This document is a summary of Rotating （本文档是旋转的一个总结）.pdf

Phone: +61 (0) 402 731 563 Fax: +61 (8) 9457 8642 Email: info@ Website: If you want to learn more about best practice machinery maintenance, or world class mechanical equipment maintenance and installation practices, follow the link to our Online Store and see the Training presentations and Books there… /store/machinery-maintenance-and- inspection/store-machinery-maintenance.html This document is a summary of ... Rotating Machinery Rotor Balancing The aim of rotor balancing is to achieve satisfactory running when installed on site. It means no more than an acceptable magnitude of vibration is caused by the unbalance remaining in the rotor. In the case of a flexible rotor, it also means that not more than an acceptable magnitude of deflection occurs in the rotor at any speed up to the maximum service speed. Most rotors are balanced before machine assembly because afterwards, there may be only limited access to the rotor. ISO classifies rotor in accordance with their balancing requirements and establishes methods of assessment of residual unbalance. The ISO also shows how criteria for use in the balancing facility maybe derived from vibration limits specified for the assembled and installed machine or unbalance limits specified by the rotor. If such limits are not available, it may be derived from ISO 10876 and ISO 7919 in terms of vibration, and from ISO 1940-1 in terms of permissible residual balance. (See ISO 11342 for methods of balancing flexible rotor) ……………………………………………………………………………………………………… Causes of rotor unbalance Manufacturing - Causes Many causes are liste