
A roller, usually of cylindrical shape, which is supported on a frame and which, in turn, supports or guides a conveyor belt. Idlers are not powered but turn by contact with the moving belt.
Found on
http://www.coaleducation.org/glossary.htm

A roller, usually of cylindrical shape, which is supported on a frame and which, in turn, supports or guides a conveyor belt. Idlers are not powered but turn by contact with the moving belt.
Found on
http://www.rocksandminerals.com/glossary.htm
No exact match found.