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This product is the internal driving device for the supportive use of various fixed belt conveyor; compared with external driving device, it carries the characteristics of compact structure, small spatial area, convenient use an maintenance, safe and reliable operation and better leakproofness. It is suitable for the humid and muddy workplace with high dust concentration to meet the requirements such as reverse stop and encapsulation.

As the substitution of extensively applied dynamo—reducer shaped external driving device, it can be used to constitute belt conveyor that not only transports materials in bulk such as coal, mineral, sand, cement and flour, but also conveys articles such as gunny bag and equipment with less energy consumption and easier centralized control.