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1. Van der Graaf Extreme Duty Drum Motor Features All-Enclosed Design: (Pumps & Motors); ... an all-enclosed design. Bearings, electric motor and all gear reducer components are inside the drive drum (head pulley) working in an oil bath that ensures optimum lubrication and longevity that averages ...; Created on 26 July 2017
2. Van der Graaf Drum Motor: (Prime-Time Products); ... in loss of production. The motorized drum, by Van der Graaf, is designed to address all the above points of failure. The Van der Graaf extreme duty series drum motor for aggregate use features an all-enclosed ...; Created on 17 April 2017

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