... intl_assessment 1,PRODUCT OVERVIEW1),YWF series axial fan motors are external rotor fan motors with the characteristics of compact structure, convenient ... 5m, and we can also provide connection box to fan motors for clients' choices.4),The applicable environment temperature of ... working life of motors is more than 30000 hours.2,TECHNICAL DATA 3,DIMENSIONS4,ACCESSORIES CHART 5,OUR COMPANY AND FACTORY6, ...