The above product is a 100 Watts 600 RPM 12 volt AC 3 phase Permanent Magnet Alternator used in windmills, hydro and bio gas applications.It has a provision for Hand Cranking (handle) and used as a Demo dynamo in school and college labs.
The outer body is made of Aluminium so as to dissipate the heat generated during operation and thereby improve the efficiency of the PMA.
These alternators have a long life if properly maintained.
Imported Steel ball bearings are used to give a smooth run.