Rotalink - AC Motors and Optional Gearboxes

Selection Guide

Synchronous motors are often used in applications where precise speed is critical to the application. Shaded pole (asynchronous) motors offer higher levels of output power than synchronous motors however speed will vary under load.

The most important step lies in the accurate definition of the work that you require the motor and gearbox to perform. The selection of a suitable motor and gearbox can only be made if the torque and speed can be defined. Of these two parameters, torque is probably the most difficult to identify - please contact us if you need help.

1. First decide which type of motor you need. For guidance please look at the synchronous and shaded pole schedule.

2. Using the appropriate selection chart, click the intersection point of the required torque (Nm) and speed (rpm). The correct motor output power can be read from the resulting chart. Any gearbox above the clicked intersection will satisfy the torque requirement.

3. Using the motor schedule that appears, select a motor from the appropriate power at maximum efficiency and voltage range. Using the gearbox data sheets you can check if this ratio is available, if not select the closest to your requirement.