Posted to News on 21st May 2009, 09:59
Magnetic drives provide non-contact power transmission
Misumi Europa is expanding its range of roller and conveyor components to include two designs of magnetic clutch. These enable non-contact, low-wear, magnetic power transmission to transport devices, for example, in clean room applications.
The TM magnetic drives (magnetic clutches) provide non-contact power transmission via a magnetic field. Conveyors in clean room applications, such as those used in transporting glass panes for flat screens, require transport devices that create as little dust as possible. Thanks to the TM magnetic drive, the components do not come into contact, which eliminates one potential source of wear and contamination. The drives are also characterised by extremely quiet operation.
TM magnetic drives are suitable for semi-permanent use within the permissible scope of application on the basis of the permanent magnetic specification. This makes it possible to construct power-limited conveyor devices that can be operated continuously without causing damage to the conveyor device or the conveyed goods.
There are two designs available according to the direction of power transmission: a 90-degree variant transfers the power via two TM magnetic drives arranged at right angles to each other, while the parallel variant features two drives located parallel to each other and functioning in opposing directions. The number of magnetic clutches required for the application is calculated from the torque to be transmitted, which depends on the workpieces. The number of components, the size of the clutch and the relevant torque are therefore interdependent. Subsequently, users are able to select the appropriate component from the table in Misumi's catalogue.
