Technical Data Coupling Sizing and procedure
To view selection procedures and precautions, please proceed to the following.
Click here to narrow down the product series or to make a tentative selection.
If you have specific conditions of use and wish to make a detailed selection, please click here.
Power Rigid Couplings EPR Series Selection
Taper-Lock tightening torques and transmitted torques
| Model No. | EPR50 | EPR58 | EPR68 | EPR78 | |||||
|---|---|---|---|---|---|---|---|---|---|
| Pressure bolt | M6 | M6 | M6 | M6 | |||||
| Tightening torque N・m{kgf・m} |
16.7{1.7} | 16.7{1.7} | 16.7{1.7} | 16.7{1.7} | |||||
| Shaft Bore Diameter | 16 | 90{9.2} | - | - | - | ||||
| 17 | 98{10.0} | - | - | - | |||||
| 18 | 106{10.8} | 78 {8.0} | - | - | |||||
| 19 | 115{11.7} | 94{9.6} | - | - | |||||
| 20 | 123{12.5} | 110{11.2} | - | - | |||||
| 22 | 139{14.2} | 141{14.4} | 144{14.7} | - | |||||
| 24 | - | 172{17.6} | 191{19.5} | - | |||||
| 25 | - | 188{19.2} | 216{22.0} | - | |||||
| 28 | - | - | 287{29.3} | - | |||||
| 30 | - | - | 334{34.1} | 176{18.0} | |||||
| 32 | - | - | 382{39.0} | 212{21.6} | |||||
| 35 | - | - | 454{46.3} | 264{26.9} | |||||
| 36 | - | - | - | 281{28.7} | |||||
| 38 | - | - | - | 316{32.2} | |||||
| 40 | - | - | - | 351{35.8} | |||||
| 42 | - | - | - | 385{39.3} | |||||
| 45 | - | - | - | 437{44.6} | |||||
| 48 | - | - | - | 489{49.9} | |||||
※Values in bold are standard bore diameters. See here for the bore diameter combinations.
Selection
Torque Capacity
Calculate the maximum torque (Tmax) by multiplying the maximum torque of the servomotor in use (T’max) by the service factor for the load created by motor start/stop.
Check the calculated value against the Taper-Lock transmitted torque.
- Tmax = T'max × Service factor (SF)
- Tmax：Maximum torque applied to coupling N・m{kgf・m}
- T'max：Servomotor’s maximum torque N・m{kgf・m}
| Load type | Uniform load | Moderately variable load | Highly variable load |
|---|---|---|---|
| Service factor (SF) | 1.2 | 1.4 | 1.5 |
Mounting Examples
