Drive and gear unit selection data
Determining application data
First, you require the data of the machine to be driven (mass, rotational speed, setting range, etc.) to select the correct drive. This data helps determine the required power, torque and speed. Refer to the documentation "Drive engineering – practical implementation – project planning for controlled and non-controlled drives" or the "SEW-Workbench" project planning software.
Selecting the correct drive
Calculate the power, rotational speed, torque, and overhung load of the drive. Observe all mechanical requirements. The suitable drive can then be determined.
Motors with adapter
As the motor dimensions are not standardized, the following motor data must be known to select the appropriate adapter:
- Shaft diameter and length
- Flange dimensions (edge length, diameter, centering shoulder, and hole circle)
- Maximum torque
Contact SEW‑EURODRIVE if you have any questions on selection and project planning.
Application data required for project planning:
Formula symbol
| Unit | Description |
|---|---|---|
FA_a | N | Axial force (tension and pressure) on the output shaft |
fline | Hz | Line frequency |
FR_a | N | Overhung load acting on the output shaft |
h | m above sea level | Installation altitude |
JL | 10-4 kgm2 | Mass moment of inertia to be driven |
Ma at namax | Nm | Output torque at maximum output speed |
Ma at namin | Nm | Output torque at minimum output speed |
MB | Nm | Braking torque |
namax | min-1 | Maximum output speed |
namin | min-1 | Minimum output speed |
Pa at namax | kW | Output power at maximum output speed |
Pa at namin | kW | Output power at minimum output speed |
M1 – M6 R, F, K, S, W | – | Required gear unit type and mounting position |
S.., ..% cdf | – | Duty type and cyclic duration factor cdf – the exact load cycle can be entered instead |
Tamb | °C | Ambient temperature |
VN | V | Nominal brake voltage |
VMot | V | Motor voltage |
Z | h-1 | Switching frequency – alternatively, the exact load cycle can be specified |
For inverter operation: required control mode and setting range. | ||
