Detailed Product Description technique performance pedigreea.model:NJC-1b.electromotor power:5.5kw,7.5kw,11kw,15kw18.5KWc.beat up dia: big impeller 1200mm, small impeller 380mmd.import rotate speed:1450rpme.export rotate speed:72rpmf.working environment:-30°C-50°C