... .2mm, mirror face.4. Impeller, casting aluminum alloy impeller , diameter 300mm. 5. Bearing of impeller, permanently sealed bearing, size 633313.6 ... . Venture, internal diameter, 1290mm, galvanized board, thickness 1.0mm.7. Blade tip ... , A type belt,11. V-belt pulley , motor side, diameter 95 mm , shaft hole size 14mm , material, casting aluminum ...