由南京市机械研究所按引进日本小松技术研制的履带式工程机械用终传动浮动油封环和由河北省望都轴瓦厂研制的双金属轴瓦等两项新产品最近在南京通过部级鉴定。该西项产品吸收了国外先进技术,经过几年技术攻关,严格进行了台架试验和长期寿命考核,证明在国内居领先地位,具有明显的经济效益和社会效益。 Two new products, the final drive floating oil seal ring for track-type construction machinery and the bi-metal bearing bush developed by the Wangdu Bearing Factory in Hebei Province, were developed by the Nanjing Institute of Machinery and passed the ministry’s approval in Nanjing recently. The Western products have absorbed foreign advanced technologies. After several years of technological breakthroughs, they have strictly carried out bench tests and long-term life assessments, which proves to be in the leading position in the country and have obvious economic and social benefits.