GeoLocation
Hai Ha Ship Repair published a 10-point checklist for the final inspection after dynamic balancing. The list covers vibration readings, balance weights, alignment, foundation bolts, bearing temperature, trial running and machine labelling.
Hai Ha M&S said it balanced a fan blade assembly found to be severely unbalanced, using material removal and addition to bring it within the required tolerance. The yard said the work was carried out with a computerized dynamic balancing machine to reduce vibration and improve operating efficiency.
Hai Hà M&S said the performance and service life of a rewound motor depend heavily on heat management. The company pointed to slot fill density and vacuum pressure impregnation as the two main factors affecting cooling and insulation.