再请教productive bushing是嘛东西啊? 风机资料中提到一个东西:productive bushing不知为何物。bushing 应该是轴衬,轴瓦。加一个productive不知为何意。请教大家,谢谢!!! 原文:When replacing the ring, ensure that the counter-motion surface of the ring (hub or productive bushing) is free of furrows. 该句出自操作手册关于Shaft seal一个章节。查看更多7个回答 . 5人已关注