 | 7000 | 9.8x10-4 | 6500 | 0.1 | 1 | 0~+1.8 | 1200 |
| MJT-95K-RD | 50 | 450 | 900 | 6000 | 2.2x10-3 | 8900 | 0.1 | 1 | 0~+2.0 | 1800 |
*Adjustment of rated and maximum torque specifications for load fluctuations is not required.
However, if operating temperature exceeds 30℃, please adjust rated torque and maximum torque as detailed in the table below.
The operational temperature range for MJT is -20℃~60℃. For more detailed information, please refer to Selection Guidelines [PDF 171KB].
**Based on the maximum shaft bores.
| Air Temperature | -20℃~30℃ | 30℃~40℃ | 40℃~60℃ |
|---|---|---|---|
| Temperature Correction Factor | 1.00 | 0.80 | 0.70 |
| Catalog Number |
RoHS | Stock Bores D1·D2 |
|---|---|---|
| MJT-30K-BL | Compliant | |
| MJT-40K-BL | Compliant | |
| MJT-55K-BL | Compliant | |
| MJT-65K-BL | Compliant | |
| MJT-80K-BL | Compliant | |
| MJT-95K-BL | Compliant | |
| MJT-30K-WH | Compliant | |
| MJT-40K-WH | Compliant | |
| MJT-55K-WH | Compliant | |
| MJT-65K-WH | Compliant | |
| MJT-80K-WH | Compliant | |
| MJT-95K-WH | Compliant | |
| MJT-30K-RD | Compliant | |
| MJT-40K-RD | Compliant | |
| MJT-55K-RD | Compliant | |
| MJT-65K-RD | Compliant | |
| MJT-80K-RD | Compliant | |
| MJT-95K-RD | Compliant |
●All products come with setscrews.
●Recommended tolerance on shaft diameters is h6 and h7.
●Keyway type/clamp type and other combination couplings are available on request.
●Bore and keyway modifications are available on request. Please take advantage of our bore modification services.
For more information please refer to Custom Bore Modifications [PDF 495KB].